On 19/11/2011 2:28 p.m., RW wrote:
On Sat, 19 Nov 2011 13:17:48 +1300
Amos Jeffries wrote:
On 19/11/2011 12:41 p.m., RW wrote:
On Mon, 31 Oct 2011 11:38:03 +1300
Amos Jeffries wrote:
e,
Are you saying that new objects are not written to disk until they
expire from the memory cache? The implication would presumably be
that some objects are lost when squid shuts down.
Yes. There is some time spent saving as many as possible to disk
during the shutdown_timeout, but this rarely gets it all due to being
configured too short.
Consider though that caching is an entirely optional to start with.
Things in the cache can be re-fetched as needed from the network. So
there is no actual loss.
The reason I asked is that I upgraded to 3.1 and I noticed that the
defaults are:
cache_mem 256 MB
maximum_object_size_in_memory 512 KB
It struck me that a SOHO server that's turned-off overnight may cache
next to nothing under 512 K if the memory cache is lost on shutdown.
Is 256 MB small enough for everything to be saved.
Probably not. Its relative to shutdown_timeout and disk speeds.
Amos
