Hi @schernolyas , yes the idea Emmanuel had was to write to bson directly; that link seems to describe the approach.

Feel free to have your EPAM team try doing this; remember though that the goal is to improve performance by allocating less Map instances so when you all are prototyping this approach make sure the design actually avoids creating these at runtime.
I did something similar for the Hot Rod client (also called Infinispan Remote): it needs similar maps and encoders/decoders, but I made sure to initialize the necessary encoders at boot-strap time - then reuse them for each read & write operation. I suspect a similar approach would be needed in this case, but feel free to explore the options.