Traceroute from my computer gives me timeout from hop 1. And facebook is extremely show from the 5-10 computers I have tried around the country.
On Jan 7, 1:35 am, pub crawler <[email protected]> wrote: > I would believe Facebook does have geographic distribution of their > memcached instances as well as all other app and web servers. > > Have you tried running a traceroute to their servers to see if there > is some identifiable bottleneck between you and their servers? > > In our instance Facebook is 14 hops away on a fast cable modem on the > US East Coast. > > Hops 11-14 balloon in response times to over 100ms average. If you > get same route or end point hops with high latency this might be the > issue: > > 11 FACEBOOK-INC.TenGigabitEthernet6-2.ar1.PAO2.gblx.net > (67.17.162.38) 95.380 ms 95.452 ms 110.825 ms > 12 ae0.bb01.pao1.tfbnw.net (74.119.76.132) 111.174 ms 111.260 ms 111.108 > ms > 13 ae5.br02.snc1.tfbnw.net (74.119.76.141) 110.847 ms > ae5.br01.snc1.tfbnw.net (74.119.76.139) 110.763 ms > ae5.br02.snc1.tfbnw.net (74.119.76.141) 110.832 ms > 14 eth-17-17.csw01b.snc2.tfbnw.net (204.15.23.197) 116.560 ms > eth-18-1.csw01b.snc2.tfbnw.net (204.15.21.125) 116.446 ms 116.315 ms > > On Wed, Jan 6, 2010 at 7:02 PM, Martin Bay <[email protected]> wrote: > > How come sites like facebook does not place memcached servers around > > the world with a live updated copy of their primary memcached servers? > > From Europe the facebook website is EXTREMELY slow.
