However, this statement is false, and can be easily proved by just looking at the implementation source code of the BinaryRelayBuilder, which copies the complete input stream into a byte[] in Heap memory via traditional CPU copying into user space.
In-fact, when WSO2 announced this "Binary Relay" in December 2009, even the author of this "feature" did not state that its anything near "Zero Copy". Even a search on Google for WSO2 and Zero copy returns no results!
"Zero-copy" describes computer operations in which the CPU does not perform the task of copying data from one memory area to another." - Wikipedia
The AdroitLogic UltraESB is the FIRST and still the ONLY Open Source ESB (or most possibly "the only ESB") that supports True Zero-Copy proxying.
Thats why its the fastest ESB out there!
