Rails 3 Speeds up assets precompile time by only recompiling changed assets

Speeds up assets precompile time by only recompiling changed assets, based on a hash of their source files, just by adding a small gem ;)

group :assets do
  ...
  gem 'turbo-sprockets-rails3'
end

Run bundle to install the gem, and you’re done!

Test it out by running rake assets:precompile. When it’s finished, you should see a new file at public/assets/sources_manifest.yml, which includes the source fingerprints for your assets. Go on, run rake assets:precompile again, and it should be a whole lot faster than before.

Removing Expired Assets
You can configure the expiry time by setting config.assets.expire_after in config/environments/production.rb. An expiry time of 2 weeks could be configured with the following code:

config.assets.expire_after 2.weeks

This post is basically a short version of readme file of actual gem. Please check the readme file for more updates.

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