Arabesque, is a mail box (Queue) written in ruby with a backup from the super hero BerkeleyD. Arabesque tries to solve some of the existing solutions for applications written in ruby as:

• Scaling to Mutliple CPUs
• Garbage Collection
• Performance and Reliability of Messaging Systems
• And of course, Its not about the language, we can do great things with Ruby !! ;)

Download Arabesque at:

   git://github.com/espace/arabesque.git

You can check out the latest source from git:

   git clone git://github.com/espace/arabesque.git

Please First, Download BerkeleyDB and its ruby-wrapper.

Pros
Very fast
Much easier to setup and use
Less moving parts

Cons
Does not scale to multiple physical servers
If you do that you lose ordering (might not be an issue)

  require 'queues_manager.rb'
  # Creating the Manager
  @queues_manager = Arabesque::QueuesManager.new("data_folder_path")

  # Adding a Queue
  @queues_manager.add_queue('queue_name') 

  # Pushig to Queue
  @queues_manager.push_to_queue('queue_name','message')

  # Poping from Queue
  @queues_manager.pop_from_queue('queue_name')  

Pros
Allows multiple front end servers to use the same queue
Allows the queue to scale up or scale out independently from the front end

Cons
More moving parts
Added latencies of TCP/HTTP communication overhead
Loses strict queue ordering in scale out scenarios

Running the Server
ruby arabesque-server.rb

Adding A queue
curl http://SERVER_URL/queues -d “name=queue_name” (POST Request)

Pushing to Queue
curl http://SERVER_URL/queues/queue_name/ -d “message=my_message” (POST Request)

Poping from Queue
curl http://SERVER_URL/queues/queue_name/ (GET Request)

These numbers are recorded on a machine wih AMD Turion X2 ultra 64-bit 2.00 GHZ Processor, 4 GB RAM, 5400 RPM Hard drive

Single Arabesque Process ( 1K message size) 5600.94 request/sec

Dual Arabesque Process (1K message size) 8577.74 request/sec

Arabesque is in the early begining, Testing enhancing server implementation are the first priorities now, sure contributions and reporting bugs are welcomed. More benchmarks will be avaliable soon.

Contribution By eSpace.