logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <layout class="ch.qos.logback.classic.PatternLayout">
      <pattern>
        %d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n
      </pattern>
    </layout>
  </appender>

  <logger name="com.zaxxer.hikari" level="DEBUG" />

  <root level="info">
    <appender-ref ref="STDOUT" />
  </root>

</configuration>