[android-developers] Re: The Market App has a CACHE !

Given the global scale of the Marketplace, some update latency is to
be expected. There is, no doubt, a central master database of
applications but you can bet that the database is replicated out to
dozens of local copies around the globe. This replication process is
usually completely decoupled from any application updates you might
make, which means your app gets pushed out in a few minutes or a few
hours, depending on where you happen to be in the schedule.

So it's not caching in the sense of getting a web page to load faster.
It's management of Wide Area Network links to optimize their use. The
goal is to use the lowest speed links you can get away with, keep them
"full" of data 24/7, and still have pretty fast download speeds from
the local copies of the data.

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