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EPISODE · May 26, 2026 · 13 MIN

Why Database Connection Pools Fail at Scale

from Database Tech with Fexingo: SQL, NoSQL, and Data Storage Conversations · host Fexingo

Episode 12 of Database Tech with Fexingo dives into a silent killer of production databases: connection pool starvation. Lucas and Luna walk through a real incident at a mid-sized fintech startup — we'll call it 'PulsePay' — where a perfectly normal pool of 200 connections collapsed under a 3x traffic spike. They explain the math behind pool sizing, the tragedy of the commons when multiple services share one pool, and why connection latency is more dangerous than query latency. You'll learn why 'just increase the pool size' is often the wrong answer, and how tools like PgBouncer and ProxySQL can help — when configured correctly. No theory without teeth: concrete numbers, a real outage timeline, and a fix that cost zero dollars. #DatabaseConnectionPooling #PostgreSQL #PgBouncer #ProxySQL #BackendEngineering #Scalability #ProductionOutage #TechPodcast #DatabaseTech #ConnectionPool #Fintech #SystemDesign #SiteReliability #SQL #NoSQL #FexingoBusiness #BusinessPodcast #Technology Keep every episode free: buymeacoffee.com/fexingo

Episode metadata supplied by the publisher feed · Published May 26, 2026

What this episode covers

Episode 12 of Database Tech with Fexingo dives into a silent killer of production databases: connection pool starvation. Lucas and Luna walk through a real incident at a mid-sized fintech startup — we'll call it 'PulsePay' — where a perfectly normal pool of 200 connections collapsed under a 3x traffic spike. They explain the math behind pool sizing, the tragedy of the commons when multiple services share one pool, and why connection latency is more dangerous than query latency. You'll learn why 'just increase the pool size' is often the wrong answer, and how tools like PgBouncer and ProxySQL can help — when configured correctly. No theory without teeth: concrete numbers, a real outage timeline, and a fix that cost zero dollars. #DatabaseConnectionPooling #PostgreSQL #PgBouncer #ProxySQL #BackendEngineering #Scalability #ProductionOutage #TechPodcast #DatabaseTech #ConnectionPool #Fintech #SystemDesign #SiteReliability #SQL #NoSQL #FexingoBusiness #BusinessPodcast #Technology Keep every episode free: buymeacoffee.com/fexingo

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Frequently Asked Questions

How long is this episode of Database Tech with Fexingo: SQL, NoSQL, and Data Storage Conversations?

This episode is 13 minutes long.

When was this Database Tech with Fexingo: SQL, NoSQL, and Data Storage Conversations episode published?

This episode was published on May 26, 2026.

What is this episode about?

Episode 12 of Database Tech with Fexingo dives into a silent killer of production databases: connection pool starvation. Lucas and Luna walk through a real incident at a mid-sized fintech startup — we'll call it 'PulsePay' — where a perfectly normal...

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