title: AWS RDS Read replica high Write Throughput
body: <p>I am having a strange issue with my Amazon RDS read replica. The monitoring says it has much higher Wite Throughput than the master instance. Master is the same instance class, xlarge. Also, write IOPS metric looks higher. <a href="https://i.stack.imgur.com/zq8nR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zq8nR.png" alt="Read replica is orange"></a></p>
  
  <p>What may cause the higher write in read replica?</p>