php - Need some undertanding of multi level cache scenario -


i aware of how use cache mysql(using views , few other technology), php(using smarty), web pages(writing web pages once limited time , loading them whenever required).

now have come across term called multi-level cache think not aware of it.

it great if can give me head start on it.

i not asking give complete details @ all.

few bullet points enough.

i have researched on google , did not find article.

any appreciated.

here small info on multi-level caching

a multilevel cache spreads cached data contents across several servers across network.

  1. the top level caching server holds commonly accessed pages, , lowest-level caching server holds least commonly accessed pages.
  2. the various levels combine in network of cache servers called web caching mesh.
  3. the caches communicate among themselves, using http , special cache-coordination protocols, divide contents appropriately , maintain consistency among servers

more info can referred here, here, here , here


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