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

Does redis support atomic operations? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

Theoretical knowledge:

Redis is a high-performance key-value database. The emergence of redis makes up for the deficiency of key/value storage such as memcached to a great extent, and can play a good complementary role to relational database in partial situations. It provides clients such as Java,C/C++,C#,PHP,JavaScript,Perl,Object-C,Python,Ruby,Erlang, which is easy to use.

Atomicity: a transaction is an indivisible minimum unit of work that either succeeds or fails.

Atomic operations mean that one of your business logic must be inseparable.

For example, if you transfer money to others, your account deducts money, and other people's account increases money, this business logic is atomic, and this operation is atomic operation, which either succeeds or fails.

The execution of all individual commands in Redis is atomic.

The principle of realizing transaction by redis

1. Bulk operations are cached in queues before sending EXEC commands

two。 After receiving the EXEC command, enter the transaction execution, any command execution in the transaction fails, and the rest of the commands will not be executed.

3. During transaction execution, command requests submitted by other clients are not inserted into the transaction execution command sequence

This is the answer to the question about whether redis supports atomic operation. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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