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Build reliable background job systems with BullMQ. Master priority queues, rate limiting, dead letter handling, and monitoring for production resilience.
Bun is Node-compatible but not Node-identical. Learn what works, what breaks, migration strategies, and performance gains to expect.
Deep dive into Bun''s production readiness, benchmarks against Node.js, and practical migration strategies with real compatibility gaps and when to migrate.
Users see stale prices. Admins update settings but the old value is served for 10 minutes. You delete a record but it keeps appearing. Cache invalidation is famously hard — and most implementations have subtle bugs that serve wrong data long after the source changed.
Cache stampede (a.k.a. thundering herd on TTL expiry) is one of the most dangerous failure modes in high-traffic systems. The moment your cache key expires, hundreds of simultaneous requests hammer your database — often killing it. Here''s how it happens, and exactly how to fix it.