Question

Are there any embedded priority mechanisms in Netty that can help me to decide which messages are send more often than others?

Answer 1

You can prioritize writes using a BufferedWriteHandler which needs to be implemented with an unbound priority queue. To quote from the JavaDocs:

You can implement prioritized writes by specifying an unbounded
priority queue in the constructor of this handler. It will be required
to design the proper strategy to determine how often flush() should be
called. For example, you could call flush() periodically, using
HashedWheelTimer every second.