title: Increasing number of instances of spring boot app is causing decrease in TPS at kafka broker side
body: <p>I am having a spring boot app which is acting as a kafka producer. We are trying to process 300 TPS and each request is about 1kb in size. When the same app is running on a single instance of PCF , we are able to achieve the desired TPS but when we are increasing the instances to 2 then TPS is decreasing to 150 only. We are using below properties to speed up the execution but still not able to figure out why it is working fine on 1 instance:</p>
  <pre><code>workerPoolCoreSize=50
  workerPoolMaxSize=1000
  batch.size=327680```
  
  Any idea?
  </code></pre>