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DB-Engines Ranking

http://db-engines.com/en/ranking

The DB-Engines Ranking ranks database management systems according to their popularity. The ranking is updated monthly.

Read more about the method of calculating the scores.

http://db-engines.com/en/ranking_trend

Redis

MongoDB

MySQL

# 2018

![image](https://user-images.githubusercontent.com/7291672/40128695-cfe2a2f8-5964-11e8-8b9e-7af4cd9e667b.png)

http://www.cnblogs.com/xgqfrms/p/5866447.html

https://db-engines.com/en/ranking
https://db-engines.com/en/ranking_trend

![image](https://user-images.githubusercontent.com/7291672/40128745-f835168c-5964-11e8-8c10-adbfcb46e3ff.png)

# 2020