On what basis do you decide to update cache content?

Cache content updates usually occur based on the following factors:

• Data Time-To-Live (TTL): if data is outdated, the cache is refreshed.
• Changes in source data: when new data is received from the network or database, the cache is updated.
• Cache size and replacement policy: if the cache is full, old or less frequently accessed data is replaced.
• User actions: such as manual refresh or pull-to-refresh.

In Android, a common approach is to check data freshness (for example, via HTTP headers or timestamps) and update the cache if data has changed or become stale, to balance performance and data freshness.