# Architectural Clusters > Every algorithm contract in this domain is listed with its position on the derivation loop, its intent and invariant, the flow it walks and its productions as a… Page: Ontology · Algorithms Canonical: https://banes-lab.com/ontology/algorithms#algorithms-domain-architectural-clusters Listed in [Ontology · Algorithms](https://banes-lab.com/api/pages/ontology/algorithms.md), after [Architecture relationships](https://banes-lab.com/ontology/algorithms/algorithms-domain-arch-relationships.md) and before [Architectural Rules](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-rules.md). Every algorithm contract in this domain is listed with its position on the derivation loop, its intent and invariant, the flow it walks and its productions as a grammar. Each record also shows what it composes and is composed by, which forces and principles it answers to, what grounds it and what it grounds, and an exemplar where the record carries one. The diagram shows what composes what inside the domain. Relations diagram What composes what inside this domain. ```mermaid flowchart LR n_structural_core["Structural Core"] n_correctness_core["Correctness Core"] n_evolution_principles["Evolution Principles"] n_resource_core["Resource Core"] n_execution_core["Execution Core"] n_computation_core["Computation Core"] n_security_core["Security Core"] n_performance_core["Performance Core"] n_contracts_core["Contracts Core"] n_causality_core["Causality Core"] n_declarative_core["Declarative Core"] n_extensibility_core["Extensibility Core"] n_observability["Observability"] n_enforcement_core["Enforcement Core"] n_atomic_boundary["Atomic Boundary"] n_human_factors["Human Factors"] n_domain_modeling["Domain Modeling"] n_design_patterns_core["Design Patterns Core"] n_state_pattern["State Pattern"] n_separation_of_concerns["Separation of Concerns"] n_concurrency_correctness["Concurrency Correctness"] n_capacity_planning["Capacity Planning"] ``` ### Structural Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Structural Core](https://banes-lab.com/records/layer/structural-core.md) - Meta record Details Intent The architectural rules that preserve structural integrity — a single authoritative source, no shortcuts, no fallbacks, no duplication, no orphaned artifacts. Invariant Structure stays sound only when every element has one authoritative home and no debt-incurring escape hatch exists. Flow ```text SingleSource → NoShortcut → NoFallback → NoOrphan ``` Composes none Composed by [Finite State Machine](https://banes-lab.com/records/algorithms/finite-state-machine.md), [Constraints Over Shortcuts](https://banes-lab.com/records/algorithms/no-shortcuts.md), [Forward Compatibility Over Backward Compatibility](https://banes-lab.com/records/algorithms/no-backward-compat.md), [Fail-Fast Over Fallback](https://banes-lab.com/records/algorithms/no-fallback.md), [Explicit Removal Over Deprecation](https://banes-lab.com/records/algorithms/no-deprecation.md), [Greenfield Over Legacy](https://banes-lab.com/records/algorithms/no-legacy.md), [Single-Path Determinism Over Dual-Path](https://banes-lab.com/records/algorithms/no-dual-path.md), [Compression Over Repetition](https://banes-lab.com/records/algorithms/no-uncompressed.md), [Semantic Addressing Over Location Addressing](https://banes-lab.com/records/algorithms/no-location.md), [Homoiconicity Over Separation](https://banes-lab.com/records/algorithms/no-separation.md), [Bounded Complexity Over Unlimited](https://banes-lab.com/records/algorithms/no-unlimited.md), [Rule As Code Over Convention](https://banes-lab.com/records/algorithms/no-convention-enforcement.md), [Injected Dependency Over Hidden](https://banes-lab.com/records/algorithms/no-hidden-dependency.md), [Convention Discovery Over Hardcoded Wiring](https://banes-lab.com/records/algorithms/no-hardcoded-wiring.md) Forces none Principle [Single Source of Truth](https://banes-lab.com/records/architecture/single-source-of-truth.