Transparent Proxy Caching with Web Cache Redirection

• Pro: Limited impact on non-Web traffic

• Pro: No browser or cache administration required

• Pro: Each client hits multiple caches

  • Takes advantage of data stored in all local caches, raising hit rate
  • Higher hit rates mean less user delay and less unnecessary WAN traffic
  • If any cache is down, traffic directed to other caches

• Con: Must purchase and deploy web cache redirection hardware/software

Host B

Host C

Host A

HTTPTo A

HTTPTo B

HTTPTo C

HTTPTo B

Cache Servers

L4

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