So I’ll try to answer this for you … have all of them…
Percent of bandwidth saved… really depends on your network, traffic levels, subscriber breakdown (residential vs business), connectivity etc… there’s no magic answer but if you had all three systems you listed then it should hit a minimum of 50%. Upstream amount used is less than you used before :) Akamai and Google both “fill on demand” so they are generally speaking very linear in upstream vs content served out of them – over time that difference is quite noticeable. Netflix uses a “prefill” mechanism which is typically 1.5Gb/s for 8-10 hours per day off hours so if you’re not serving at least 2-3Gb/s of Netflix traffic it’s not remotely worthwhile. Also consider the space/power that some of these servers require – it can add up in a hurry. Generally speaking I wouldn’t deploy any of their solutions until you have 1Gb/s on Akamai minimum, 3 Gb/s minimum on Google/Youtube, and 5 Gb/s minimum on Netflix… assuming you have lots of space/power. These are just rough guidelines – everyone’s situation is different. Netflix servers are the heaviest density servers and depending on traffic levels then Akamai is next in density but you will only see those boxes for Akamai in very high traffic environments – their “stock” servers I think do about 700-800Mb/s per physical server (usually a cluster of 3 to start), while their more dense servers do 10Gb/s+ per box. Google servers typically go up to a max of 3.1-3.2 Gb/s per server (usually a cluster of 3 to start as well). Netflix servers (latest generation “C”) have 2x10G interfaces and can serve up to around 15Gb/s each – they usually will start you with 2 of these servers but not always. The ASN that fills the caches varies all over the place and is totally dependent on your network and upstreams. Peering links with these providers are heavily used when possible. Let me know if this helps… Paul From: Af [mailto:[email protected]] On Behalf Of Mike Hammett Sent: Sunday, May 31, 2015 10:10 AM To: Animal Farm Subject: [AFMUG] Caching Boxes For those of you with caching boxes from Akamai, Gogole, NetFlix, etc. could you let me know: * Percent of bandwidth saved (IE, 10 gigs of downstream traffic and 1 gig of upstream traffic would be 90% saved) * Upstream amount used * ASN the upstream comes from * Traceroute to the upstream (to see where it actually comes from) On or off list for any of the information above is fine. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com
