Messages in this thread | | | Date | Tue, 8 Jun 1999 11:39:27 -0400 (EDT) | From | Jeff Garzik <> | Subject | Re: cachefs module for linux? |
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On Tue, 8 Jun 1999, Christoph Lameter wrote:
> On Tue, 8 Jun 1999, Jeff Garzik wrote: > > > On Tue, 8 Jun 1999, Juan Antonio Martinez wrote: > > > 1- Are there any fs module to implement a local disk cache over > > > NFS readonly mounted filesystems? Something about Solaris's cachefs > > > > cachefs gets mentioned now and again, and is very useful. We used it on > > the cnn.com Web farm, where we had one big machine (NFS server) and > > several Web servers all mounting the big server's drives with > > nfs+cachefs. cachefs really improved throughput, but cnn.com uses > > almost exclusively static files. > > squid does the same in a far more elegant way as we implemented for > the Sony Motion Pictures site. NFS is the wrong solution and the wrong > protocol for web caching.
True, but Squid didn't exist, or wasn't well known in 1996.
> I thought NFS already did some caching?
Not enough for the CNN Web site, which is probably at least half a terabyte of stories by now. The large selection set of frequently-viewed pages demands something more than simple buffer cache.
cachefs comes in really handy, too, setting up "diskless" machines with nothing but NFS cache and swap space.
Jeff
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