Streams are Awesome - (Node.js) TimesOpen Sep 2012

Streams are awesome.@sh1mmer

Tom Hughes-Croucher @sh1mmer

Scalable Server-Side Code with JavaScript Node Up and Running Tom Hughes-Croucher http://ofps.oreilly.com/titles/9781449398583/http://shop.oreilly.com/product/0636920015956.do

Client → ServerServer → DB Computation Computation@sh1mmer

Non event-driven frontend@sh1mmer

@sh1mmer

Server@sh1mmer

Request@sh1mmer

@sh1mmer

Event-driven frontend@sh1mmer

Place- holder@sh1mmer

@sh1mmer

Shared WorkResources@sh1mmer

Memory operations@sh1mmer

var x = "I am a string" ~1ns Running 1 instruction 2ns Data from l1 cpu cache 5ns Data from l2 cpu cache 80ns Data from ram@sh1mmer

@sh1mmer

Mobile data latency@sh1mmer

@sh1mmer

100 Blue Whales Cat@sh1mmer

Node.js Streams@sh1mmer

Streams• Readable • Pause • Resume • data event• Writable • Write• Pipe

Event Loop Fail node.cc add-ons v8 libuv libev iocp

nextTick Event Loop FailnextTick Run stuff TCP Conn node.cc FS Read add-ons v8 TCP Conn v8 func libuv v8 TCP func Conn libev iocp v8 FS func Read FS Read

stream.pause()@sh1mmer

nextTick Event Loop FailnextTick stream.pause() TCP Conn node.cc FS Read add-ons v8 TCP Conn v8 func libuv v8 TCP func Conn libev iocp v8 FS func Read FS Read

New Streams• Writable • Same (hooray!)• Readable • Conﬁgure buffer waterline • readable event • read(len) -> returns data• Pipe • Doesnt mix with direct access

Node.js Domains@sh1mmer

Questions!@sh1mmer

http://localhost	217
https://twitter.com	8
http://faxo.com	3
http://www.onlydoo.com	3
http://fr.slideshare.net	2
http://twitter.com	2
http://www.linkedin.com	2
http://novaxarxabusos.omitsis.com	1
http://flashattackcrew.blogspot.com	1
http://flashattackcrew.blogspot.mx	1
http://www.caucapino4u.com	1
http://kred.com	1
https://si0.twimg.com	1

Streams are Awesome - (Node.js) TimesOpen Sep 2012

by Tom Hughes-Croucher on Sep 14, 2012

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Streams are Awesome - (Node.js) TimesOpen Sep 2012 Presentation Transcript