Is there any particular reason you were using Java then? Seems like you could get the same effect with much more suitable languages.

Tooling, productivity, developer pool.

Usually these are very niche use cases that can be packed into a special purpose library.

Check the openHFT repository from my original post.

The general thinking is that 99% of code at even an HFT doesn’t have to look that funny, so it might make sense to write funny looking java for the 1% that does so you don’t have to fragment your codebase and talent pool.