May 30 · 4 min read · In a perfect database world, every application query would execute in absolute isolation, untouched by concurrent operations. In the enterprise production world, however, hundreds of client threads ar
Join discussionMay 24 · 8 min read · I was working on this problem that is interesting, and thought to share it. So the challenge goes like this: a certain server is streaming bits of data (it is serving files) to multiple endpoints. Ano
Join discussionMay 14 · 18 min read · It's 3am. The Kafka consumer pod that's been running cleanly for six weeks gets OOM-killed. Kubernetes restarts it. Five minutes later: OOM-killed again. Restart. OOM-killed a third time. By the fourt
Join discussionMay 12 · 10 min read · Concurrency is one of those topics that feels deceptively simple until it bites you at 3 AM. You've got multiple threads, they share some data, and suddenly your application freezes, produces garbage
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May 12 · 2 min read · SQLite and Concurrency: The Lockout Experienced at islistesi.com A few weeks ago, the SQLite database I use to ensure data consistency in a production ERP system gave me serious trouble with an unexpected lockout (lock) issue. Specifically, I encount...
Join discussionMay 11 · 8 min read · 42.8% HTTP error rate, 9 minutes into a load test. The culprit was a single updateMany line carelessly written during AI-assisted coding. 1. Discovery — "Why are we doing 9.5 TPS when the target is
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