On Wed, 2008-10-08 at 16:13 -0400, David Cunningham wrote: > Simply changing auth_cache_size to a non-zero number enables caching, correct? > > How big is too big?
If it uses up too much of your memory. Although you'll probably also need to change auth_process_size then, because by default it kills the process if it grows larger than 256 MB. You could also disable it by setting it to 0. > Where does it cache it? > > Here is what I set: > > auth_cache_size = 1048576 > > I was hoping for 1GB worth of cache. I think you could do with a lot less :) I think a single user takes maybe 50-100 bytes normally. Even with 200 bytes your 5000 users would fit into 1 MB. Of course negative hits are also cached, so the rest of the memory would go to them. I'd decrease it to 10 MB or so :) Also you might want to increase auth_cache_ttl from the default hour.
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