redis socket support

tools/redis/redis.conf

@@ -0,0 +1,10 @@
+unixsocket /var/run/redis/redis.sock
+unixsocketperm 770
+port 0
+# Do not actually listen to any tcp port
+# but include the bind directive because without it redis will
+# listen on the public interface. Port 0 causes it to NOT listen on
+# the public interface. Adding the below line is an extra precaution.
+# If a developer comes by later and wants to listen on a tcp port and changes
+# the above port, it will ONLY listen on the local interface.
+bind 127.0.0.1