…EventMachine provide a better model for building network servers. Technologies like XMPP and the WebSocket API that's part of HTML5 are also going to be key in the next generation of real-time, connected web and mobile applications.
Thank you Paul. In case you have any queries and/or questions, kindly post your questions here (as comments to this blog post) and Paul would be glad to answer.
- Ruby on Rails, London - The Blog by Dynamic50: Installing a monitored Mongodb, Ruby 1.9, Nginx stack with Passenger on Ubuntu Linux
- Ruby Quicktips: Making sure that an options Hash contains certain keys only
- New Relic: Ruby developers: Get visbility into Resque, Authlogic, Paperclip and Camping with New Relic's rpm_contrib gem
- the evolving ultrasaurus: strong statements about testing
- Ruby Inside: Interesting Ruby Tidbits That Don't Need Separate Posts #30
- Giles Bowkett: Help Wanted: Rails Volunteer Work
…share with you a tutorial-like post explaining step by step how to build a simple application with a XMPP interface. The complete listing is also available on bitbucket
The application
I couldn't find something better than writing a xmpp weather bot. You type the name of a city and the bot answers with the current temperature and forecast information using the Google Weather API. Simple enough for this tutorial.
Try it first if you want
Open your XMPP compatible IM and …
- Luigi Montanez: Real Time Disclosure, Technically Speaking
- Vineet Gupta | Computer Programmer: Notes on XMPP Part I - Fundamentals
- igvita.com: Consuming XMPP PubSub in Ruby
- Ruby, Javascript, Erlang blog: Snakes, Gems & Coffee: Google Wave is not the answer, XMPP is!
- High Scalability: Hot Holiday Scalability Links for 2009
- Edd Dumbill's Weblog: Behind the Times: My OSCON 2008 picks
Cover a variety of subjects. Our talks on cutting-edge technologies like MongoDB and XMPP have been great, but not every talk needs to be software-related, or even technical. Two of our most popular presentations have been regarding legal issues that affect software companies and tips on how to give great presentations.
Meet on a consistent basis. We hold our meetings on the second Thursday of every month (except when a record-setting blizzard makes travel impossible). This makes planning …
- format internet:: Speaking at EuRuKo 2009
- RubyLearning Blog: RPCFN: Fair Distribution (#6)
…XMPP. AMQP is the lighter one which uses a binary format, while XMPP uses XML. AMQP means Advanced Message Queuing Protocol, it is an open standard application layer protocol for Message Oriented Middleware.
To use AMQP in Ruby, you can use either the carrot gem (a synchronous AMQP client without using EventMachine) or the amqp gem (a simple AMQP driver for Ruby using EventMachine). You can install them both at once with $ sudo gem install …
- igvita.com: Advanced Messaging & Routing with AMQP
- Article RSS Feed: August 2009 Meeting
- railzite: Getting started with AMQP and Ruby
- Brightbox Blog: Queues and Callbacks
- Open Sourcery: Looking beyond daemon-kit 0.2
- High Scalability: Hot Holiday Scalability Links for 2009
XMPP
Unlike HTTP, XMPP ( eXtensible Messaging and Presence Protocol) was designed for real time applications and asynchronous communication. You've used XMPP if you've used Google Talk for chatting, or other Jabber IM services. At the simplest level, XMPP is a way to send instant messages around the Internet, with support for extending the definition of those messages to suit your needs. XMPP also defines a publish-subscribe extension, which would …
- Litany Against Fear: Messaging with Ruby on Rails Notes
- Vineet Gupta | Computer Programmer: Activity Streams 101
- Bamboo Blog: Brain Dump of Real Time Web(RTW) and WebSocket
- Open Sourcery: Looking beyond daemon-kit 0.2
- Ruby, Javascript, Erlang blog: Snakes, Gems & Coffee: Google Wave is not the answer, XMPP is!
- igvita.com: HTTP PubSub: Webhooks & PubSubHubbub
…speakers will be myself ( WebSocket and node.js) and Luis Cipriani ( XMPP, BOSH and Strophe) who is going to be visiting New Bamboo from Brazil. We are also hoping to to do a bit of hacking session, so bring your laptop!!
It's our first attempt to provide our office for such an event and we are very excited to meet other people who are interested in node.js
For more detail and registration, please visit London JavaScript Meetup Group page.
- Ruby Inside: 7 Top Ruby and Rails Jobs for January 2010
- techno weenie: Node.js For My Tiny Ruby Brain: Keeping Promises
- PaulBarry.com: Node.js Presentation
XMPP
Unlike Comet, XMPP stands for Extensible Messaging and Presence Protocol and it is a standards based protocol.
The main feature is "Presence" which takes care of authentication, and shows whether participants are online or not. You have already seen examples of XMPP use on web via GTalk and Google Wave.
XMPP Standards Foundation also defined "Bidirectional-streams Over Synchronous HTTP"(BOSH) which can be used to transport XMPP over …
- Bamboo Blog: Living on the edge of the WebSocket protocol
- igvita.com: Ruby & WebSockets: TCP for the Browser
- has_many :bugs, :through => :rails - Home: Websockets made easy with Cramp
…workitem table in some DB), a process listening somewhere else and reachable via a message queue ( XMPP, AMQP, Stomp, ...).
As IO operations depend on things outside of the engine, the dispatch operation was usually done in a new thread, so that, meanwhile, the engine's workqueue could go on with its work (and the other process instances).
When farming out work to ‘real' participants with wide concurrency, as the engine is spawning a thread for each dispatch, it gets crowded. …
- processi: it's barley a task manager
- Ruby News: Ruby 1.8.6 maintenance moved to Engine Yard
- Litany Against Fear: 5 Great Talks Notes
- ricroberts: Blink #1 - The first in a series of Link-Blogging posts
- Viget Extend : The Development Lab: Getting Started with MongoDB & MongoMapper
- Riding Rails - home: Community Highlights
…winner. Some honorable mentions: Django, Redis, Clojure, XMPP, Node.js, AMQP, Rails, jQuery, Solr, Hadoop.
Why I think Mongo is to Databases what Rails was to Frameworks . We have been amazed at how much code we cut out of Harmony with the switch from MySQL to Mongo.
A Deluge of Data Shapes a New Era in Computing . Dr. Gray called the shift a "fourth paradigm." The first three paradigms were experimental, theoretical and, …
- Giles Bowkett: Mongo
Getting off the ground with XMPP
Without a good toolkit XMPP can be a gnarly protocol to get started with - Pidgin IM client has some great tools for spying on the exchange, but monitoring pages of XML scroll by can only get you so far. Thankfully, Seth Fitzsimmons has built switchboard ("curl for XMPP"), which offers a powerful command line tool to greatly simplify the process. Make sure to read the full tutorial , or jump right into it by testing …
- igvita.com: Ruby & WebSockets: TCP for the Browser
- igvita.com: Scalable Work Queues with Beanstalk
- Vineet Gupta | Computer Programmer: Notes on XMPP Part I - Fundamentals
- Edd Dumbill's Weblog: Behind the Times: Why Identi.ca is important
- Luigi Montanez: Respect the Browser - Lessons from JSConf 2009
- How Software is Built: Interview with Con Zymari - CEO Cybersource