Redis Is it possible to have atomic get + setex?

I want to make a session management， I will set the token to expire in 30 minutes, and if it is active, it will refresh. But I can't do it with one command. I have to run "get token" and "setex toekn 1800 xxx"

Is redis such an order to do it? if not, why not?

Comment From: itamarhaber

Hello @huangapple

Keep in mind that this issue tracker should be used for reporting bugs or proposing improvements to the Redis server. Questions should be directed to the community:

• /r/redis subreddit
• the mailing list
• the redis tag at StackOverflow
• the irc channel #redis on freenode.

As for the question, while there is no such single Redis command, you can compose the GET and SETEX (or, even better, just use EXPIRE) with a Lua script (see EVAL) like this one:

local val = redis.call('GET', KEYS[1])
if val ~= nil then
  redis.call('EXPIRE', KEYS[1], 1800)
end
return val

Comment From: madolson

I suppose this was solved by the new getex command, so this can be resolved.