09:53:21 GMT <c7h> good day, humans. I have a question. I need to solve the following problem: I have a list with the length of 1. Now, I need to check the value and pop it from this list in case it has a specific value. I have multiple consumers listening on that list - so it needs to be transaction safe. Any suggestions?
13:54:14 GMT <MaxPain> I'm facing a challenge that i'm not sure how to handle with redis. I'd like to have a sorted set where data is sorted not only by score but where first to reach to score has should stay first
13:54:31 GMT <MaxPain> is this something that can be done with Redis ?
16:05:57 GMT <strayArch> how could zcard == 3 and zrangebyscore(name, 0, -1) == []
16:06:39 GMT <solrize> c7h, lua ;)
16:06:46 GMT <strayArch> nvm XD -1, 0
16:07:00 GMT <solrize> MaxPain, it would take some hackery i think
17:04:38 GMT <liquid-silence> Hi all, in pub/sub mode
17:04:54 GMT <liquid-silence> what happens if there is no subscribers? what happens to the messages?
17:10:56 GMT <liquid-silence> should we fall back to just setting the message?
17:12:08 GMT <solrize> liquid-silence, i think with no subscribers the message just falls on the floor.  making it unreliable if connections drop.  there was something on antirez's blog about a retry mechanism in the works
17:12:21 GMT <liquid-silence> well
17:12:28 GMT <liquid-silence> I don;t want to poll the redis db
17:12:46 GMT <liquid-silence> so I am trying to find a decent way to have it subscribe to a channel and the client just push to it
17:13:02 GMT <liquid-silence> maybe pub/sub is not the best idea here
17:14:23 GMT <liquid-silence> I think polling will be the best way for this
17:14:32 GMT <liquid-silence> but then that adds latency
17:14:43 GMT <liquid-silence> which is what I want to stop from happening
17:14:55 GMT <liquid-silence> I could spin up threads for the polling and user an internal queue
17:34:33 GMT <solrize> if your connection is down, low latency will not happen.  if you can keep the connection up, pub/sub is ok
17:35:19 GMT <solrize> if what you want is a queue, redis isn't ideal, and antirez was working on some alternative whose details i've forgotten
17:35:26 GMT <solrize> plus there's rabbitmq, 0mq, etc
19:06:41 GMT <MaxPain> Thanks solrize, but i don't think i have the skills to hack redis lol
19:07:52 GMT <solrize> MaxPain, i just mean a little bit of scripting on the server side, not hacking the c code.  there is a built in lua for that.  see the docs
19:10:27 GMT <MaxPain> the only lua i know is the one in Roblox
19:11:21 GMT <solrize> redis has lua
19:25:28 GMT <MaxPain> Would be nice if there was a version of zrange that supported some sort of ordering field instead of relying on just the key
19:29:02 GMT <sknebel> MaxPain: ZRANGEBYSCORE?
19:37:41 GMT <MaxPain> sknebel, i cant rely only on score only since i can have ties, and sorting ties using lexico-thing is not working for me, i dont want John to win over Paul because his name starts with J.
19:39:00 GMT <MaxPain> my thinking here is that i want the first of the players to get the score to be #1
19:40:34 GMT <MaxPain> that's why having a custom discrimination field would be a good thing
19:52:22 GMT <solrize> so you need a table of all the scores that have been seen so far
19:52:24 GMT <solrize> hmm that could work
19:52:40 GMT <solrize> anyway what you want is called a stable sort
19:52:52 GMT <solrize> you could check the docs to see if redis sorting is stable by default
19:55:50 GMT <MaxPain> what do you mean by stable ?
19:59:24 GMT <MaxPain> oh, just did a search, i dont think redis has a stable sort because when the score changes, it removes old entry and adds the new entry, from what i could read online
20:31:31 GMT <redis561> Hello, I was wondering if a slave could connect to a master via SSL. Any hints as to whether that's possible in the docs?
20:36:20 GMT <avar> No, Redis has no ssl support, but you can just use stunnel
21:03:39 GMT <redis561> avar: Sorry, missed the notification. Stunnel works fine for when I have clients connected, but I'm talking about slaves in a cluster connecting to a master
21:04:36 GMT <redis561> Let me rephrase: Is it possible for a redis cluster slave to connect to a redis cluster master when the master is behind an SSL proxy
21:16:42 GMT <minus> no
21:16:53 GMT <minus> run a vpn
21:16:53 GMT <momoterraw> is it best practice to run redis in cluster
21:17:17 GMT <minus> definitely not, momoterraw, if you don't need it
21:17:27 GMT <minus> it just makes things a lot more complex
21:17:31 GMT <momoterraw> when do i need it normall?
21:17:33 GMT <momoterraw> normally
21:18:19 GMT <minus> if the amount or volume of data is too much for a single machine
21:18:28 GMT <momoterraw> oh gotcha
21:33:28 GMT <redis561> minus: Dang, thought so. I mostly wanted it to make backing up and failover easier. Any suggestions for alternatives for backing up / failover for redis?
21:34:25 GMT <minus> backing up is easy, just copy the dump.rdb regularly
21:34:50 GMT <redis561> minus: M'kay. I'll look into doing that instead for now, then. Thanks!
22:19:54 GMT <adarqui> hi, noob question. with zadd <key> INCR score member ... does the INCR mean, increase the previous key if that key is already in the scored set?
22:22:08 GMT <bjpenn> is there a command to pop/push X amount of messages from one queue to another queue?