Support a Dalli Connection Pool

lib/rack/attack/store_proxy.rb

@@ -14,8 +14,14 @@ module Rack
 
         if defined?(::Redis::Store) && store.is_a?(::Redis::Store)
           RedisStoreProxy.new(store)
-        elsif defined?(::Dalli) && store.is_a?(::Dalli::Client)
-          DalliProxy.new(store)
+        elsif store.respond_to?(:with)
+          store.with do |conn|
+            if defined?(::Dalli) && conn.is_a?(::Dalli::Client)
+              DalliProxy.new(store)
+            else
+              raise NotImplementedError
+            end
+          end
         else
           store
         end
@@ -81,6 +87,12 @@ module Rack
         rescue Dalli::DalliError
         end
 
+        def delete(key)
+          with do |client|
+            client.delete(key)
+          end
+        rescue Dalli::DalliError
+        end
       end
     end
   end

rack-attack.gemspec

@@ -29,5 +29,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'activesupport', '>= 3.0.0'
   s.add_development_dependency 'redis-activesupport'
   s.add_development_dependency 'dalli'
+  s.add_development_dependency 'connection_pool'
 end
-

spec/integration/rack_attack_cache_spec.rb

@@ -15,11 +15,13 @@ describe Rack::Attack::Cache do
 
   require 'active_support/cache/dalli_store'
   require 'active_support/cache/redis_store'
+  require 'connection_pool'
   cache_stores = [
     ActiveSupport::Cache::MemoryStore.new,
     ActiveSupport::Cache::DalliStore.new("localhost"),
     ActiveSupport::Cache::RedisStore.new("localhost"),
     Dalli::Client.new,
+    ConnectionPool.new { Dalli::Client.new },
     Redis::Store.new
   ]