Cache Data Using Selectable Backends
Explore how to build a flexible caching system in Node.js by applying the Strategy Pattern. Understand how to create interchangeable caching strategies, including in-memory, file-based, and no-op caches, that can be swapped at runtime without conditional code. This lesson enables you to design adaptable caching solutions suited to different environments like development, production, and testing.
We'll cover the following...
We'll cover the following...
Problem statement
Your team’s application needs a caching layer—but deployment environments differ:
Development should use an in-memory cache for speed.
Production must persist cache data between restarts via a file-based cache.
Testing should use a no-op cache that does nothing, so tests don’t leave traces. ...