Does Netty 5 support EventExecutorGroup with ThreadFactory?

Question

In New and noteworthy in 5.0 (http://netty.io/wiki/new-and-noteworthy-in-5.0.html). "An implication of this change is that NioEventLoop, NioEventLoopGroup, EpollEventLoop and EpollEventLoopGroup do no longer take ThreadFactory objects as constructor arguments. The constructors of these classes have been updated to take Executor and ExecutorFactory objects instead."

In my use case, I have a handler handle blocking operation with an fixed size EventExecutorGroup.

EventExecutorGroup businessGroup = new DefaultEventExecutorGroup(100);
pipeline.addLast(businessGroup, channelHandler);

To improve the performance in production, I want to use a threadFactory with dynamic size threadPool. So when traffic increase, the blocking handler could take more threads automatically. Does netty 5 support custom EventExecurtorGroup with threadFactory?

Answer 1

I'm not exactly sure what you mean with your question, but netty 5 was designed to give you a lot more freedom, so you could use any type of executor you wanted (or create your own). Executors.newCachedThreadPool(); is the default implementation of a threadpool that automatically scales the number of threads.

One thing you should note though is that 5.0 will not be supported for now. https://github.com/netty/netty/issues/4466