[badminton1]

Caching not necessarily means more speed. Sometimes it can make things slower.

1. Get from cache

2. Determine if cached value is valid

3. Query data store

4. Put data store value in cache

5. Return data

Instead of just getting it directly. In order to be able to cache you need to think about good cache invalidation. And client side caching won't work against malicious users.

[benchaney]

Those are problems the CDN solves for you.

[badminton1]

CDN is only for static content and I was assumed all your static content would be already on a CDN... it's a standard practice.

[modoc]

CDN is NOT only for static content. Minimally Cacheable, or catchable based on cookie value, content can be cached on a CDN. Also running ALL traffic through a CDN (like CloudFlare or Akamai) allows you to do traffic optimization, FEO, DDOS protection, and much more.