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Concept guides/Databases in production/Database incidents

CodingDatabases in production

Database incidents

Medium3 min read

Questions it teaches

Open psql session blocks order updatesEasy15 min Inserts fail with duplicate key after a data importEasy15 min Logins fail as Redis hits its memory limitEasy15 min Search stops updating when one node's disk fillsEasy15 min New pods cannot log in to the databaseEasy15 min Cart items disappear on reloadMedium30 min Single query latency spikeMedium30 min Order latency spikes on saleMedium30 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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