We have an application that uses Windows Internet Explorer to cache files\nfrom web enabled databases. Once a user hits the invisible IE caching limit\n(seems to be a ~16mb file size for IE's index.dat file), files continue to\nbe written to "Temporary Internet Files" directory but they are not able to\nbe utilized in subsequent sessions of our application. This is impacting our\napplication performance greatly since files are redownloaded from the server\ninstead of being accessed from cache. No information is provided to the user\nor anywhere informing that the cache is full and is not being utilized.\n\nI was hoping if somebody could help me with the following questions.\n\n1. What is the mechanism for index.dat entries and files to be purged?\n2. What are the current hard-coded maximums for IE caching?