If you have a Java program that connects to a kdb+ database then ensure you turn off the Nagle algorithm; which is an optimization algo set by default to ensure not to send payloads smaller than the headers. For instance sending a payload of 1 byte and the TCP headers are 20 bytes would be inefficient so it is best to add more data to the payload before sending. However for latency sensitive applications this efficiency is not desirable. It can be turned off using the following snippet of code:
kx.c connection = ...
c.s.setTcpNoDelay(true)
c.k(".test.c:20j")
c.k(".test.c")
Bingo! Now it will turn off the packet efficiency algo (at the expense of pipe congestion) but it is best to send a payload straight away rather than delaying it. This advice is applicable for any sort of messaging within a Java program with real-time constraints.
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