<div class="gmail_quote">Prematurely sent.<br><br>On Sun, Jun 12, 2011 at 7:59 PM, Banibrata Dutta <span dir="ltr"><<a href="mailto:banibrata.dutta@gmail.com">banibrata.dutta@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<br>What would be a good way to correlate asynchronous events, spot patterns over a sliding window (s.a. of no. of events elapsed or time elapsed), with millions of events occurring simultaneously, using Erlang ?<br>
<br>The set of possible events is known, and any unknown event is just flagged as 'unknown' (so all unknowns are similar). The set of possible event patterns can be enumerated, but is possibly quite a large set of patterns.<br>
</blockquote></div><br>Was wondering as to what could be the approach taken to implement such a thing in pure Erlang. My initial thoughts were along the line of maintaining FSMs per event source, but with so many events and so many possible/valid patterns, the thing seems kind of unwieldy. Also, I'd like a non-programmer to be able to define new events and valid event patterns.<br>
<br>I believe 'Complex Event Processing' is quite likely to be the standard
approach for such things, as I've found from some posts, and solutions
exist in Java world for same, but both as an academic exercise (for the fun of learning) and for a potentially simpler + better solution, would like to try doing this is Erlang.<br><br>-- <br>regards,<br>Banibrata<br>