edercnj/architecture-patterns

Knowledge Pack: Architecture Patterns

Purpose

Provides detailed reference documentation for architecture patterns. Complements the core architecture knowledge pack with in-depth implementation guidance for microservice, resilience, data access, integration, and architectural patterns.

Architectural Patterns

• references/cqrs.md — Command/query separation, sync strategies, consistency boundaries
• references/event-sourcing.md — Append-only event log, snapshots, projections, event versioning
• references/modular-monolith.md — Module boundaries, inter-module communication, decomposition

Microservice Patterns

• references/api-gateway.md — Edge routing, aggregation, auth at the edge
• references/bulkhead.md — Resource isolation, semaphore vs thread pool, partitioning
• references/idempotency.md — Deduplication strategies, exactly-once semantics
• references/outbox-pattern.md — Transactional event publishing, relay strategies
• references/saga-pattern.md — Orchestration vs choreography, compensation, timeouts
• references/service-discovery.md — Registration, health checks, DNS vs registry
• references/strangler-fig.md — Incremental migration, routing strategies, parallel running

Resilience Patterns

• references/circuit-breaker.md — States, configuration, fallback strategies, per-dependency circuits
• references/dead-letter-queue.md — Poison pill detection, replay, monitoring
• references/retry-with-backoff.md — Backoff strategies, jitter, retry budgets
• references/timeout-patterns.md — Timeout types, deadline propagation, hierarchy

Data Patterns

• references/cache-aside.md — Cache population, invalidation, TTL, thundering herd prevention
• references/event-store.md — Event record structure, snapshots, projections, versioning
• references/repository-pattern.md — Interface design, pagination, specification pattern
• references/unit-of-work.md — Transaction boundaries, commit/rollback, concurrency control

Integration Patterns

• references/anti-corruption-layer.md — Translation boundary, error handling, testing
• references/backend-for-frontend.md — Per-client optimization, aggregation, versioning
• references/adapter-pattern.md — Protocol bridging, resilience wrapping, auth handling

Related Knowledge Packs

| Pack | Relationship | |------|-------------| | architecture | Core hexagonal architecture principles | | resilience | Resilience principles and patterns | | api-design | API design principles | | database-patterns | Database conventions and principles |