What data storage systems exist for temporary file caching?

For temporary caching of files on Android, the following storage systems are often used:

• Internal Cache Directory (getCacheDir()): a private space for the app for temporary files, automatically cleared by the system when space is needed.
• External Cache Directory (getExternalCacheDir()): cache on external storage, accessible to the app but with security restrictions.
• Memory Cache: storing data in RAM using libraries like LruCache for quick access.

The choice depends on the size of the files, security requirements, and data accessibility. For example, internal cache is often used for images, while external cache is suitable for large temporary files.