RubyRedis: set TCP_NODELAY TCP socket option to to disable the neagle algorithm. Makes a huge difference under some OS, notably Linux

Changelog

@@ -1,3 +1,6 @@
+2009-05-25 maxclients implemented, see redis.conf for details
+2009-05-25 INFO command now reports replication info
+2009-05-25 minor fix to RubyRedis about bulk commands sent without arguments
 2009-05-24 Warns if using the default config
 2009-05-24 Issue with redis-client used in scripts solved, now to check if the latest argument must come from standard input we do not check that stdin is or not a tty but the command arity
 2009-05-23 RubyRedis: now sets are returned as arrays again, and not as Set objects

TODO

@@ -2,7 +2,6 @@ BEFORE REDIS 1.0.0-rc1
 
  * Add number of keys for every DB in INFO
  * maxmemory support
- * maxclients support
  * Resize the expires and Sets hash tables if needed as well? For Sets the right moment to check for this is probably in SREM
  * What happens if the saving child gets killed or segfaults instead of ending normally? Handle this.
  * check 'server.dirty' everywere. Make it proprotional to the number of objects modified.
@@ -21,6 +20,15 @@ AFTER 1.0 stable release
  * Elapsed time in logs for SAVE when saving is going to take more than 2 seconds
  * LOCK / TRYLOCK / UNLOCK as described many times in the google group
  * Replication automated tests
+ * some kind of sorted type, example:
+        ZADD mykey foo 100
+        ZADD mykey bar 50
+   ZRANGE mykey 0 1 => bar foo
+   This is able to take elements sorted because a binary tree is used to store
+   the elements by 'score', with the actual value being the key. On the other
+   side the type also takes an hash table with key->score mapping, so that when
+   there is an update we lookup the current score and can traverse the tree.
+ * BITMAP type
 
 FUTURE HINTS
 

client-libraries/ruby_2/rubyredis.rb

@@ -116,6 +116,7 @@ class RedisClient
         else
             sock = TCPSocket.new(host, port, 0)
         end
+        sock.setsockopt Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1
 
         # If the timeout is set we set the low level socket options in order
         # to make sure a blocking read will return after the specified number