How can the amount of data stored in the cache be regulated?

The amount of data in the cache can be regulated in several ways:

• Limiting cache size — setting a maximum number of elements or total memory size that the cache can occupy.
• Using eviction algorithms — such as LRU (Least Recently Used), LFU (Least Frequently Used), to remove the least needed data when full.
• Configuring time-to-live (TTL) — setting a time after which data is considered stale and is removed from the cache.
• Dynamic management — monitoring load and increasing or decreasing cache size as needed.

An example using the groupcache or ristretto library in Go allows setting limits and cleanup policies.