Hi Perrin, Thanks for pointing out the document. We are using mod_perl enabled apache server for dynamic content. From the description of the document, the “proxy” server acts much like a memcache but it appears the difference is the “proxy” understands the HTTP protocol while memcache does not. We use load balancer in front of front end servers which can cache some static content. But load balancer has RAM limit. We cannot cache beyond that limit. memcache can cache dynamic content but it is not directly respond to HTTP request. Would you think this “proxy” server sitting in front of the front end server but behind the load balancer?
- xinhuan From: Perrin Harkins <phark...@gmail.com<mailto:phark...@gmail.com>> Date: Thursday, November 13, 2014 at 2:23 PM To: Xinhuan Zheng <xzh...@christianbook.com<mailto:xzh...@christianbook.com>> Cc: mod_perl list <modperl@perl.apache.org<mailto:modperl@perl.apache.org>> Subject: Re: Disconnect database connection after idle timeout Yes, it's an HTTP proxy. It handles sending out the bytes to remote clients, so that your mod_perl server doesn't have to. A popular high-performance choice these days is nginx. There's some discussion of why to use a front-end proxy here: http://perl.apache.org/docs/1.0/guide/strategy.html - Perrin On Thu, Nov 13, 2014 at 2:12 PM, Xinhuan Zheng <xzh...@christianbook.com<mailto:xzh...@christianbook.com>> wrote: Hi Perrin, I don’t quite understand what you mean by setting up a front-end proxy. What would you expect this “proxy” do? Does it take HTTP request? Thanks, - xinhuan From: Perrin Harkins <phark...@gmail.com<mailto:phark...@gmail.com>> Date: Thursday, November 13, 2014 at 12:50 PM To: Xinhuan Zheng <xzh...@christianbook.com<mailto:xzh...@christianbook.com>> Cc: Dr James Smith <j...@sanger.ac.uk<mailto:j...@sanger.ac.uk>>, mod_perl list <modperl@perl.apache.org<mailto:modperl@perl.apache.org>> Subject: Re: Disconnect database connection after idle timeout On Thu, Nov 13, 2014 at 12:19 PM, Xinhuan Zheng <xzh...@christianbook.com<mailto:xzh...@christianbook.com>> wrote: Having another tier (like DBD::Gofer) looks like really messy in infrastructure plus it’s not certain who is going to maintain that module’s quality. I'd only recommend trying it after you set up a front-end proxy, tune your mod_perl configuration, and use any Oracle tools available to you. - Perrin
