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The following mainly brings you whether redis can replace mysql. I hope these contents can bring you practical use. This is also the main purpose of whether I edit redis instead of mysql. All right, don't talk too much nonsense, let's just read the following.

Can redis replace mysql?

Redis cannot replace mysql. Redis and mysql can only be complementary. Redis stores the data in memory and reads it quickly, but the memory space is small. Mysql is stored on the hard drive. The data is big. But reading hard drives is definitely slower than reading memory.

So it is usually a combination of the two to solve the problem of data reading.

Introduction to the difference between mysql and redis

Database types for 1.mysql and redis

Mysql is a relational database, which is mainly used to store persistent data and store the data in the hard disk with slow reading speed.

Redis is NOSQL, that is, non-relational database, is also a cache database, that is, the data is stored in the cache, the cache read speed is fast, can greatly improve the running efficiency, but the preservation time is limited.

The operating Mechanism of 2.mysql

As a relational database with persistent storage, the relatively weak point of mysql is that there is an IWeiO operation every time you request to access the database, if you visit the database repeatedly and frequently.

First: it will spend a lot of time on repeatedly linking the database, resulting in slow running efficiency.

Second: repeated access to the database will also lead to excessive database load, then the concept of caching is derived.

3. Caching

A cache is a cache for data exchange. When a browser executes a request, it first looks for it in the cache and, if it exists, gets it; otherwise, it accesses the database.

The advantage of cache is that it is fast to read.

4.redis database

Redis database is a cache database, which is used to store frequently used data, so as to reduce the number of visits to the database and improve operational efficiency.

For the above about whether redis can replace mysql, we do not think it is very helpful. If you need to know more, please continue to follow our industry information. I'm sure you'll like it.

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