Learning path
Connection Pool Mastery
Why connections are expensive, pgbouncer modes, sizing, and the storms that exhaust a pool.
backend, platform, SRE · Intermediate · 2 courses · 10 simulations
The path
Courses, then incidents
Work through the courses, then practise the incidents — each step links to its page.
- Course Why Connections Are Expensive →
- Course Pool Modes and Sizing →
- connections-pooling Too many connections →
- connections-pooling Idle connection leak →
- connections-pooling Connection storm after deploy →
- connections-pooling PgBouncer pool exhausted →
- connections-pooling Transaction pooling surprise (lost session state) →
- connections-pooling Prepared statements vs transaction pooling →
- connections-pooling Runaway query holds a pool connection →
- connections-pooling App retry connection storm →
- connections-pooling Pool size misconfiguration →
- connections-pooling Oversized max_connections →