trevnorris

Notes:

• Text in [[ ]] are the internal libuv function call.
• Text in {{ }} are the Node functions that are affected.
• Text in ( ) are notes about what is happening.
• While the Windows event loop has minor variations, I don't believe any of those affect Node.

---

On process.nextTick():

totherik

Per https://code.google.com/p/v8/codesearch#v8/trunk/src/runtime.cc


%CreateSymbol
%CreatePrivateSymbol
%CreateGlobalPrivateSymbol
%NewSymbolWrapper
%SymbolDescription
%SymbolRegistry
%SymbolIsPrivate

jasonkuhrt

'use strict';

var tcp = require('net');



var s1 = tcp.createServer().listen(9000);
var s2 = tcp.createServer().listen(9001);
var s3 = tcp.createServer().listen(9002);

trevnorris

build

Clone and build Node for analysis:

$ git clone https://github.com/joyent/node.git
$ cd node
$ export GYP_DEFINES="v8_enable_disassembler=1"
$ ./configure
$ make -j4

jedi4ever

Clustering: The basics

The trick? pass the file descriptor from a parent process and have the server.listen reuse that descriptor. So multiprocess in their own memory space (but with ENV shared usually)

It does not balance, it leaves it to the kernel.

In the last nodejs > 0.8 there is a cluster module (functional although marked experimental)

• http://nodejs.org/api/cluster.html
• Simple cluster example:

joa

function archiveInbox() {
  var query = 'label:inbox is:read older_than:28d -label:unanswered -label:unread';
  var batchSize = 100;
  
  while(GmailApp.search(query, 0, 1).length == 1) {
    GmailApp.moveThreadsToArchive(GmailApp.search(query, 0, batchSize));
  }
}

adamwiggins

Make it real

Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discuss around concrete examples, not hand-waving abstractions. Don't say you did something, provide a URL that proves it.

Ship it

Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.

Do it with style

benr

vagrant box add smartos http://cuddletech.com/tmp/smartos-latest.box
mkdir smartos && cd smartos
vagrant init smartos
vagrant up

vagrant ssh

adamvr

node_modules

LeaVerou

/**
 * Switch-style checkboxes.
 * Inspired by Espresso’s “Tools” switch
 */

input[type="checkbox"]:not(:checked), 
input[type="checkbox"]:checked { /* :checked here acting as a filter for older browsers */
	position: absolute;
	opacity: 0;
}