Health Checks

Kind: mechanism

Layer: Correctness Core

Record: architecture:health-checks

Severity: contextual

Scope: service, deployment, runtime

Canonical: Ontology

A mechanism that reports whether an instance and the dependencies it needs are ready to serve, so routing and restarts can act on it.

Listed in Architecture principles, after Self-Healing Architecture and before Failover.

Requires

• Observable Health Criteria

Reinforces

• Self-Healing Architecture
• Load Balancing

Enables

• Readiness/Liveness Routing

Conflicts with

• Blind Routing

In tension with

• False Positives

Tensions

• Health Checks / False Positives

Violated by

• Blind Routing

Severity

• contextual

Category

• Self-Healing / Recovery / Deployment Safety

Required by

• Service Discovery

Linked from

• Runtime Discovery / Dynamic Binding
• Scalability / Performance / Optimization
• Plugin / Extensibility / IoC
• Self-Healing / Recovery / Deployment Safety
• Core Vocabulary
• Self-Healing / Recovery / Deployment Safety
• Severity levels
• The resolutions