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Correctness Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Correctness Core](https://banes-lab.com/records/layer/correctness-core.md) - Meta record Details Intent The rules ensuring behavioral correctness and validity — no silent failures, no hidden invalidity, feedback acted on, results observed. Invariant Correctness holds only when every failure is surfaced and every invalid state is unrepresentable. Flow ```text SurfaceFailure → RejectInvalid → ActOnFeedback ``` Composes none Composed by [Petri Nets](https://banes-lab.com/records/algorithms/petri-nets.md), [Enforced Feedback Over Ignored](https://banes-lab.com/records/algorithms/no-ignored-feedback.md), [Errors As Language Over Silent Errors](https://banes-lab.com/records/algorithms/no-silent.md), [Explicit Invalidity Over Hidden](https://banes-lab.com/records/algorithms/no-hidden-invalidity.md), [Computed Health Over Metric Health](https://banes-lab.com/records/algorithms/no-metrics.md), [Boundary Validation Over Unvalidated Input](https://banes-lab.com/records/algorithms/no-unvalidated-input.md), [Design By Contract Over Implicit Contract](https://banes-lab.com/records/algorithms/no-implicit-contract.md), [Schema-Validated Boundary Over Untyped](https://banes-lab.com/records/algorithms/no-untyped-boundary.md), [Injected Nondeterminism Over Hidden](https://banes-lab.com/records/algorithms/no-hidden-nondeterminism.md) Forces none Principle [Fail Fast](https://banes-lab.com/records/architecture/fail-fast.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Evolution Principles - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Evolution Principles](https://banes-lab.com/records/layer/evolution-principles.md) - Meta record Details Intent The rules governing how a system changes over time — no backward-compat cruft, no deprecation debt, no legacy retention, no 'for now'. Invariant The system evolves cleanly only by deleting the superseded rather than accreting compatibility layers. Flow ```text Supersede → Delete → NoLegacy ``` Composes none Composed by [Forward Compatibility Over Backward Compatibility](https://banes-lab.com/records/algorithms/no-backward-compat.md), [Explicit Removal Over Deprecation](https://banes-lab.com/records/algorithms/no-deprecation.md), [Greenfield Over Legacy](https://banes-lab.com/records/algorithms/no-legacy.md), [Now Over For-Now](https://banes-lab.com/records/algorithms/no-for-now.md), [Compression Over Repetition](https://banes-lab.com/records/algorithms/no-uncompressed.md), [Approved Evolution Over Unapproved](https://banes-lab.com/records/algorithms/no-unapproved.md), [Versioned Evolution Over Breaking Change](https://banes-lab.com/records/algorithms/no-breaking-change.md), [Pattern By Fit Over Speculative Pattern](https://banes-lab.com/records/algorithms/no-speculative-pattern.md) Forces none Principle [Evolutionary Architecture](https://banes-lab.com/records/architecture/evolutionary-architecture.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Resource Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Resource Core](https://banes-lab.com/records/layer/resource-core.md) - Meta record Details Intent The rules governing resource lifecycle and ownership — bounded lifetime, single ownership, no leaks, no implicit retention. Invariant Every resource has one owner and a bounded lifetime; nothing is retained implicitly. Flow ```text Acquire → Own → Bound → Release ``` Composes none Composed by [Fail-Fast Over Fallback](https://banes-lab.com/records/algorithms/no-fallback.md), [Mandatory Over Optional](https://banes-lab.com/records/algorithms/no-optional.md), [Now Over For-Now](https://banes-lab.com/records/algorithms/no-for-now.md), [Single Owner Over Shared Ownership](https://banes-lab.com/records/algorithms/no-shared-ownership.md), [Bounded Lifetime Over Unbounded](https://banes-lab.com/records/algorithms/no-unbounded.md), [Enforced Symmetry Over Asymmetric Lifecycle](https://banes-lab.com/records/algorithms/no-asymmetric.md), [Explicit Retention Over Implicit](https://banes-lab.com/records/algorithms/no-implicit-retention.md), [Structural Release Over Discipline](https://banes-lab.com/records/algorithms/no-discipline-release.md), [Config Externalization Over Env Fallback](https://banes-lab.com/records/algorithms/no-env-fallback.md), [Atomic Boundary Over Partial Commit](https://banes-lab.com/records/algorithms/no-partial-commit.md) Forces none Principle [State Isolation](https://banes-lab.com/records/architecture/state-isolation.