Shulou(Shulou.com)06/01 Report--

What this article shares with you is about what the atomic operation of redis is. The editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

Redis is an open source API that is written in ANSI C language, supports the network, can be memory-based and persistent, and provides API in multiple languages.

Atomicity

Atomicity is a characteristic in the transaction of a database. In the context of database transactions, atomicity means that all operations in a transaction (transaction) are either completed or not completed, and do not end in the middle.

For Redis, the atomicity of a command means that an operation can no longer be divided, and the operation is either executed or not executed.

The reasons for the atomicity of Redis operation

The operation of Redis is atomic because Redis is single-threaded.

Since I am not very familiar with the knowledge related to the operating system, I can't really understand the atomicity of Redis operation from the above sentence. Let's further look at the concept of process and thread and their differences.

The performance of Redis in concurrency

Redis's API is atomic, so are so many commands atomic in concurrency?

For Redis, executing API such as get, set and eval is a task, these tasks will be carried out by the thread of Redis, and the task either succeeds or fails, which is why the command of Redis is atomic.

All the API provided by Redis itself are atomic operations, and the transactions in Redis are actually meant to ensure the atomicity of batch operations.

The above is what the redis atomic operation is, and the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.