Shulou(Shulou.com)05/31 Report--

In this issue, the editor will bring you about how to achieve a self-increasing ID counter in Redis. The article is rich in content and analyzes and describes for you from a professional point of view. I hope you can get something after reading this article.

In the relational database MySQL, we can automatically generate a unique incremental ID for each additional record by setting the field property to AUTO_INCREMENT, while in Redis, we can use a key named object type: count to store the number of objects of the current type for each type of object, and use the INCR command to increment the value of the key each time we add a new object.

The idea of self-incrementing ID counters is quite simple: whenever an operation occurs, send an INCR command to Redis.

The Redis Incr command increments the numeric value stored in key by one.

If key does not exist, the value of key is initialized to 0 before performing the INCR operation.

If the value contains the wrong type, or if the value of the string type cannot be represented as a number, an error is returned.

For example:

127.0.0.1 6379 > set chenfeng 10

OK

127.0.0.1 purl 6379 > incr chenfeng

(integer) 11

127.0.0.1 purl 6379 > get chenfeng

"11"

The above is the editor for you to share how to achieve a self-increasing ID counter in Redis, if you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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