-----Original Message----- From: John Cheng <[email protected]> Date: Fri, 24 Dec 2010 18:49:54 To: Leif Hedstrom<[email protected]> Reply-To: [email protected] Cc: <[email protected]> Subject: Re: Usage of Traffic Server with a CDN
>>> ----- "John Cheng"<[email protected]> wrote: >>> >>>> I am exploring the role of ATS in a high availability, high traffic >>>> web site. And I would like to ask if it make sense to use ATS for the >>>> purpose of "scalability" if you are already using a CDN. >>> >>> Y! uses it for their CDNs. If it's good enough for them.. >>> >>> Anyway, a CDN can be a number of things. What is it for you? >> >> Hi Igor. CDN for me is edge delivery, for example Akamai edge >> platform. Static contents, particularly images and videos, can be sent >> to users from Akamai's nearest servers. In this case, most contents >> should be served from Akamai and I wonder if Apache Traffic Server has >> a significant role in reducing load on the web (Apache Httpd) servers. > > As Igor pointed out, Yahoo! uses a version of Traffic Server that is very > similar to ATS v2.0.1 (which is much worse than v2.1.4 ;). Last I heard, > they were delivering in the order of 300,000 RPS and 30-40GBps out of ~100 > servers (most of which are idle, they are deployed at such large quantity > primarily to get edge presence around the world). If anyone from Yahoo! is > around, please correct me where I'm wrong on these numbers. > > -- Leif I see what you mean, and I think that makes sense to me. In my specific scenario, I am going to depend on Akamai for edge delivery and caching. I do not expect much hits to the infrastructure because Akamai will presumably cache all the static contents. So does it makes to have ATS cache static contents for Akamai to consume? I expect to use Apache Httpd in my architecture to serve static contents, as well as proxy and mod_pagespeed, but I am not sure if ATS makes sense for me if I plan on using both Apache Httpd and Akamai.
