Spring Boot: Communications link failure after some hours of inactivity with Hibernate, JDBC and MySQL [duplicate]

Answer 1

I solved the problem as described here: http://blog.netgloo.com/2015/07/09/spring-boot-communications-link-failure-with-mysql-and-hibernate/ , adding these configurations in the application.properties file:

spring.datasource.tomcat.testWhileIdle = true
spring.datasource.tomcat.timeBetweenEvictionRunsMillis = 60000
spring.datasource.tomcat.validationQuery = SELECT 1