MasterLock is a Ruby library for interprocess locking using Redis. Critical sections of code can be wrapped in a MasterLock block that ensures only one thread will run the code at a time. The locks are resilient to process failures by expiring after the thread obtaining them dies.
Add this line to your application's Gemfile:
gem 'master_lock'
And then execute:
$ bundle
Or install it yourself as:
$ gem install master_lock
def perform_safe_operation
MasterLock.synchronize("perform_safe_operation") do
# Code executes within locked context
end
end
# Call MasterLock.start when your application boots up.
# This starts a background thread to prevent locks from expiring.
MasterLock.start
See documentation for advanced usage.
After checking out the repo, run bin/setup
to install dependencies. Then, run rake spec
to run the tests. You can also run bin/console
for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install
. To release a new version, update the version number in version.rb
, and then run bundle exec rake release
, which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/coinbase/master_lock.
The gem is available as open source under the terms of the MIT License.