First, practical problems

There are many kinds of database engines, relational, graph, mesh, hierarchical, in-memory, and so on, many of which we have never even heard of. How do you know which database technologies you should learn? Of course, we should choose the most popular database technology for learning.

Second, solutions

1. Check out DB-engines.com at DB-Engines

2. Go to the ranking engine page: db-engines.com/en/ranking

As shown below, you can see the ranking of the database engines in 370, with monthly and yearly heat ups and downs.

3, you can also enter the line chart page to view the development trend of the database: db-engines.com/en/ranking_…

MySQL is one of the most correct databases used in daily work, so it is necessary to have a more in-depth and comprehensive grasp of distributed transactions, various database locks, propagation mechanisms and so on for high-level personnel.