How are redis queue tasks performed?

concurrency problems can be solved with locks, such as optimistic locks and pessimistic locks, but when you see many references to using redis queues, what is the whole process like?
whether it is like this: if you receive a request in the
API, push the task parameters to the redis queue, and then you need to execute the processing queue task. Does this operation keep querying the redis queue and execute it as soon as you find a task?
if 1000 requests are concurrently, Since it"s a queue, isn"t it a long time to wait for the last one to finish?

Redis node.js

Sep.23,2021

Isn't

queue a first-in, first-out data format? The principle of his implementation is to forcibly convert multithreading to single threading to avoid some of the problems caused by concurrency.
I have used two scenarios so far

operation, you need to request a third-party interface, such as sending email and address coding, or if it takes a long time, I will execute it asynchronously, which is actually performing a queue processing task, so that the user will not be aware of it.
this logic: when a user clicks and buys, I will put him in the queue, such as snapping up 1000 units. If there are 1000 units in the queue (usually it will float a bit), I will directly return to the page that has been snapped up. Within 1000, I will return a waiting page, and then let the user jump again after the background processing is completed using methods such as websocket. Generally speaking, at the current computing level, this process takes 3 seconds.

in fact, queue task is a way to optimize the user experience and reduce the difficulty of background processing. You can deal with it directly in the logic, but you can solve the concurrency problem. You also need to solve the problem of false death of the page when it takes a long time to execute the task, and the browser timed out and the third party returned an error. It's not that it can't be solved. It's annoying. I just tried it at first and almost dropped the keyboard.

Previous: Bootstrap-table background paging total returns a large value, resulting in slow loading of foreground paging calculation

Next: The running picture of Active Threads Over Time Listener has not changed.

About the Design of redis ranking with millions of users
1. If you want to make a ranking of users gold coins, only the highest 100 records will be displayed if displayed. 2. When it comes to using redis to do the ranking, most people will think of using sorted set to do it. But if there are millions of use...

Redis node.js python java php

Mar.10,2021
Node.js connection redis cluster problem
NODE.JS cannot write to redis cluster RT, attempts to write to the redis cluster, using alibaba s ioredis. There was no problem writing redis with node_redis before. But after rewriting the cluster, it was found that it could not be written at all. A...

Redis-Cluster redis node.js

Mar.28,2021
The data obtained by nodejs redis is returned by Synchronize.
topic description nodejs redis gets the data and Synchronize returns sources of topics and their own ideas Synchronize returns the data saved by redis related codes ** * string * @param key * @param callBack(err,result) * db.get = f...

Redis node.js

Aug.14,2021
Use redis publish / subscribe to share data between servers?
now there is a problem that one server generates data and wants to give it to other servers to use. My idea now is to use the publish subscribe function of redis to share data. I don t know what the effect is. Have any great gods ever used it, ask for...

Redis node.js

Oct.31,2021
Distributed websocket, how to make people who hit different servers communicate with each other?
recently exposed to websocket, the demand is very simple, using websocket to let users participate in a 1v1 Mini Game. The environment is distributed, and each server is multi-process, and the web server uses the nodejs,websocket framework with socket....

Javascript redis node.js socket.io websocket

May.20,2022