Engineering Playbook — PlaybookDurable patterns and decisions for building production software.http://localhost:4321/Caching — the cheapest way to lose a weekendhttp://localhost:4321/playbook/caching/http://localhost:4321/playbook/caching/Cache layers, TTL vs invalidation, stampede protection, key hygiene, and the case for not caching at all.Sat, 25 Apr 2026 00:00:00 GMTcachingperformancearchitectureAPI design — the decisions that age wellhttp://localhost:4321/playbook/api-design/http://localhost:4321/playbook/api-design/Resource shape, error envelopes, idempotency, pagination, and versioning. What I pick, why, and the failure mode each choice prevents.Sun, 12 Apr 2026 00:00:00 GMTapiarchitecturerest