Caching Prompts

Add caching to my [web app / API / mobile backend]. Right now, every request hits the database directly, even for data that rarely changes.

I need:
- Cache frequently accessed data like [user profiles / product listings / search results]
- Set a TTL of [1 hour] so the cache stays fresh
- Invalidate the cache when the underlying data is updated
- Log cache hits vs misses so I can measure the impact
- Use [Redis / in-memory / file-based] caching

My stack: [your framework and language here]

I'm learning, so explain each part simply.

My app calls external APIs like [payment gateway / weather service / social media API] and I'm hitting rate limits and adding unnecessary latency.

Set up an API response caching layer that:
- Caches responses based on the request URL + parameters
- Respects the API's Cache-Control headers when available
- Falls back to a configurable TTL when no cache headers exist
- Serves stale cache if the external API is down (stale-while-revalidate)
- Tracks cache hit rate and average response time saved

My stack: [your framework and language here]

I'm learning, so explain each part simply.

Design a multi-layer caching strategy for my app. I have performance issues at scale and need caching at multiple levels:

1. Database query caching, for repeated queries
2. Page/fragment caching, for rendered HTML or component output
3. CDN caching, for static assets and public pages

Requirements:
- Each layer should have independent TTL and invalidation
- Cache warming on deploy for critical paths
- A simple way to flush specific caches when content updates
- Monitoring: hit rate, memory usage, stale serves

My app: [describe your app and stack]

I'm learning, so explain each part simply.