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Execution Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md) - Meta record Details Intent The rules governing execution flow — a single observable path, no deferring, no dual-path branching, nothing unobserved. Invariant Execution follows one observable path; nothing runs unobserved or deferred indefinitely. Flow ```text SinglePath → Observe → NoDefer ``` Composes none Composed by [Single-Path Determinism Over Dual-Path](https://banes-lab.com/records/algorithms/no-dual-path.md), [Immediacy Over Deferring](https://banes-lab.com/records/algorithms/no-deferring.md), [Observed Execution Over Unobserved](https://banes-lab.com/records/algorithms/no-unobserved.md), [Single Owner Over Shared Ownership](https://banes-lab.com/records/algorithms/no-shared-ownership.md), [Event Emission Over Parent Callbacks](https://banes-lab.com/records/algorithms/no-callbacks.md), [Monotonic Growth Over Retraction](https://banes-lab.com/records/algorithms/no-retraction.md), [Ordinal Time Over Timestamps](https://banes-lab.com/records/algorithms/no-timestamps.md), [Saga Compensation Over Distributed 2PC](https://banes-lab.com/records/algorithms/no-distributed-2pc.md), [Async Events Over Synchronous Cross-Boundary](https://banes-lab.com/records/algorithms/no-sync-cross-boundary.md), [Observable Signals Over Opaque Runtime](https://banes-lab.com/records/algorithms/no-opaque-runtime.md) Forces none Principle [Controlled Side Effects](https://banes-lab.com/records/architecture/controlled-side-effects.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Computation Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Computation Core](https://banes-lab.com/records/layer/computation-core.md) - Meta record Details Intent The rules governing computation determinism and purity — no mutable shared state, no hidden nondeterminism, reproducible results. Invariant A computation is reproducible only when it has no hidden mutable or nondeterministic input. Flow ```text Immutable → Deterministic → Reproducible ``` Composes none Composed by [Immutable Data Over Mutable State](https://banes-lab.com/records/algorithms/no-mutable.md), [Errors As Language Over Silent Errors](https://banes-lab.com/records/algorithms/no-silent.md), [Explicit Invalidity Over Hidden](https://banes-lab.com/records/algorithms/no-hidden-invalidity.md), [Injected Nondeterminism Over Hidden](https://banes-lab.com/records/algorithms/no-hidden-nondeterminism.md) Forces none Principle [Determinism](https://banes-lab.com/records/architecture/determinism.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Security Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Security Core](https://banes-lab.com/records/layer/security-core.md) - Meta record Details Intent The rules governing security posture — no hardcoded secrets, validated input, least privilege, no insecure fallbacks. Invariant The system is secure only when every input is validated and every privilege is least and explicit. Flow ```text ValidateInput → LeastPrivilege → NoSecretLeak ``` Composes none Composed by [Secret Store Over Hardcoded Secrets](https://banes-lab.com/records/algorithms/no-hardcoded-secrets.md), [Boundary Validation Over Unvalidated Input](https://banes-lab.com/records/algorithms/no-unvalidated-input.md), [Least Privilege Over Broad Privilege](https://banes-lab.com/records/algorithms/no-broad-privilege.md), [Config Externalization Over Env Fallback](https://banes-lab.com/records/algorithms/no-env-fallback.md) Forces none Principle [Security by Design](https://banes-lab.com/records/architecture/security-by-design.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Performance Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Performance Core](https://banes-lab.com/records/layer/performance-core.md) - Meta record Details Intent The rules governing performance discipline — measured optimization, planned capacity, no guesswork. Invariant Performance is improved only by measuring first; no optimization is applied unmeasured. Flow ```text Measure → Optimize → Verify ``` Composes none Composed by [Queuing Theory](https://banes-lab.com/records/algorithms/queuing-theory.md), [Profile-First Over Unmeasured Optimization](https://banes-lab.com/records/algorithms/no-unmeasured-optimization.md) Forces none Principle [Performance Engineering](https://banes-lab.com/records/architecture/performance-engineering.