module Sprockets::Caching

def cache_set(key, value)

cache interfaces.
Low level cache setter for `key`. Checks a number of supported
def cache_set(key, value)
  # `Cache#set(key, value)` for Memcache
  if cache.respond_to?(:set)
    cache.set(key, value)
  # `Cache#[key]=value` so `Hash` can be used
  elsif cache.respond_to?(:[]=)
    cache[key] = value
  # `Cache#write(key, value)` for `ActiveSupport::Cache` support
  elsif cache.respond_to?(:write)
    cache.write(key, value)
  end
  value
end