[Node] Multiprocessing and runs continuously

Multiprocessing and runs continuously 2011-11-19 kumatch / Yosuke Kumakura11 11 19

• Yosuke Kumakura • @kumatch • Feedtailor inc.11 11 19

Agenda • Multiprocessing • Continue to run a script11 11 19

Today’s modules • Cluster (for Node 0.6) • forever11 11 19

Cluster • Includes version 0.5.10 • committed on Oct. 12, 2011 • adds CLI option ﬁrst. • Shift to module (Oct. 27, 2011) • removed CLI option. • Bump v 0.6.0 (Nov. 4, 2011)11 11 19

Worker process Network ports Worker process Master process11 11 19

Cluster APIs • fork() • isMaster • isWorker • “death” event for worker die11 11 19

Cluster usage • cluster.isMaster • cluster.fork() • cluster.isWorker • ex. http.Server()11 11 19

Cluster usage • Cluster worker is Child Process • using child_process.fork() • Built-in messaging channel11 11 19

Cluster for Node 0.4 • http://learnboost.github.com/cluster/11 11 19

forever • https://github.com/nodejitsu/forever • Run a script as a daemon • CLI tool (and module instance)11 11 19

$ [sudo] npm install -g forever $ forever start app.js11 11 19

forever daemon actions • start • stop • restart • list • and more...11 11 19

Node 0.6 + forever 0.7.2 = unstoppable !!! • start is available • list, stop and etc. don’t work11 11 19

[Node] Multiprocessing and runs continuously

by kumatch kumatch on Nov 19, 2011

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[Node] Multiprocessing and runs continuously — Presentation Transcript