diff --git a/lib/diaspora/redis_cache.rb b/lib/diaspora/redis_cache.rb
index cf0b87eeb..3620ee222 100644
--- a/lib/diaspora/redis_cache.rb
+++ b/lib/diaspora/redis_cache.rb
@@ -11,7 +11,6 @@ class RedisCache
   def initialize(user, order_field)
     @user = user
     @order_field = order_field.to_s
-    self
   end
 
   # @return [Boolean]
@@ -29,19 +28,14 @@ class RedisCache
     post_ids[0...limit]
   end
 
-  # @return [RedisCache] self
   def ensure_populated!
     self.repopulate! unless cache_exists?
-    self
   end
 
-  # @return [RedisCache] self
   def repopulate!
     self.populate! && self.trim!
-    self
   end
 
-  # @return [RedisCache] self
   def populate!
     # user executes query and gets back hashes
     sql = @user.visible_posts_sql(:limit => CACHE_LIMIT, :order => self.order)
@@ -50,19 +44,13 @@ class RedisCache
     # hashes are inserted into set in a single transaction
     redis.multi do
       hashes.each do |h|
-        self.redis.zadd(set_key, h[@order_field], h["id"])
+        self.redis.zadd(set_key, h[@order_field].to_i, h["id"])
       end
     end
-
-    self
   end
 
-  # @return [RedisCache] self
   def trim!
-    puts "cache limit #{CACHE_LIMIT}"
-    puts "cache size #{self.size}"
     self.redis.zremrangebyrank(set_key, 0, -(CACHE_LIMIT+1))
-    self
   end
 
   # @param order [Symbol, String]
diff --git a/spec/lib/diaspora/redis_cache_spec.rb b/spec/lib/diaspora/redis_cache_spec.rb
index f26d9a5dc..a38e2107a 100644
--- a/spec/lib/diaspora/redis_cache_spec.rb
+++ b/spec/lib/diaspora/redis_cache_spec.rb
@@ -40,21 +40,21 @@ describe RedisCache do
       @timestamp = Time.now.to_i
       30.times do |n|
         created_time = @timestamp - n*1000
-        @redis.zadd("cache_stream_#{bob.id}_created_at", created_time, n)
+        @redis.zadd("cache_stream_#{bob.id}_created_at", created_time, n.to_s)
         @timestamps << created_time
       end
     end
 
     it 'returns the most recent post ids (default created at, limit 15)' do
-      @cache.post_ids.should =~ 15.times.map {|n| n}
+      @cache.post_ids.should =~ 15.times.map {|n| n.to_s}
     end
 
     it 'returns posts ids after the specified time' do
-      @cache.post_ids(@timestamps[15]).should =~ (15...30).map {|n| n}
+      @cache.post_ids(@timestamps[15]).should =~ (15...30).map {|n| n.to_s}
     end
 
     it 'returns post ids with a non-default limit' do
-      @cache.post_ids(@timestamp, 20).should =~ 20.times.map {|n| n}
+      @cache.post_ids(@timestamp, 20).should =~ 20.times.map {|n| n.to_s}
     end
   end
 
@@ -112,7 +112,7 @@ describe RedisCache do
       @timestamp = Time.now.to_i
       30.times do |n|
         created_time = @timestamp - n*1000
-        @redis.zadd("cache_stream_#{bob.id}_created_at", created_time, n)
+        @redis.zadd("cache_stream_#{bob.id}_created_at", created_time, n.to_s)
         @timestamps << created_time
       end
 
@@ -126,11 +126,11 @@ describe RedisCache do
       @timestamp = Time.now.to_i
       120.times do |n|
         created_time = @timestamp - n*1000
-        @redis.zadd("cache_stream_#{bob.id}_created_at", created_time, n)
+        @redis.zadd("cache_stream_#{bob.id}_created_at", created_time, n.to_s)
         @timestamps << created_time
       end
 
-      post_ids = 100.times.map{|n| n}
+      post_ids = 100.times.map{|n| n.to_s}
       @cache.trim!
       @cache.post_ids(Time.now.to_i, @cache.size).should == post_ids[0...100]
     end