Any good resources for building a content distribution network?
Any good resources or advices for building such network? We're thinking to build a global load balanced network in a few datacenters, instant of doing a fail over cluster in one DC, which is more reliable when unexpected problems occurs.
There are some questions running over my head
1) Most content distribution network are using cache servers, so clients can access the content in cache server instant of loading real server, like a proxy, but my question is, when real server is down, clients can't update the data with cache server? or is there a way to replicate the data for this period?
2) How does a content server works? Just replicating with the real server? like a fail over cluster but in different datacenters?
3) Cache server and content server, which one is a better?
4) Which software is recommended for cache server?
Thank you very much.
