How to implement flash sales in golang

With the vigorous development of e-commerce business, Seckill has become an important part of e-commerce business. As users become more and more interested in shopping, and the number of participants in flash sale activities increases, how to deal with the problems of high concurrency and high concurrent writing has become particularly important. At present, many large e-commerce websites use golang language to implement flash sale systems. This article will introduce the principle and process of implementing flash sales in golang.

1. Flash Sale Process

Flash sale is an extremely concurrent activity, so it is necessary to support a large number of users to participate in the flash sale at the same time. The flash sale process can be divided into the following steps:

1. Product details page display: Before entering the flash sale page, users need to see the detailed introduction of the product, such as product name, price, original price, pictures and other information .
2. Preheating: In order to load the cache of the product into the memory in advance and ensure the accurate start time of the flash sale, the preheating operation needs to be performed in advance.
3. Login/Registration: Users need to register an account in the system and log in to participate in the flash sale.
4. Flash sale page display: Before the flash sale starts, users need to wait on the page for the flash sale to start. At the same time, the page needs to display information such as the number of people who have participated.
5. Snap-up: After the flash sale starts, users need to wait on the page to obtain the qualification to purchase the product. Once they obtain the qualification to purchase the product, they need to complete the payment immediately.

2. Golang realizes flash sales

Golang language is a very popular language at present. The support of coroutine technology and high concurrency technology makes golang language very suitable for realizing flash sales. system. Golang's implementation of flash sales can be divided into the following steps:

1. Product caching: Use caching technology such as Redis to cache all products in memory to improve access speed and prevent malicious requests from causing database downtime.
2. Preheating: Preheating pulls all product data from the cache into memory in advance to avoid excessive pressure on the request database during high concurrency. At the same time, preheating can load product data in advance and shorten the loading time of the product list. , improve user experience.
3. Activity restrictions: Flash sale activities need to limit each user to only purchase one item. This can be solved by using caching technologies such as Redis or Memcached or using global variables, mutex locks and other technologies.
4. Second sale interface: Use golang language to build a flash sale interface. In high concurrency situations, you can use the third-party library gin to implement routing and middleware encapsulation, and you can use channal, sync.WaitGroup and other technologies to control access and queues in high concurrency situations; in addition, golang's coroutine technology can improve processing Parallel request efficiency and save resources.
5. Database optimization: For high-concurrency writing scenarios, MySQL master-slave replication, partitioning and table partitioning can be used to disperse write traffic to multiple nodes to alleviate single-point write pressure.

3. Summary

Flash sale is an extremely high-concurrency and high-concurrency writing activity. How to support a large number of users to share multiple products is the key to realizing the flash sale system. As a language with high concurrency and high concurrent writing capabilities, golang can help us implement an efficient flash sale system. This article introduces the basic process of flash sales and the principles and methods of implementing flash sales in golang language. I hope that readers will have a deeper understanding of flash sales and golang language.

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