paxan

Moved to a proper Git repository.

rmurphey

What's wrong with Netmag's "Optimize your JavaScript" post

Update: The original post on Netmag has been updated since this was written.

I tweeted earlier that this should be retracted. Generally, these performance-related articles are essentially little more than linkbait -- there are perhaps an infinite number of things you should do to improve a page's performance before worrying about the purported perf hit of multiplication vs. division -- but this post went further than most in this genre: it offered patently inaccurate and misleading advice.

Here are a few examples, assembled by some people who actually know what they're talking about (largely Rick Waldron and Ben Alman, with some help from myself and several others from the place that shall be unnamed).

Things that are just plain wrong

notmatt

Polyglotconf intro to node.js

If you're interested in learning more in person, VanJS (@vanjs) often has node-related content.

And like Rob and Brock mentioned in the session, they're starting up the Vancouver Node Brigade (@NodeBrigade) for a more node-focused meetup.

Now, as promised, links from the session and some expanded notes. All questions, comments, and pull requests are most welcome.

Installation & Hello World

jasonmp85

// use this in a bookmarklet to make a button for this script:
// javascript:document.getElementsByTagName('head')[0].appendChild(document.createElement('script')).setAttribute('src','https://raw.github.com/gist/2379456/sum_hours.js')

(function(){var l=this,g,y=l.jQuery,p=l.$,o=l.jQuery=l.$=function(E,F){return new o.fn.init(E,F)},D=/^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,f=/^.[^:#\[\.,]*$/;o.fn=o.prototype={init:function(E,H){E=E||document;if(E.nodeType){this[0]=E;this.length=1;this.context=E;return this}if(typeof E==="string"){var G=D.exec(E);if(G&&(G[1]||!H)){if(G[1]){E=o.clean([G[1]],H)}else{var I=document.getElementById(G[3]);if(I&&I.id!=G[3]){return o().find(E)}var F=o(I||[]);F.context=document;F.selector=E;return F}}else{return o(H).find(E)}}else{if(o.isFunction(E)){return o(document).ready(E)}}if(E.selector&&E.context){this.selector=E.selector;this.context=E.context}return this.setArray(o.isArray(E)?E:o.makeArray(E))},selector:"",jquery:"1.3.2",size:function(){return this.length},get:function(E){return

erikh

#!/usr/bin/env sh

##
# This is script with usefull tips taken from:
#   https://github.com/mathiasbynens/dotfiles/blob/master/.osx
#
# install it:
#   curl -sL https://raw.github.com/gist/2108403/hack.sh | sh
#

nornagon

window.atom = atom = {}
atom.input = {
  _bindings: {}
  _down: {}
  _pressed: {}
  _released: []

  bind: (key, action) ->
    @_bindings[key] = action

shanejonas

# Heres how I've been working with arbitrary backbone events:
#
# Obviously in Backbone you can use events elsewhere as well, for
# more info see the docs here: http://documentcloud.github.com/backbone/

# useful for running this with node.. else browser this with the right includes.
# includes
if typeof window is 'undefined'
  # npm install -g backbone
  # gives you:

bmarini

# https://www.varnish-cache.org/docs/2.1/tutorial/vcl.html
# https://www.varnish-cache.org/trac/wiki/VCLExamples

# Summary
# 1. Varnish will poll the backend at /health_check to make sure it is
#    healthy. If the backend goes down, varnish will server stale content
#    from the cache for up to 1 hour.
# 2. Varnish will pass X-Forwarded-For headers through to the backend
# 3. Varnish will remove cookies from urls that match static content file
#    extensions (jpg, gif, ...)

jrauser

points_per_hour<-2000
layd_raw_transition<-
data.frame(timestamp=factor(c(rep(seq(0,11),points_per_hour),
                       rep(seq(12,23),points_per_hour))),
           latency=c(rgamma(12*points_per_hour,shape=3,scale=60),
                     rgamma(12*points_per_hour*0.9,shape=2,scale=60),
                     rgamma(12*points_per_hour*0.1,shape=8,scale=60)),
           type=(c(rep("before",12*points_per_hour),
                   rep("after",12*points_per_hour))))

jsermeno

# HAProxy config

mkdir /etc/haproxy
cat > /etc/haproxy/haproxy.cfg << EOF
global
  maxconn 4096

defaults
  mode http