black box - Stabilizing a fragile web application by proxy -

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i'm having unstable dynamic web application want stabilize running in settings:

  1. given request url u
    1. look u in cache - if it's there - fetch cache
    2. if it's not, generate cache web application.
  2. administrator able access web application directly. whenever access webpage - generated web page used update cache.

this way, know sure if web application down, of pages still accessible. , easy administrator update cache (whenever edits there - it'll updated automatically, since he'll access page afterwards).

is there generic cache similar behavior? better ideas stabilizing existing web application without changing source code?


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