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What are the characteristics of Redis? 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.

Redis is the most popular NoSQL (Not Only SQL) database in the Internet world. NoSQL plays an important role in the Internet system, because it can greatly improve the performance of the Internet system.

Redis has the function of a certain persistence layer and can also be used as a caching tool. For NoSQL database, as a persistence layer, the data it stores is semi-structured, which means that computers have fewer rules to read into memory and read faster.

Redis data read and write very fast, because it reads the data into memory operations, and redis is written in C language, is the closest "to" the operating system language, so the execution speed is relatively fast.

Although redis reads data in memory, it ultimately supports data persistence to disk.

Redis provides rich data structures.

All operations of redis are atomic and support transactions. Atomicity means that changes to the data are either performed or not performed at all.

Redis supports master-slave replication, and the host automatically synchronizes the data to the slave, allowing read-write separation.

Features:

1. Support multiple data structures, such as string (string), list (two-way linked list), dict (hash table), set (collection), zset (sorting set), hyperloglog (cardinality estimation)

two。 Support persistence operation, aof and rdb data can be persisted to disk, thus data backup or data recovery and other operations, a better means to prevent data loss.

3. Support data replication through Replication, through master-slave mechanism, real-time synchronous data replication, support multi-level replication and incremental replication. Master-slave mechanism is an important means for Redis to carry out HA.

4. Single-process request, all commands are executed serially, and data consistency does not need to be considered in the case of concurrency.

This is the answer to the question about the characteristics of Redis. 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 to learn more about it.

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