Topic starter
A cache hit in a CDN means the requested content is already stored in the CDN’s cache, so it can be delivered immediately without contacting the origin server.]
Meaning
Cache hit = fast response from CDN cache
What happens during a cache hit
- User requests a file (e.g., image or JS file)
- CDN checks its local storage (edge server)
- File is found
- CDN serves it instantly
Why cache hits are important
- Faster loading (no round-trip to origin server)
- Lower latency (served from nearby server)
- Reduced server load (origin isn’t contacted)
- Better scalability (handles more users easily)
As Example
- First user requests
/logo.png→ not cached → fetched from origin (cache miss) - CDN stores it
- Second user requests
/logo.png→ cache hit → served instantly
Cache hit ratio
This is a key metric:
- % of requests served from cache
- Higher ratio = better performance
Posted : 05/04/2026 8:42 am