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Contracts Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md) - Meta record Details Intent The rules governing interfaces and contracts — explicit typed boundaries, versioned change, no implicit or breaking contracts. Invariant A boundary is safe only when its contract is explicit, typed, and versioned. Flow ```text ExplicitContract → TypedBoundary → VersionChange ``` Composes none Composed by [Design By Contract Over Implicit Contract](https://banes-lab.com/records/algorithms/no-implicit-contract.md), [Versioned Evolution Over Breaking Change](https://banes-lab.com/records/algorithms/no-breaking-change.md), [Schema-Validated Boundary Over Untyped](https://banes-lab.com/records/algorithms/no-untyped-boundary.md) Forces none Principle [Explicit Contracts](https://banes-lab.com/records/architecture/explicit-contracts.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Causality Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Causality Core](https://banes-lab.com/records/layer/causality-core.md) - Meta record Details Intent The rules governing causal ordering and time — logical ordering, retractable state, no wall-clock dependence. Invariant Order is well-defined only through logical causality, never wall-clock assumptions. Flow ```text LogicalOrder → Retract → NoWallClock ``` Composes none Composed by [Monotonic Growth Over Retraction](https://banes-lab.com/records/algorithms/no-retraction.md), [Ordinal Time Over Timestamps](https://banes-lab.com/records/algorithms/no-timestamps.md) Forces none Principle [Causality](https://banes-lab.com/records/architecture/causality.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Declarative Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Declarative Core](https://banes-lab.com/records/layer/declarative-core.md) - Meta record Details Intent The rules favoring declarative over imperative — declared configuration, separated concerns, no imperative wiring. Invariant Behavior is declared as data, not encoded imperatively. Flow ```text Declare → Separate → NoImperativeConfig ``` Composes none Composed by [Homoiconicity Over Separation](https://banes-lab.com/records/algorithms/no-separation.md), [Declarative Config Over Imperative](https://banes-lab.com/records/algorithms/no-imperative-config.md) Forces none Principle [Declarative Configuration](https://banes-lab.com/records/architecture/declarative-configuration.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Extensibility Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Extensibility Core](https://banes-lab.com/records/layer/extensibility-core.md) - Meta record Details Intent The rules governing extension — declarative discovered wiring over hardcoded, no imperative hardcoded registration. Invariant The system extends without modification only when wiring is declarative and discovered, not hardcoded. Flow ```text DeclareWiring → Discover → Extend ``` Composes none Composed by [Convention Discovery Over Hardcoded Wiring](https://banes-lab.com/records/algorithms/no-hardcoded-wiring.md), [Declarative Config Over Imperative](https://banes-lab.com/records/algorithms/no-imperative-config.md) Forces none Principle [Open/Closed Principle (OCP)](https://banes-lab.com/records/architecture/open-closed.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Observability - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Observability](https://banes-lab.com/records/layer/observability.md) - Meta record Details Intent The rules ensuring a system is observable — emitted metrics and signals, no unobserved execution, no opaque runtime. Invariant A system is operable only when its behavior is observable through emitted signals. Flow ```text Emit → Trace → NoOpaque ``` Composes none Composed by [Observed Execution Over Unobserved](https://banes-lab.com/records/algorithms/no-unobserved.md), [Computed Health Over Metric Health](https://banes-lab.com/records/algorithms/no-metrics.md), [Observable Signals Over Opaque Runtime](https://banes-lab.com/records/algorithms/no-opaque-runtime.md) Forces none Principle [Observability](https://banes-lab.com/records/architecture/observability.