秒杀火热来袭Redis整点开启（整点秒杀开启redis）

With the continuous development of society, all kinds of technologies are reshaping our lives. Nowadays, machines are gradually replacing manpower, saving time and effort. In some e-commerce activities, user payment and check out need to be completed in an extremely short time, and this is exactly where Redis will be put into play.

Redis is an open source, in-memory data structure store, primarily used for scalability and huge performance solutions. Redis is actively used to run real-time data scenarios such as leaderboards and social network feeds, in addition to supporting distributed locking and high performance in a variety of scenarios such as e-commerce. It not only greatly improves the speed of overall business, but also solves the problem of spike pressure. In particular, it helps us to solve the problem of “second killing” in e-commerce activities. Redis helps us build a distributed queue, and the premise of queueing is to guarantee atomicity and consistency so that only one user can get the resources at critical moments.

Nowadays, the “second kill” event has already become an indispensable e-commerce activity for many stores. On the one hand, it can effectively attract the attention of potential customers, enhancing visibility. On the other hand, it can increase product sales. From the point of view of the use of Redis, when the second kill event is about to start, the administrator can use the following code to configure the limit for second kill activities:

Loculocker.acquire(key, limit, timeout)

By configuring the limit, when the number of users participating in the activity reaches the limit, it will automatically suspend the second killing event.

At the same time, registered users can add the product they are interested in to the queue wting list early on, and the last user who registers successfully can be notified within the specified time of the success of the second kill.

In redis, the command to fetch an element from a queue is as follows:

BRPOP queue_name timeout

When the second killing event is finished, we can use the following command to clean up the queue:

DEL queue_name

Overall, Redis is a powerful data structure storage that can solve the problem of “second killing” event efficiently. With Redis providing the necessary components, it can help us to complete the task of second killing quickly and effectively, which is the driving force for e-commerce merchants to continue to grow.