We’re a big fan of open source here at Voxel, and have recently been expanding our support by donating hosting through our global VoxCAST CDN. For over a year now we’ve been mirroring Sourceforge on VoxCAST, hitting near-daily peaks of 300Mb/s.
Lately we’ve been working with Reed Loden @ Mozilla to set up a Mozilla mirror with VoxCAST, and it was up and running just in time for the Firefox 3.5 release.
Over the past 24 hours, we’ve served about 7+ TB out of our mirror, handling 7+ million requests.
I’m not exactly sure how they chose to send traffic our way, but we served nearly as much out of Europe as we did in the US, and a nice chunk out of Asia. For those interested, here’s a breakdown of the day by consolidated network locations we served Mozilla data out of:
- New York – 970k requests, 1TB
- Chicago – 400k requests, 500GB
- DC – 1M requests, 1TB
- San Jose – 1M requests, 1.1TB
- Amsterdam – 3M requests, 3TB
- Singapore – 800k requests, 500GB
Just before 5pm EDT, our mirror peaked around 4.5 Gb/s. The aggregated graph below is a good example of what can happen to a popular website with sudden traffic spikes:
Firefox 3.5 release day aggregate traffic graph for VoxCAST
You’ll notice a small dip early on as some config changes briefly overloaded the single-server origin the VoxCAST mirror was sourcing from, but things quickly cached again and kept on chugging. I’m not sure if that’s what caused the early slowdowns reported elsewhere, but once content was served from VoxCAST again, it was fast and limited only by the decisions of the Mozilla mirror redirector.
VoxCAST may make spiking from 1Gb/s to 4.5Gb/s look easy, but having the capacity to handle that can be the difference between getting a blank screen and letting me max out my Singapore apartment’s DSL line while downloading Firefox 3.5 on release day!
![Reblog this post [with Zemanta]](http://img.zemanta.com/reblog_e.png?x-id=4dd57b79-b4b7-4ccd-a070-ae2fb610c574)
Posted in General Posts | 4 Comments »
Awesome chart. And a HUGE thank you for contributing to Mozilla in such an important way. We bust our butts to make Firefox really good, but without amazing volunteers like you guys, we wouldn’t be able to put it in the hands of our 300 million users.
- A
Good jobs Guys.
thanks for perfect mozilla service..
[...] got setup just in time for the Firefox 3.5 release, and in the four months since, we’ve served more than 1.3 petabytes of updates, installers, [...]