IE Caching limit impacts application performance

Discussion in 'Internet Explorer' started by Ram, Aug 16, 2005.

  1. Ram

    Ram Guest

    We have an application that uses Windows Internet Explorer to cache files
    from web enabled databases. Once a user hits the invisible IE caching limit
    (seems to be a ~16mb file size for IE's index.dat file), files continue to
    be written to "Temporary Internet Files" directory but they are not able to
    be utilized in subsequent sessions of our application. This is impacting our
    application performance greatly since files are redownloaded from the server
    instead of being accessed from cache. No information is provided to the user
    or anywhere informing that the cache is full and is not being utilized.

    I was hoping if somebody could help me with the following questions.

    1. What is the mechanism for index.dat entries and files to be purged?
    2. What are the current hard-coded maximums for IE caching?
    Ram, Aug 16, 2005
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  2. Sorry but there is no "invisible" cache limit, and if there was it sure as
    hell ain't 16mb. The problem is external to IE.

    Think about it. We can set caches to be as large as we want.. I have seen
    caches in the hundreds of megabytes. There is no ~16mb file size limit.

    Sandi - Microsoft MVP since 1999

    Inetexplorer has changed - for instructions on how to
    find old URLs, go here:
    Sandi Hardmeier - MVP, Aug 17, 2005
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  3. Ram

    Ram Guest

    Is there any limit on the size of index.dat file in the cache? I mean, if
    the index.dat file exceeds a certain size, it is no longer stored in the
    cache but in the temporary internet files folder?
    Ram, Aug 17, 2005
  4. Frank Saunders, MS-MVP, IE/OE, Aug 17, 2005
  5. Sandi Hardmeier - MVP, Sep 8, 2005
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