BigWig: A better Erlang webtool (spawnfest entry)
This weekend, Steve, Hunter, Paul and I took part in Spawnfest, a 48-hour Erlang programming event.
erlang
A collection of 13 posts
Erlang rebar tutorial: generating releases and upgrades
During my experiments with rebar, I made a simple example app for testing upgrades and releases. This article will walk you through using rebar to create an application, lay it out properly, package and deploy it, and create and install...
Erlang/OTP releases: rebar, release_handler, .appup, etc
I’ve been building something in Erlang recently, provisionally called IRCCloud.com (mention this post if you request an invite!) - it’s an in-browser IRC client that stays connected for you all the time, so you never miss the conversation. You can...
Rewriting Playdar: C++ to Erlang, massive savings
I've heard many anecdotes and claims about how many lines of code are saved when you write in Erlang instead of [C++/other language]. I'm happy to report that I now have first-hand experience and some data to share.
Erlang talk at London Hackspace
Last night I gave an “Intro to Erlang” talk at a London Hackspace meetup. I did a quick audience survey first: About 75% did “web programming” (ruby,python,php,etc). Around 30% admitted to regularly using C/C++/Java or desktop/mobile app development. Less than...
Anti-RDBMS: A list of distributed key-value stores
Please Note: this was written January 2009 - see the comments for updates and additional information. A lot has changed since I wrote this.
Getting to know ejabberd and writing modules
I started poking around in the ejabberd source code to see what I could learn. I couldn’t find much in the way of high level documentation that talks about how the various bits of ejabberd talk to each other, so...
A Million-user Comet Application with Mochiweb, Part 3
In Part 1 and Part 2 of this series we built a comet application using mochiweb, and learned how to route messages to connected users. We managed to squeeze application memory down to 8KB per connection. We did ye olde...
A Million-user Comet Application with Mochiweb, Part 2
In Part 1, we built a (somewhat useless) mochiweb comet application that sent clients a message every 10 seconds. We tuned the Linux kernel, and built a tool to establish a lot of connections in order to test performance and...
A Million-user Comet Application with Mochiweb, Part 1
In this series I will detail what I found out empirically about how mochiweb performs with lots of open connections, and show how to build a comet application using mochiweb, where each mochiweb connection is registered with a router which...
On bulk loading data into Mnesia
Consider this a work-in-progress; I will update this post if I find a ‘better’ way to do fast bulk loading
Erlang libketama driver - Consistent Hashing
All the data I need from memcached is assigned to servers using a consistent hashing mechanism, implemented as libketama - a shared library written in C. We use a php extension to wrap this, and also have a pure java...
Reading Serialized PHP Objects from Erlang
I started writing some Erlang recently. The vast majority of data I need to access from Erlang resides in cached, serialized php objects. Here’s what I came up with to turn a serialized php object into a sort of nested...