Chris Wanstrath <[email protected]> wrote: > Just wanted to say that GitHub has been running on Unicorn for about > two weeks now. In that time it's successfully served millions of pages > and has survived two separate DDoS attacks.
Wow, this is wonderful news! > Here's the config file we currently use (complete with a fun hack to > gracefully kill the old master when a new worker pool is ready): > > http://gist.github.com/189623 Great use of the before/after_fork hooks One possible issue is a race condition in the before_fork hook, so I'd put a rescue to protect the File.read in the before_fork: old master new master ----------------------------------------------------------------------- before_fork for worker=0 File.exist?(old_pid) => true Process.kill :QUIT, File.read(old_pid).to_i before_fork for worker=1 File.exist?(old_pid) => true processes :QUIT unlinks old_pid # the File.read will raise Errno::ENOENT: Process.kill :QUIT, File.read(old_pid).to_i > (Tom's thread with the `backlog` fix concerns our new servers, which > aren't yet in production.) > > I plan to do a writeup on our transition from mongrel_cluster to > Unicorn in the near future, in case others are interested. I'll post > the link here when it's available. Looking forward to it! > Also: I'm keeping a mirror of the project at > http://github.com/defunkt/unicorn for any other GH users who want to > watch updates in their generalized feed. I update it semi-regularly. Cool, more exposure's always good. Small nit: "Eric Wong's Unicorn" doesn't sound quite right... While I am the benevolent dictator for now, I do welcome contributions. I could not have have built it without standing on the shoulders of Mongrel and the existence of Rack and nginx. Personally, I try to keep a low public profile and it's always been an weird balancing act trying to get people to use my work at the same time... > Long live fork(2)! And thanks again for the project. :) -- Eric Wong _______________________________________________ mongrel-unicorn mailing list [email protected] http://rubyforge.org/mailman/listinfo/mongrel-unicorn
