Connection Pools
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Overview
In this guide, you can learn about how Node.js driver uses connection pools to manage connections to a MongoDB deployment and how you can configure connection pool settings in your application.
A connection pool is a cache of open database connections maintained by Node.js driver. When your application requests a connection to MongoDB, Node.js driver seamlessly gets a connection from the pool, performs operations, and returns the connection to the pool for reuse.
Connection pools help reduce application latency and the number of times new connections are created by Node.js driver.