Podbor-minuta.ru eliminates 500 database timeouts using single-flight caching
Tactic · Dev.to · stat: 500 errs Podbor-minuta.ru resolves a system-stalling cache stampede that triggered 500 timeout responses under heavy user traffic. When cached apartment listings expire, 200…
Tactic · Dev.to · stat: 500 errs
Podbor-minuta.ru resolves a system-stalling cache stampede that triggered 500 timeout responses under heavy user traffic. When cached apartment listings expire, 200 concurrent requests flood the database with identical heavy queries. The team resolves the bottleneck by implementing a single-flight caching pattern using a shared TypeScript promise map.
Simple in-memory promise maps prevent catastrophic database stampedes under load Implementing single-flight caching prevents concurrent request spikes from crashing databases, saving founders from costly and premature infrastructure upgrades.
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