A Middleman fragment caching extension like Rails.
When we need build many pages, fragment caching can decrease the build time.
Add this line on Gemfile:
gem 'middleman-fragment-caching', '~> 0.0.1'
Run bundler:
$ bundle
Activate the extension, adding the folling code on config.rb
activate :middleman_fragment_caching
On your app views:
<% fragment_cache('my_key') do %>
... some expensive content
<% end %>
<% fragment_cache('my_key', 'some_version', 123) do %>
... other expensive content
<% end %>
Clear all cache:
$ rm -r tmp/cache