How to switch from mysql-connector to mariadb?

Question

I'm switching from mysql-connector-java to mariadb-java-client .

Question:

1) Is it a problem if the underlying database is still a mysql database?

2) Is it valid to use jdbc:mariadb as the url, even if the underlying db is still mysql?

3) I'm relying on spring-boot to create an initial HikariDataSource connection pool. Do I have to disable the internal mariadb-client connection pool?

Eg:

spring.datasource.url=jdbc:mariadb://localhost/tablename
spring.datasource.username=root
spring.datasource.password=
spring.datasource.hikari.minimum-idle=1
spring.datasource.hikari.maximum-pool-size=10

Answer 1

1) Is it a problem if the underlying database is still a mysql database?

It is usually not a problem (unless you're using 8.0 with shiny new caching_sha2_password authentication).

2) Is it valid to use jdbc:mariadb as the url, even if the underlying db is still mysql?

Yes, it is valid. The only reason for jdbc:mariadb is that it helps to predictably load MariaDB's driver, even if MySQL's is also in classpath

3) I'm relying on spring-boot to create an initial HikariDataSource connection pool. Do I have to disable the internal mariadb-client connection pool?

If you did not enable driver's internal pool, it is not used. But maybe you should give internal pooling a try.