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Enforcement Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Enforcement Core](https://banes-lab.com/records/layer/enforcement-core.md) - Meta record Details Intent The rules ensuring discipline is enforced programmatically — automated gates over convention, no discipline-only reliance. Invariant A rule holds only when a gate enforces it; a rule kept by convention alone drifts. Flow ```text Gate → Automate → NoConventionOnly ``` Composes none Composed by [Structural Release Over Discipline](https://banes-lab.com/records/algorithms/no-discipline-release.md), [Rule As Code Over Convention](https://banes-lab.com/records/algorithms/no-convention-enforcement.md) Forces none Principle [Fitness Functions](https://banes-lab.com/records/architecture/fitness-functions.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Atomic Boundary - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Atomic Boundary](https://banes-lab.com/records/layer/atomic-boundary.md) - Meta record Details Intent The rules governing atomicity — a transactional boundary that fully commits or fully rolls back, no partial commit, no deferring within. Invariant A boundary either fully commits or fully rolls back; no partial state escapes. Flow ```text Begin → AllOrNothing → Commit ``` Composes none Composed by [Immediacy Over Deferring](https://banes-lab.com/records/algorithms/no-deferring.md), [Atomic Boundary Over Partial Commit](https://banes-lab.com/records/algorithms/no-partial-commit.md) Forces none Principle [Atomicity](https://banes-lab.com/records/architecture/atomicity.md) Grounds none Refused by rules atomic-boundary How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Human Factors - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Human Factors](https://banes-lab.com/records/layer/human-factors.md) - Meta record Details Intent The rules governing human ergonomics — bounded cognitive complexity, acted-on feedback, explicit approval, no unlimited options. Invariant A system is usable only when its cognitive load is bounded and its decisions are approved and reversible. Flow ```text BoundComplexity → Approve → ActOnFeedback ``` Composes none Composed by [Mandatory Over Optional](https://banes-lab.com/records/algorithms/no-optional.md), [Approved Evolution Over Unapproved](https://banes-lab.com/records/algorithms/no-unapproved.md), [Enforced Feedback Over Ignored](https://banes-lab.com/records/algorithms/no-ignored-feedback.md), [Bounded Complexity Over Unlimited](https://banes-lab.com/records/algorithms/no-unlimited.md) Forces none Principle [Principle of Least Surprise](https://banes-lab.com/records/architecture/principle-of-least-surprise.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Domain Modeling - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Domain Modeling](https://banes-lab.com/records/layer/domain-modeling.md) - Meta record Details Intent The rules governing domain boundaries — bounded contexts, ubiquitous language, no leaky context. Invariant A domain model stays coherent only when its context boundaries do not leak. Flow ```text BoundContext → NoLeak → UbiquitousLanguage ``` Composes none Composed by [Anti-Corruption Layer Over Cross-Context Leak](https://banes-lab.com/records/algorithms/no-leaky-context.md) Forces none Principle [Bounded Context](https://banes-lab.com/records/architecture/bounded-context.