laravel/laravel — pull request #1308 by Lapayo (2012-10-03 13:19:14+00:00)
Title: Persistent redis connection!

Persistent connection for the redis database.
Simply set the bool "persist" in the redis database configuration and the database connection will be persistent.
Under high traffic this helps avoiding errors like

Unhandled Exception
Message:
Error making Redis connection: 99 - Cannot assign requested address
Location laravel/redis.php on line 153

Without persistent connections I had many connections to the redis database in the "TIME_WAIT" state.
Now I only have one connection per php child.