Ruby on Share what you know

Neo4j for Ruby on Rails

Fri, 05 Nov 2010 12:00:00 +0000

“Neo4j is a graph database. It is an embedded, disk-based, fully transactional Java persistence engine that stores data structured in graphs rather than in tables. A graph (mathematical lingo for a network) is a flexible data structure that allows a more agile and rapid style of development.”

Neo4j allows you to map objects to nodes and relations, that is a more natural fit than mapping them to relational tables. Modeling with elements of a graph is substantially faster for semistructured data (Recall that semistructured data is data that has few mandatory but many optional attributes).

Cassandra and Ruby

Fri, 27 Nov 2009 17:30:00 +0000

I been speaking about Apache Cassandra database at the Spanish Rails Confenrence 2009.

The title of my talk was Cassandra DB: ¿Qué tienen Facebook, Twitter y Digg en común?

Here are some photos of the talk:

Euruko 2009 is over

Mon, 11 May 2009 12:00:00 +0000

Euruko 2009 conference in Barcelona, Spain was excelent! The venue was really good. Everything was very well organized by the great people of the SRUG.

My favorite talks were:

Javier Ramirez with Fun with ruby (and without r***s) Program your own games with gosu
Joshua Sierles with Automate Everything: Cooking with Chef
Aslak Hellesøy with Quality code with Cucumber

Here are some photos I took:

The rest of the photos can be seen in flickr, just search for the tag #euruko2009

Rails Scalability

Fri, 23 Nov 2007 12:00:00 +0000

Intro

I escaped London for a few days to go to Conferencia Rails 2007 in Madrid. There I gave a talk about much ranted Rails Scalability.

The title of the talk in spanish was “Escalabilidad y las cosas de las que nadie se atrevio a hablar”.

Summary of the talk:

Architecture and typical Rails deployment configurations.
Use of Nginx as a static assets server.
Mongrel and Evented Mongrel.
Multithreaded image Uploads with mongrel and/or merb (instead of attatchment_fu)
Activerecord optimizations (hacks, active_record_context plugin)
Caches, pasive expirations. Cache observing daemons.
Configuration and monitoring of a production Server. (monit, munin tools)

Here is the video of the talk, and of course, the slides.