Rules Engines vs Stream Processors

SquareBlog: "Rules Engines vs. Stream Processing Engines"

Hans Glide writes "Stream processing engines sort of took me by surprise. I was following the development of JSR94 and all the spiffy rules engines, and I didn't even realize that there's a whole other category of software for processing streams of data."

There are many vendors of stream event processing starting to appear... in many ways they are picking the low hanging fruit of the complex event processing field... but they are never-the-less real functioning applications and are a taste of things to come in the full blown CEP world.