class Ey::Core::ResponseCache
Public Class Methods
new(app, options = {}, &block)
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# File lib/ey-core/response_cache.rb, line 2 def initialize(app, options = {}, &block) @app = app @cache = options.fetch(:cache, &block) @cache_key_prefix = options.fetch(:cache_key_prefix, :ey_core) end
Public Instance Methods
call(env)
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# File lib/ey-core/response_cache.rb, line 8 def call(env) # Only cache "safe" requests return @app.call(env) unless [:get, :head].include?(env[:method]) cache_key = [ @cache_key_prefix, env[:url].to_s ] cached = @cache.read(cache_key) if cached env[:request_headers]["If-None-Match"] ||= cached[:response_headers]["Etag"] end @app.call(env).on_complete do if cached && env[:status] == 304 env[:body] = cached[:body] end if !cached && env[:response_headers]["Etag"] @cache.write(cache_key, env) end end end