🗄️ Databases & Backend

Postgres Connection Hell: PgBouncer Wins, Supavisor's Got Promise — But Don't Ditch the Old Guard Yet

A Postgres spike hits: 'too many connections.' Don't crank max_connections — pool 'em with PgBouncer or Supavisor. Here's the math on why.

Graph of Postgres connections spiking memory usage before pooling

⚡ Key Takeaways

  • Each Postgres connection costs 5-10MB RAM — pool to survive scales. 𝕏
  • PgBouncer's transaction mode reuses best but skips session features. 𝕏
  • Size pools by hardware, not app instances: cores * 2 + disks. 𝕏
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Originally reported by dev.to

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