39 long-form articles on production engineering — how real systems fail, why, and what actually fixed them.
5 articles matching “TTL”
Tradeoffs in Production15 min read
When a service buckles under load, the first instinct is to make the buffer bigger — and it's the most natural wrong answer in systems engineering.
Picking the Right DB15 min read
A senior-engineer walkthrough of how Redis really handles TTLs. Why TTL=0 doesn't free memory. The two strategies — lazy (on-access) and active (the random-sample-and-25%-threshold sampler).
Scaling & Infra20 min read
Not a "what is Lambda" post. A deep dive into how Lambda actually works: Firecracker microVMs and the Worker/placement fleet, how invocations get routed on the warm vs cold path, and what the INIT phase really does (and…
Query Optimization18 min read
Every team ships with the same lie: throw everything on the database and it'll handle correctness. Works at 50 writes/sec.
Performance14 min read
Why your connection pool config is probably wrong — and how to fix it with Little's Law, Kingman's Formula, and the process-to-core ratio.