Resilience & Observability
Redundancy, rate limiting, circuit breakers, bulkheads, the outbox pattern, and SRE practices.
Resilience Patterns
Redundancy
7 min →The foundational fault-tolerance pattern. Active-active, active-passive, N+1 redundancy, and the levels at which redundancy matters in modern SaaS.
Rate Limiting
8 min →How to protect SaaS platforms from abuse and noisy neighbors. Algorithms, where to enforce, and the multi-dimensional approach for tenant-aware limits.
Circuit Breakers
7 min →The pattern that stops cascading failures. How circuit breakers work, where to put them, and how to combine with retries and timeouts for production-grade resilience.
Bulkheads
7 min →The pattern that limits blast radius. Resource isolation via thread pools, connection pools, and tenant partitioning — keeping one failure from spreading.
Outbox Pattern
7 min →The atomic-write-and-publish problem and its canonical solution. How to reliably emit events when state changes — without losing events or causing inconsistencies.
Caching
9 min →How caches actually work in production. Where to put them, eviction policies, invalidation strategies, and the patterns that turn caching from a foot-gun into a force multiplier.