Technology
What is Caching?
Caching is storing copies of data somewhere fast so it can be served quickly next time, instead of fetching or computing it again. Browsers, apps, and servers all use caches to make things load faster and reduce repeated work.
See it, don’t just read it.
Watch a 2-minute lesson with voice + animation that explains caching.
Key things to understand
- 1It stores data in a fast-access location for reuse.
- 2It avoids repeating slow fetches or calculations.
- 3Browsers cache web pages and images to load faster.
- 4Stale caches can show outdated data until refreshed.
Frequently asked questions
- What is caching?
- Temporarily storing copies of data in a fast location so it can be served quickly on later requests.
- Why does caching speed things up?
- It avoids re-fetching or recomputing data, serving a ready-made copy instead.
- Why do I sometimes need to 'clear my cache'?
- A cache can hold outdated files; clearing it forces fresh versions to load.