Caching is the process of collecting duplicates of original data values, that are then stored in a location that is easier to access for enhanced performance.
The following are just a few examples of the different types of cache:
- CPU cache—a small area of fast memory used by the central processing unit
- Database cache—temporary storage of database content in multi-tier applications
- Query cache—temporary storage of query data and metadata to increase performance
- Web cache—temporary storage of web documents to increase performance