How to Fix MySQL Connection Pool Timeout on AWS RDS Proxy Idle Instances
Your application's first request after a period of low traffic fails with a connection timeout when going through RDS Proxy, even though the underlying RDS...
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28 results for "Connection Pool"
Python requests Library Connection Pool Full Warning Under Heavy Load
The "Connection pool is full, discarding connection" warning from urllib3 (used internally by the requests library) means your application is making more...
PostgreSQL "Prepared Statement Does Not Exist" Error in Connection Poolers (PgBouncer)
"Prepared statement does not exist" specifically under PgBouncer almost always comes down to a fundamental incompatibility between how prepared statements work...
MySQL Connection Pool Exhausted, Too Many Active Connections
A connection pool reporting itself exhausted, even before hitting MySQL's own hard max_connections ceiling, means your application-level pool has run out of...
Postgres Connection Pool Leak With Node or Python App
A connection pool leak means your application is checking out database connections from the pool but not consistently returning them, so the pool gradually...
How to Fix PostgreSQL "FATAL: Sorry, Too Many Clients Already" With Serverless Next.js
Your Next.js app deployed on a serverless platform (Vercel, AWS Lambda, Netlify Functions) works fine at first, then starts throwing connection errors under...
How to Fix Go net/http Client Leaking File Descriptors Under Heavy Load
Your Go service makes a lot of outbound HTTP requests, and under sustained load, it starts hitting file descriptor limits or degraded performance over time....
How to Resolve "FATAL: Remaining Connection Slots Are Reserved for Non-Replication Superuser Connections"
PostgreSQL has hit its maximum connection limit and is now refusing new connections from regular application users, reserving whatever's left specifically for...
How to Resolve "ERROR: Relation Does Not Exist" in Multi-Schema PostgreSQL
A query fails claiming a table doesn't exist, even though you can clearly see it when browsing the database. In a PostgreSQL database using multiple schemas,...