# Architecture principles whose scope is distributed state

> 7 records

This index as JSON: https://banes-lab.com/json/api/facets/architecture/scope/distributed-state

## Entries

- [Causality](https://banes-lab.com/records/architecture/causality.md): A design rule that every effect records the event that caused it, so its order can be reasoned about.
- [Hybrid Logical Clocks](https://banes-lab.com/records/architecture/hybrid-logical-clocks.md): A mechanism that combines physical time with a logical counter, so timestamps follow causal order and stay close to wall-clock time.
- [CRDTs](https://banes-lab.com/records/architecture/crdts.md): A mechanism that stores replicated state in data types whose merge is commutative, so replicas converge without coordination.
- [Total-Order Broadcast](https://banes-lab.com/records/architecture/total-order-broadcast.md): A mechanism that delivers every message to every node in the same order, agreed by consensus.
- [CAP Theorem](https://banes-lab.com/records/architecture/cap-theorem.md): A conceptual representation of the choice a distributed store makes during a network partition, between consistency and availability.
- [PACELC Theorem](https://banes-lab.com/records/architecture/pacelc-theorem.md): A conceptual representation that extends the CAP theorem with the trade-off a healthy network still forces, between latency and consistency.
- [Space-Based Architecture](https://banes-lab.com/records/architecture/space-based-architecture.md): A convention of holding working state in a replicated in-memory space, so no central database limits scaling.