In what situations and places should object caching be used?

Object caching in iOS should be used when:

• Data or resources (e.g., images, results of network requests) are frequently used and their retrieval or computation takes significant time.
• There is a need to reduce network or CPU load.
• It is important to ensure a smooth and fast user experience.

Typical caching locations:

• In memory (e.g., NSCache) for quick access to recently used objects.
• On disk for storing large or infrequently changing data.

Example: caching images loaded from the network so they do not need to be reloaded upon redisplay.