Transactions in redis?

Question

Redis

There is an application on node js that I run through cluster. In child processes there is a certain request to an external api, I want to do it through a proxy.
I'm trying to implement a proxy queue system, that is, use each one in turn. I made an array of proxies and write the proxy number in redis. At the next request, I take this number, increase it by one and take the next proxy. But let's say that we have 2 requests simultaneously for child processes, they both access redis and get the same value, so the proxy will be used 2 times in a row. What is the correct way to solve this problem, because transactions in redis do not give the opportunity to block the read thread?

Answer 1

What prevents you from using the lock separately (something like SET key NX PX 1000)? Get the lock, increment the counter, release the lock.

Answer 2

[b]rpoplpush