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Design Patterns Core - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - Layer: [Design Patterns Core](https://banes-lab.com/records/layer/design-patterns-core.md) - Meta record Details Intent The rules governing design-pattern use — patterns applied only to demonstrated recurrence, no speculative pattern application. Invariant A pattern is warranted only by demonstrated recurrence, never speculation. Flow ```text ObserveRecurrence → ApplyPattern → NoSpeculation ``` Composes none Composed by [Pattern By Fit Over Speculative Pattern](https://banes-lab.com/records/algorithms/no-speculative-pattern.md) Forces none Principle [First-Principles Design](https://banes-lab.com/records/architecture/first-principles-design.md) Grounds none How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### State Pattern - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) Details Intent The State design pattern — encapsulate state-dependent behavior in distinct state objects so transitions replace conditional branching. Invariant State-dependent behavior is expressed by delegating to a current-state object, not by scattered conditionals. Flow ```text DefineStates → DelegateBehavior → Transition ``` Composes none Composed by [Finite State Machine](https://banes-lab.com/records/algorithms/finite-state-machine.md) Forces none Principle [State Pattern](https://banes-lab.com/records/architecture/state-pattern.md) Grounds none Before ```text State-dependent behavior scattered as if/else conditionals on a status flag. ``` After ```text define state objects → delegate behavior to the current-state object → transition replaces the conditional branching ``` How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Separation of Concerns - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) Details Intent The principle of separating a system into distinct concerns so each is addressed and changed independently. Invariant Each concern is localized to one place and changes independently of the others. Flow ```text IdentifyConcerns → Separate → IsolateChange ``` Composes none Composed by [Statecharts](https://banes-lab.com/records/algorithms/statecharts.md) Forces none Grounds none Refused by rules separation-of-concerns Before ```text One module mixes parsing, persistence, and rendering — a change in one ripples through all. ``` After ```text identify concerns → separate each into one place → each concern changes independently ``` How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Concurrency Correctness - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) Details Intent The rules ensuring correct concurrent behavior — no data races, well-defined interleavings, verified with models such as Petri nets. Invariant Concurrent correctness holds only when every interleaving preserves the invariants. Flow ```text ModelInterleavings → PreventRaces → Verify ``` Composes none Composed by [Petri Nets](https://banes-lab.com/records/algorithms/petri-nets.md) Forces none Grounds none Before ```text Concurrent access with a data race; some interleaving violates the invariant. ``` After ```text model interleavings → prevent races → verify every interleaving preserves the invariants ``` How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ### Capacity Planning - Domain: [Architectural Clusters](https://banes-lab.com/ontology/algorithms/algorithms-domain-architectural-clusters.md) - Tier: [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) Details Intent The activity of forecasting resource demand and provisioning capacity to meet it, informed by queuing theory. Invariant Capacity meets demand only when provisioning is derived from measured or modeled load, not guessed. Flow ```text ModelLoad → Forecast → Provision ``` Composes none Composed by [Queuing Theory](https://banes-lab.com/records/algorithms/queuing-theory.md) Forces none Grounds none Before ```text Capacity guessed, then saturates under production load. ``` After ```text model load → forecast demand → provision from measured/modeled load, not a guess ``` How it is checked Checked by the layer and tension join, which places every principle in a cluster and resolves every tension between clusters Population Every architecture and lexicon record the membership map places in the cluster Freshness A verdict stands until the membership map, the topology or a member record changes Refusal The gate fails on a tension with no resolution, or an override that matches no live edge Observation None, because a cluster is a grouping of principles Evidence Watched to fire and to accept: a suite plants a tension between two principles