My knowledge of Adobe’s LiveCycle Data Services platform is very limited as I’ve experimented with it only once. However, I’m impressed with the ability of the LiveCycle Data Services (LCDS) to push what seems like a massive amount of messages per second to client machines running Adobe Flash/AIR applications.

http://www.dcooper.org/blog/client/index.cfm?mode=entry&entry=084D6DDA-4E22-1671-5EFB301D42924692

LCDS in their scenario was able to push 400,000 messages to 500 concurrent clients with an average latency of less than 15 milliseconds on a single dual-processor Intel machine.

I know there were some big improvements in the network stack and polling API in Silverlight 4 (in particular the http stack added multiple messages per poll) – but I don’t know how it compares from a performance perspective to the Adobe options.

Anyone know of any real-world comparisons?