trident

Trident

A ruby gem for managing pools of forked workers

Installation

Add this line to your application's Gemfile:

gem 'trident'

And then execute:

$ bundle

Or install it yourself as:

$ gem install trident

Usage

After installing the gem, use the 'trident' binary to generate an example configuration file:

trident --generate-config > config/trident.yml

Edit the file with your desired setup, then run trident to launch all your worker pools

See other command line options with

trident --help

Orphaned workers

The ability to track pool processes across a restart - allows a restart to spin up new processes as old ones die off gracefully.

Limitations - It will treat any process that has the same pid from a previous pool as part of the orphaned processes if the process can be signalled from the pool process. To get around this you run the pool as a different user, which will prevent the pool from being able to signal the process.

TODO

• Add support for reloading the trident config with a HUP signal
• Add support in yml for specifying process limits (memory especially)
• Add support for killing off orphans/processes that have been running for an excessively (configurable) long time.