salvoaranzulla commented on issue #1679: pagespeed with load balancer (nginx) and front-end (apache) URL: https://github.com/apache/incubator-pagespeed-ngx/issues/1679#issuecomment-582923262 Hi, Thanks for your reply and clarification. So it's better to run mod_pagespeed in each our 4 front-end with Apache and Memcached. I have another question. When we run mod_pagespeed in our 4 front-end and I go to Pagespeed Admin to purge cache, I always see a different timestamp after "Everything before this time stamp is invalid": - Do I need to purge cache in each 4 front-end? - Do I need to use a shared folder (maybe in a NAS) in ModPagespeedFileCachePath instead of "/var/cache/pagespeed/"? Thanks, Salvatore On Thu, Feb 6, 2020 at 3:00 PM Joshua Marantz <[email protected]> wrote: > That is an interesting idea, and I can see the potential value. But the > system isn't quite designed for that use-case. > > The reason, I'm guessing, that you'd prefer this architecture to simplify > using ngx_pagespeed in the proxy and removing it from the Apache instances, > is that you want to keep the proxy lean, and have the Apache instances take > care of all the hard work of (say) image optimization and URL fetching. > > The problem in practice is that when the standby ngx_pagespeed instance > sees a .pagespeed. URL that is *not* in the cache, it will need to serve > it; it won't proxy the request through to the backend servers. To serve it, > it will need to fetch it and optimize it. Maybe if your cache TTLs are long > and your memcached instance is large, that will rarely happen. But in that > case you will do pretty well at steady-state with just ngx_pagespeed at the > proxy. > > > > On Thu, Feb 6, 2020 at 7:48 AM salvoaranzulla <[email protected]> > wrote: > > > Hi, > > > > We have a lod balancer with nginx (proxy_pass) and many front-end with > > apache and mod_pagespeed. We use memcached servers for mod_pagespeed > cache. > > > > I'd like to know if it's a good idea installing ngx_pagespeed on load > > balancer and configuring it with: > > > > pagespeed standby; > > pagespeed MemcachedServers "same memcached server of mod_pagespeed of > > frontend"; > > > > to avoid request to Apache (and mod_pagespeed) from nginx load balancer > > for already optimized resources (*.pagespeed.* file). > > > > Thanks, > > Salvatore > > > > — > > You are receiving this because you are subscribed to this thread. > > Reply to this email directly, view it on GitHub > > < > https://github.com/apache/incubator-pagespeed-ngx/issues/1679?email_source=notifications&email_token=AAO2IPLXRJDDGGLFKNDQVMLRBQBKTA5CNFSM4KQ4JUGKYY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4ILQBRKA > >, > > or unsubscribe > > < > https://github.com/notifications/unsubscribe-auth/AAO2IPPNREICSOCAWVSJDX3RBQBKTANCNFSM4KQ4JUGA > > > > . > > > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <https://github.com/apache/incubator-pagespeed-ngx/issues/1679?email_source=notifications&email_token=ABNVCX64VZIQTEWC3MVOQP3RBQJZNA5CNFSM4KQ4JUGKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEK7KA4Q#issuecomment-582918258>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/ABNVCXYXA5PJMNN54JGVXM3RBQJZNANCNFSM4KQ4JUGA> > . >
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