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Concept guides/Databases in production/Database connection pool exhaustion

CodingDatabases in production

Database connection pool exhaustion

Medium3 min read

Questions it teaches

Lambda spike connection rejectedMedium30 min Connection pool exhaustedMedium30 min Database connection pool exhaustionMedium35 min Prepared statement errors in pgBouncerMedium30 min Database connections idle in transactionMedium30 min Connection pool idle in transactionHard40 min Connection pool storms after failoverHard35 min Failover connection pool spikeHard35 min

Related

Databases in production Observability SQL Incident response Dependencies and deploys

Builds on: Observability

Cron failures (silent drops)3 min A/b variant regression4 min

Builds on: SQL

Duplicates5 min Joins5 min

Leads to: Incident response

A restore that stalls4 min CDN time-to-live (TTL)3 min

Related: Dependencies and deploys

Configuration errors3 min Environment misconfiguration3 min

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