Everybody last time (since last RubyConf) are talking about MagLev. What the MagLev generally is ?

MagLev is a Ruby VM based on the GemStone S64 VM, which runs Smalltalk (my favorit last time). The Smalltalk VM has been extended with special byte codes to make it Ruby (also my favorit) compatible. GemStone’s Smalltalk VM has been used for over 20 years in sectors such as real time financial markets and the worldwide shipping industry. It as a mature, fast, stable, distributed, and transactional data store which can hold over a trillion objects or 17PB (Petabytes) worth of information. The goal of the MagLev project is to bring this distributed object technology to the world of Ruby on Rails.

Here is a vide from RailsConf:

MagLev presentation at RailsConf 2008 - part 1 from Monty Williams on Vimeo.

Other interesting resources:

Chad Fowler about MagLev
MagLev, JRuby, And Rubinius: Who Will Win?
Avi Bryant - MagLev Recap