Thanks for the Druid Project. Is there any place where I can find documentation for the Tranquility APIs? Specifically I want to find out where the Rejection policy is set in the service creation for Java. When I am sending messages to Druid in batches of 5 messages at a time, the success callback gives me 0 a lot of times and I would like to confirm whether its because of the Rejection policy. The documentation will also help me in tuning the service further. The load that we are trying to send is around 60-100 million messages per minute to Druid. Any help is greatly appreciated.