no layer places, and the bundled tensions resolve with no dead override Authoritative side The membership map and the topology, which a tension's resolution is derived from Depends on Not answered Shape it refuses Not answered ## Links to - [exempt](https://banes-lab.com/records/vocabulary/domain-tier-exempt.md) - [Structural Core](https://banes-lab.com/records/layer/structural-core.md) - [Finite State Machine](https://banes-lab.com/records/algorithms/finite-state-machine.md) - [Constraints Over Shortcuts](https://banes-lab.com/records/algorithms/no-shortcuts.md) - [Forward Compatibility Over Backward Compatibility](https://banes-lab.com/records/algorithms/no-backward-compat.md) - [Fail-Fast Over Fallback](https://banes-lab.com/records/algorithms/no-fallback.md) - [Explicit Removal Over Deprecation](https://banes-lab.com/records/algorithms/no-deprecation.md) - [Greenfield Over Legacy](https://banes-lab.com/records/algorithms/no-legacy.md) - [Single-Path Determinism Over Dual-Path](https://banes-lab.com/records/algorithms/no-dual-path.md) - [Compression Over Repetition](https://banes-lab.com/records/algorithms/no-uncompressed.md) - [Semantic Addressing Over Location Addressing](https://banes-lab.com/records/algorithms/no-location.md) - [Homoiconicity Over Separation](https://banes-lab.com/records/algorithms/no-separation.md) - [Bounded Complexity Over Unlimited](https://banes-lab.com/records/algorithms/no-unlimited.md) - [Rule As Code Over Convention](https://banes-lab.com/records/algorithms/no-convention-enforcement.md) - [Injected Dependency Over Hidden](https://banes-lab.com/records/algorithms/no-hidden-dependency.md) - [Convention Discovery Over Hardcoded Wiring](https://banes-lab.com/records/algorithms/no-hardcoded-wiring.md) - [Single Source of Truth](https://banes-lab.com/records/architecture/single-source-of-truth.md) - [Correctness Core](https://banes-lab.com/records/layer/correctness-core.md) - [Petri Nets](https://banes-lab.com/records/algorithms/petri-nets.md) - [Enforced Feedback Over Ignored](https://banes-lab.com/records/algorithms/no-ignored-feedback.md) - [Errors As Language Over Silent Errors](https://banes-lab.com/records/algorithms/no-silent.md) - [Explicit Invalidity Over Hidden](https://banes-lab.com/records/algorithms/no-hidden-invalidity.md) - [Computed Health Over Metric Health](https://banes-lab.com/records/algorithms/no-metrics.md) - [Boundary Validation Over Unvalidated Input](https://banes-lab.com/records/algorithms/no-unvalidated-input.md) - [Design By Contract Over Implicit Contract](https://banes-lab.com/records/algorithms/no-implicit-contract.md) - [Schema-Validated Boundary Over Untyped](https://banes-lab.com/records/algorithms/no-untyped-boundary.md) - [Injected Nondeterminism Over Hidden](https://banes-lab.com/records/algorithms/no-hidden-nondeterminism.md) - [Fail Fast](https://banes-lab.com/records/architecture/fail-fast.md) - [Evolution Principles](https://banes-lab.com/records/layer/evolution-principles.md) - [Now Over For-Now](https://banes-lab.com/records/algorithms/no-for-now.md) - [Approved Evolution Over Unapproved](https://banes-lab.com/records/algorithms/no-unapproved.md) - [Versioned Evolution Over Breaking Change](https://banes-lab.com/records/algorithms/no-breaking-change.md) - [Pattern By Fit Over Speculative Pattern](https://banes-lab.com/records/algorithms/no-speculative-pattern.md) - [Evolutionary Architecture](https://banes-lab.com/records/architecture/evolutionary-architecture.md) - [Resource Core](https://banes-lab.com/records/layer/resource-core.md) - [Mandatory Over Optional](https://banes-lab.com/records/algorithms/no-optional.md) - [Single Owner Over Shared Ownership](https://banes-lab.com/records/algorithms/no-shared-ownership.md) - [Bounded Lifetime Over Unbounded](https://banes-lab.com/records/algorithms/no-unbounded.md) - [Enforced Symmetry Over Asymmetric Lifecycle](https://banes-lab.com/records/algorithms/no-asymmetric.md) - [Explicit Retention Over Implicit](https://banes-lab.com/records/algorithms/no-implicit-retention.md) - [Structural Release Over Discipline](https://banes-lab.com/records/algorithms/no-discipline-release.md) - [Config Externalization Over Env