C
INFRASTRUCTURE
Caching
Also known as: Cache
Definition
Caching stores copies of data temporarily to serve future requests faster. Instead of recomputing or refetching from a slow source, you return the cached copy — dramatically improving speed and reducing cost.
Simple Explanation
Caching is like keeping a shortcut in your browser history. Instead of going to the library every time you want that recipe, you bookmark it. Next time, you get it instantly.
Real-World Use Case
A news site caches its homepage HTML. Instead of querying a database for every visitor, it serves the pre-built page, handling 10x more traffic at 1/10th the cost.
Examples
CDN cachingRedisBrowser cacheStatic site generationIncremental Static Regeneration
Related Terms
Learn More
- HTTP Cache Headers
- Redis Documentation