How to add Redis cache to a NestJS app

The article explores how to enhance the performance of a NestJS application by integrating caching functionality using Redis, an open-source, in-memory data structure store. It explains the concept of caching, likening it to keeping coffee at hand rather than repeatedly returning to the coffee machine, to illustrate its role in reducing data retrieval latency. The guide provides a step-by-step process for setting up Redis cache in a NestJS app, including installing necessary packages like node-cache-manager and cache-manager-redis-store, and configuring the cache module with default host and port settings. It details how to implement basic cache operations such as setting and getting cache entries and introduces advanced features like automatic caching with interceptors, which streamline data management across application endpoints. The piece emphasizes Redis's ability to deliver lower latency and high access speed, thereby enabling developers to create highly efficient and dependable applications.