Database Connection Pooling
Learn how connection pools eliminate the overhead of opening database connections per request, and how to size and tune a pool for performance.
The Cost of a Connection
Opening a database connection is expensive: a TCP handshake, authentication, and session setup can take tens of milliseconds. Doing this on every request adds latency and load you do not need.
What a Connection Pool Is
A connection pool keeps a set of open connections ready to reuse. A request borrows one, runs its query, and returns it — no setup cost per request.
- Lower latency
- Less load on the database
- A natural cap on concurrent connections
All lessons in this course
- Latency & Throughput Optimization
- Concurrency & Parallelism
- Performance Testing & Profiling
- Database Connection Pooling