Proxy caching

• Browser pointed at cache instead of origin server

• No impact on non-Web traffic

• Incremental hardware/software costs limited to cache server and software

• Every browser needs to be re-configured

• Each client hits only one cache

  • Can’t take advantage of data stored in other local caches, lowering hit rate
  • Lower hit rates mean user delays and unnecessary WAN traffic
  • If cache is down, user loses web access until browser reconfigured

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