Troubleshooting Redis Connection Pool Exhaustion in Node.js Applications
### The Root Cause: Why Redis Exhaustion Happens Unlike standard relational databases (such as PostgreSQL or MySQL) that heavily rely on traditional, long-lived server-side multi-threaded connection pools, Redis operates on a single-threaded event loop architecture. Every command sent to Redis is parsed sequentially. In a Node.js framework, if your API endpoint initiates a brand-new Redis…