Support for no l2 cache mode

features/support/env.rb

@@ -29,5 +29,6 @@
 
 Looksist.configure do |looksist|
   looksist.lookup_store = Redis.new(url: 'redis://localhost:6379', driver: :hiredis)
+  looksist.l2_cache = :no_cache
   looksist.driver = Looksist::Serializers::Her
-end
+end

lib/looksist.rb

@@ -15,13 +15,13 @@ module Looksist
   include Hashed
 
   class << self
-    attr_accessor :lookup_store, :driver, :cache_buffer_size, :redis_service
+    attr_accessor :lookup_store, :driver, :cache_buffer_size, :redis_service, :l2_cache
 
     def configure
       yield self
       self.redis_service = Looksist::RedisService.instance do |lookup|
         lookup.client = self.lookup_store
-        lookup.buffer_size = self.cache_buffer_size || 50000
+        lookup.buffer_size = (self.l2_cache == :no_cache) ? 0 : (self.cache_buffer_size || 50000)
       end
     end
 

lib/looksist/redis_service.rb

@@ -32,14 +32,22 @@ def flush_cache!
     private
 
     def find_all(entity, ids)
-      raise 'Buffer overflow! Increase buffer size' if ids.length > @buffer_size
+      raise 'Buffer overflow! Increase buffer size' if  ids.length > @buffer_size && @buffer_size != 0
       keys = ids.collect { |id| redis_key(entity, id) }
-      missed_keys = (keys - @cache.keys).uniq
+      missed_keys = cache_op(proc_from { keys.uniq }) { (keys - @cache.keys).uniq }
       unless missed_keys.empty?
         values = @client.mget *missed_keys
-        @cache.merge!(Hash[*missed_keys.zip(values).flatten])
+        cache_op { @cache.merge!(Hash[*missed_keys.zip(values).flatten]) }
+      end
+      (cache_op(proc_from { values }) { @cache.mslice(keys) })
+    end
+
+    def cache_op(computed = nil)
+      if @buffer_size == 0
+        return computed.call if computed
+      else
+        yield
       end
-      @cache.mslice(keys)
     end
 
     def find(entity, id)
@@ -50,11 +58,15 @@ def find(entity, id)
     end
 
     def fetch(key, &block)
-      @cache[key] ||= block.call
+      (cache_op(proc_from { block.call }) { @cache[key] ||= block.call })
     end
 
     def redis_key(entity, id)
       "#{entity.pluralize}/#{id}"
     end
+
+    def proc_from
+      Proc.new
+    end
   end
 end

lib/looksist/version.rb

@@ -1,3 +1,3 @@
 module Lookist
-  VERSION = '0.2.3'
+  VERSION = '0.2.4'
 end

spec/looksist/hashed_spec.rb

@@ -10,7 +10,6 @@
   end
 
   context 'inject ' do
-
     it 'should be capable to deep lookup and inject' do
       class Menu
         include Looksist