← DictionaryCaching
also called cache
Storing a copy of content so it can be served faster next time.
Saved copies, served instead of rebuilt.
What It Is
You will find Caching in the Technology layer, alongside the rest of Hosting. The working definition is simple: storing a copy of content so it can be served faster next time.
It is a mechanism rather than an opinion: set up properly it behaves predictably, and set up badly it fails just as predictably. Once it is defined that clearly, arguments about it usually stop.
How It's Used
Caching comes up in build decisions, tooling and the plumbing behind a working system. It is usually discussed together with Content Delivery Network, Site Speed and Deployment. The practical test is whether it is configured, documented and actually working.
Why It Matters
Getting Caching wrong is expensive in a quiet way. When it is unclear, small technical debts compound into a rebuild. It is worth pinning down before anyone builds on top of it.
Think of plumbing. Nobody admires it, everybody notices when it leaks. Saved copies, served instead of rebuilt.
Termshift™
How the meaning shifts depending on who is using it, and where.
Practitioners use Caching as shorthand and expect no explanation — storing a copy of content so it can be served faster next time.
Outside the industry, most people would just say: saved copies, served instead of rebuilt.
The Bottom Line
If you only keep one thing about Caching: saved copies, served instead of rebuilt. Everything after that is detail.