Tag
Five layers walked top to bottom — browser headers, CDN edge with its famous incident, Redis with a job description, database-adjacent options — plus the staleness grid that makes TTLs a product decision.
Why the bug is syntactically invisible, making the framework tattle with preventLazyLoading, the fix taxonomy beyond with(), and the two siblings — over-eager loading and unbounded gets — hiding behind it.
The B-tree mental model everything follows from, composite column order as the whole game, covering and partial indexes, reading EXPLAIN without a priesthood, and the quarterly maintenance contract.
Sockets are tenants, not confetti: the pub/sub backplane, stateless nodes and rolling drains, the reconnect stampede and its jittered cure, missed-message recovery by data shape, and the capacity cliffs to test first.
Cache-aside with the two mandatory upgrades — TTL jitter and stampede protection — plus version-stamped invalidation, the after-commit trap, and the three metrics that keep a cache honest.
