forked from lostisland/faraday_middleware
Caching
Mislav Marohnić edited this page Jan 24, 2012
·
1 revision
FaradayMiddleware::Caching can be configured with a cache store that
responds to read
, write
and fetch
, such as one of
ActiveSupport::Cache stores.
Example use:
conn.response :caching, :ignore_params => %w[access_token] do
cache_dir = File.join(ENV['TMPDIR'], 'cache')
ActiveSupport::Cache::FileStore.new cache_dir, :namespace => 'my_namespace',
:expires_in => 3600 # one hour
end
In the above example, the return value of the block represents the cache store that the middleware will use. It's configured to cache each GET response for 1 hour.
FaradayMiddleware::RackCompatible can be used to mount rack-cache to the middleware stack in order to perform caching per HTTP spec.
conn.use FaradayMiddleware::RackCompatible, Rack::Cache::Context,
:metastore => "file:#{cache_dir}/rack/meta",
:entitystore => "file:#{cache_dir}/rack/body",
In the above example, the stack is configured to cache successful responses to disk according to HTTP freshness/expiration information, and subsequent requests will be validated using information in Last-Modified/ETag headers.