title: Unable to set HikariCP max-pool-size
body: <p>I'm using Spring Boot 2.0.3 release. I want to increase the maximum pool size of HikariCP which is 10 by default. </p>
  
  <p>I tried changing it in <code>applicaiton.properties</code> with </p>
  
  <blockquote>
    <p>spring.datasource.hikari.maximum-pool-size=200</p>
  </blockquote>
  
  <p>but it is not working because in the logs it still show that max pool size is 10.</p>
  
  <p>The reason I want to change is because I am somehow reaching that limit in staging and I have no idea what's causing it.</p>