Expire key notification for specific key

[Hitesh Dobariya]

Is there any option in redis to listen specific key like "user:*" ? i want to listen only expire event for specific key, not for other keys like "KEY1, KEY2" are expires. i tried with regex but it's not working for me..

[Jan-Erik Rediger]

I guess you're talking about keyspace notifications?
http://redis.io/topics/notifications

If so, Redis publishes commands for a specific key (mykey in this
example) to the channel: __keyspace@0__:mykey

If you you have keys like user:1, user:2 the channels will be:
__keyspace@0__:user:1
__keyspace@0__:user:2

You can subscribe to these using PSUBSCRIBE
http://redis.io/commands/psubscribe

PSUBSCRIBE __keyspace@0__:user:*

Make sure you enable the right keyspace notifications.
Does this help you?

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[Hitesh Dobariya]

rClient1.psubscribe('__keyevent@0__:expired'); 

rClient1.on("pmessage", function (channel, message) {

    c(message); // prints __keyevent@0__:expired

   c(channel); //prints __keyevent@0__:expired

}

,

so problem is i am unable to get key name which are going to expire. i want key name when it's expires. for example if user:123 is going expire then i am able to get user:123. so i can handle other my server event on it.

[Hitesh Dobariya]

Thanks for your suggestion now i am able to get the notification.