title: Debezium: Reduce Load consumption of WalSenderMain activity
body: <p>I'm currently using Debezium for our postgres databases which are on AWS Aurora (RDS). As you know, debezium makes use of publication (the default name: 'dbz_publication'.</p>
  <p>One thing I've noticed is that in AWS, we can see that the WALSenderMain (Write ahead log) activity seems to be constant with a load of AAS (Average Active Sessions) of 1 (100&amp;).</p>
  <p><a href="https://i.stack.imgur.com/RaGQz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RaGQz.png" alt="enter image description here" /></a></p>
  <p>By drilling down further this is caused by the continuous call of querying the publication table.</p>
  <p><a href="https://i.stack.imgur.com/coxJd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/coxJd.png" alt="enter image description here" /></a></p>
  <p>Note that in the configuration, I've set the 'publication.autocreate.mode' to 'filtered' rather than all the tables.</p>
  <p>Is this normal? Would there be any way for me to finetune debezium to lower WALSenderMain activity usuage? Thanks.</p>