Intermittent Doctrine DBAL Connection Pool Exhaustion in Shopware 6
Diagnosing intermittent connection pool exhaustion The goal is to determine why a Shopware 6 installation occasionally fails with 502/503 errors under high load, suspected to be caused by Doctrine DBAL’s limited connection pool. Key constraints: Default pool size is 5 connections per connection type. Persistent connections are disabled by default but can be