Fallback](https://banes-lab.com/records/algorithms/no-env-fallback.md) - [Atomic Boundary Over Partial Commit](https://banes-lab.com/records/algorithms/no-partial-commit.md) - [State Isolation](https://banes-lab.com/records/architecture/state-isolation.md) - [Execution Core](https://banes-lab.com/records/layer/execution-core.md) - [Immediacy Over Deferring](https://banes-lab.com/records/algorithms/no-deferring.md) - [Observed Execution Over Unobserved](https://banes-lab.com/records/algorithms/no-unobserved.md) - [Event Emission Over Parent Callbacks](https://banes-lab.com/records/algorithms/no-callbacks.md) - [Monotonic Growth Over Retraction](https://banes-lab.com/records/algorithms/no-retraction.md) - [Ordinal Time Over Timestamps](https://banes-lab.com/records/algorithms/no-timestamps.md) - [Saga Compensation Over Distributed 2PC](https://banes-lab.com/records/algorithms/no-distributed-2pc.md) - [Async Events Over Synchronous Cross-Boundary](https://banes-lab.com/records/algorithms/no-sync-cross-boundary.md) - [Observable Signals Over Opaque Runtime](https://banes-lab.com/records/algorithms/no-opaque-runtime.md) - [Controlled Side Effects](https://banes-lab.com/records/architecture/controlled-side-effects.md) - [Computation Core](https://banes-lab.com/records/layer/computation-core.md) - [Immutable Data Over Mutable State](https://banes-lab.com/records/algorithms/no-mutable.md) - [Determinism](https://banes-lab.com/records/architecture/determinism.md) - [Security Core](https://banes-lab.com/records/layer/security-core.md) - [Secret Store Over Hardcoded Secrets](https://banes-lab.com/records/algorithms/no-hardcoded-secrets.md) - [Least Privilege Over Broad Privilege](https://banes-lab.com/records/algorithms/no-broad-privilege.md) - [Security by Design](https://banes-lab.com/records/architecture/security-by-design.md) - [Performance Core](https://banes-lab.com/records/layer/performance-core.md) - [Queuing Theory](https://banes-lab.com/records/algorithms/queuing-theory.md) - [Profile-First Over Unmeasured Optimization](https://banes-lab.com/records/algorithms/no-unmeasured-optimization.md) - [Performance Engineering](https://banes-lab.com/records/architecture/performance-engineering.md) - [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md) - [Explicit Contracts](https://banes-lab.com/records/architecture/explicit-contracts.md) - [Causality Core](https://banes-lab.com/records/layer/causality-core.md) - [Causality](https://banes-lab.com/records/architecture/causality.md) - [Declarative Core](https://banes-lab.com/records/layer/declarative-core.md) - [Declarative Config Over Imperative](https://banes-lab.com/records/algorithms/no-imperative-config.md) - [Declarative Configuration](https://banes-lab.com/records/architecture/declarative-configuration.md) - [Extensibility Core](https://banes-lab.com/records/layer/extensibility-core.md) - [Open/Closed Principle](https://banes-lab.com/records/architecture/open-closed.md) - [Observability](https://banes-lab.com/records/layer/observability.md) - [Observability](https://banes-lab.com/records/architecture/observability.md) - [Enforcement Core](https://banes-lab.com/records/layer/enforcement-core.md) - [Fitness Functions](https://banes-lab.com/records/architecture/fitness-functions.md) - [Atomic Boundary](https://banes-lab.com/records/layer/atomic-boundary.md) - [Atomicity](https://banes-lab.com/records/architecture/atomicity.md) - [Human Factors](https://banes-lab.com/records/layer/human-factors.md) - [Principle of Least Surprise](https://banes-lab.com/records/architecture/principle-of-least-surprise.md) - [Domain Modeling](https://banes-lab.com/records/layer/domain-modeling.md) - [Anti-Corruption Layer Over Cross-Context Leak](https://banes-lab.com/records/algorithms/no-leaky-context.md) - [Bounded Context](https://banes-lab.com/records/architecture/bounded-context.md) - [Design Patterns Core](https://banes-lab.com/records/layer/design-patterns-core.md) - [First-Principles Design](https://banes-lab.com/records/architecture/first-principles-design.md) - [State Pattern](https://banes-lab.com/records/architecture/state-pattern.md) - [Statecharts](https://banes-lab.com/records/algorithms/statecharts.md)