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Writing Prefork Workers / Servers

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Kazuho Oku
Kazuho Oku
Technology
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Writing Prefork Workers / Servers Cybozu Labs, Inc. Kazuho Oku
Job workers: the application area ,[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Job workers: prefork vs. event-driven ,[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Job Workers: prefork vs. event-driven (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Job Workers: prefork vs. event-driven (3) ,[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::ForkManager – the good old way ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::ForkManager – the problem ,[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Prefork – a signal-savvy manager ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Prefork – writing a Gearman worker ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Prefork – writing a prefork server ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Prefork – advanced topics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Prefork – graceful reconfiguration ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Prefork – dynamic scaling ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Hot deployment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Old techniques to restart a webapp. server ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Old techniques to restart a webapp. server (2) ,[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
The restart method of Server::Starter ,[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers listen spawn app. servers SIGHUP accept app. logic fork & exec accept app. logic SIGTERM accept app. logic fork & exec
Server::Starter – no downtime ,[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers listen spawn app. servers SIGHUP accept app. logic fork & exec accept app. logic SIGTERM accept app. logic fork & exec
Server::Starter – no resource leaks ,[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers listen spawn app. servers SIGHUP accept app. logic fork & exec accept app. logic SIGTERM accept app. logic fork & exec
Server::Starter – fail safe ,[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers listen spawn app. servers SIGHUP accept app. logic fork & exec accept app. logic SIGTERM accept app. logic fork & exec
Server::Starter – the code ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Server::Starter – integration w. daemontools ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Monitoring the workers / servers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Scoreboard – the caveats ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Scoreboard – under the hood ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Scoreboard – monitored process ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Scoreboard – integrating with P::Prefork ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Scoreboard – monitoring process ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Scoreboard – monitoring by HTTP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Parallel::Scoreboard – monitoring in HTTP (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers
[object Object],Oct 15 2010 Writing Prefork Workers / Servers
Summary ,[object Object],[object Object],[object Object],Oct 15 2010 Writing Prefork Workers / Servers

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