resource_pool

This is a generic connection pool / resource pool implementation. The initial code is largely taken from ‘ThreadedConnectionPool` class from `Sequel` gem and adapted for more general use.

Install

gem install resource_pool

Usage

require 'resource_pool'

memcache_pool = ResourcePool.new({
    :max_size => 10,                  # Max amount of resource allowed to create. Default is 4
    :pool_timeout => 4,               # Seconds to wait when aquiring a free resource.
                                      # Set to 0 to skip waiting. Default is 2
    :pool_sleep_time => 0.1,          # Seconds to wait for retry aquiring resource. Default is 0.001
    :delete_proc => lambda{ |res| }   # a proc used to close / delete the resource. Optional
}) do
  # create your resource here.
  # A resource can be anything such as TCP, persistent HTTP, database, nosql
  # Note: must return the instantiated resource
  Memcache.new MemCache.new 'host:11211'
end

# using defaults for redis pool
redis_pool = ResourcePool.new do
  Redis.new(:host => "10.0.1.1", :port => 6380)
end

# Use the resource:
threads = []
50.times do
  threads <<Thread.new do
    # there are 4 redis connections
    # can now be shared safely with 50 threads
    redis_pool.hold do |redis|
      redis.set "foo", "bar"
      redis.get "foo"
    end
  end
end

threads.each(&:join)

Contributing to resource_pool

Check out the latest master to make sure the feature hasn’t been implemented or the bug hasn’t been fixed yet
Check out the issue tracker to make sure someone already hasn’t requested it and/or contributed it
Fork the project
Start a feature/bugfix branch
Commit and push until you are happy with your contribution
Make sure to add tests for it. This is important so I don’t break it in a future version unintentionally.
Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

resource_pool

Install

Usage

Contributing to resource_pool

Copyright