How do you extend and customize Drupal’s caching mechanisms?

How do you extend and customize Drupal’s caching mechanisms?

Answer: To extend and customize Drupal’s caching mechanisms, you can:

1. Use Cache Tags: Implement cache tags to invalidate specific cache entries when related content changes.
2. Custom Cache Backends: Create custom cache backends by extending the CacheBackendInterface, allowing more control over where cache data is stored.
3. Cache Contexts: Utilize cache contexts to vary cached output based on user roles, languages, or other specific conditions.
4. Cache Scenarios: Define custom caching scenarios for various page elements using the `cache` metadata in render arrays.
5. Cache API: Use the Cache API (`cache_set()`, `cache_get()`, etc.) to manage caching programmatically, ensuring efficient data retrieval.

These methods help optimize performance and tailor caching behavior to specific site needs.

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