Capistrano Local Precompile

If your Rails apps are anything like mine, one of the slowest parts of your deployment is waiting for asset pipeline precompilation. It's sometimes so slow, it's painful. So I went searching for some solutions. turbo-sprockets helped, but it's not a silver bullet. This gem isn't a silver bullet either, but it can help. Capistrano Local Precompile takes a different approach. It builds your assets locally and rsync's them to your web server(s).

Usage

Add capistrano-local-precompile to your Gemfile:

group :development do
  # Capistrano v2 should use '~> 0.0.5'
  # Capistrano v3 should use '~> 1.0.0'
  # Capistrano v3.8+ should use '~> 1.2.0'
  gem 'capistrano-local-precompile', '~> 1.2.0', require: false
end

Then add the following line to your Capfile:

require 'capistrano/local_precompile'

Remove the following line from your Capfile:

require 'capistrano/rails/assets'

Here's the full set of configurable options:

set :precompile_env             # default: fetch(:rails_env) || 'production'
set :assets_dir                 # default: "public/assets"
set :rsync_cmd                  # default: "rsync -av --delete"

Capistrano supports dry run mode. In that case the rsync command will not actually be run but only shown in stdout:

cap production deploy --dry-run

Acknowledgement

This gem is derived from gists by uhlenbrock and keighl.

Contributing

Pull requests welcome: fork, make a topic branch, commit (squash when possible) with tests and I'll happily consider.