Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Use this tag when dealing with data that is being cached.

A cache (pronounced CASH or CAYSH depending on your English dialect) is a place to store something temporarily in a computing environment.

In computing, active data is often cached to shorten data access times, reduce latency and improve input/output (I/O). Because almost all application workload is dependent upon I/O operations, caching is used to improve application performance. (source)

Caching is like short-term memory and can be responsible for unexpected data being displayed or data not being "forgotten" after the data has been removed from its original location.

history | excerpt history