MagLev is an alternative implementation of the Ruby programming language built on the GemStone/S virtual machine from GemTalk Systems.
Architecture
Maglev runs inside an image like Smalltalk, offering transparent object persistence[2][failed verification][3] to Ruby objects and classes. Object persistence is based on ACID transactions that allow multiple running instances to see a shared object graph. Maglev uses a process-based concurrency model, mapping Ruby threads to Smalltalk Processes[4][self-published source?], which are scheduled in the VM as green threads.
Ruby Compatibility
Maglev targets Ruby 1.8.7 and runs a significant number of RubySpec. It supports several C extensions including Nokogiri, JSON and bcrypt.
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