On Wed, Sep 19, 2007, Henrik Nordstrom wrote: > > * A request occurs and squid checks the file for freshness, or > > no.
It doesn't? I swear I've seen code which checks whether the object is stale or not before using the in-memory copy (or whether it needs to be revalidated.) > > * Squid issues a validation requests and determines the local copy is > > stale, or > > no, but it does replace the old copy if it is given a new object to > replace the old. > > > * Squid needs to make space (as the disk store is full) and starts running > > the object replacement policy to purge objects - but then, it doesn't > > maintain > > a list of "stale" objects to purge; it just deletes the 'oldest' objects. > > * if there is certain HTTP request methods to the URL of the object > where it can be expected the object change, such as PUT. Good point, I forget about that.. Adrian
