Restangular can make use of $http's built-in response cache.

# Cache response for single request
Restangular.one('accounts', 123).withHttpConfig({ cache: true }).get();

# Cache responses for all requests (be careful with that, you might work with stale data)
RestangularProvider.setDefaultHttpFields({ cache: true });

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

• Prevents you from data breaches and liability risks
• Upgrade at your own pace
• Works with modern Rubies

Read more Show archive.org snapshot

To invalidate cached responses e.g. on a state change in UI Router, you can do

@app.run ['$rootScope', '$cacheFactory', ($rootScope, $cacheFactory) ->
  $rootScope.$on '$stateChangeSuccess', ->
    $cacheFactory.get('$http').removeAll()
]

Alternative approaches might involve a custom $cacheFactory instance for your Restangular resources where you could expire cached responses whenever nescessary.