[This message was posted by Ryan Pierce (FPL Technical Director) of FIX Protocol Ltd. <ryan.pie...@fixprotocol.org> to the "General Q/A" discussion forum at http://fixprotocol.org/discuss/22. You can reply to it on-line at http://fixprotocol.org/discuss/read/c2153db8 - PLEASE DO NOT REPLY BY MAIL.]
> Seeing as this is really just a QoS implementation of sorts, with > congestion relief (aka throttling) being just one aspect of QoS, is > there an actual QoS standard that this proposal is modeled on? I'm not sure I consider Throttling to be QoS. This proposal was modeled on requirements stated by exchanges participating in the Global Exchanges and Markets Committee meetings, not by any QoS standard. I see QoS as much more dynamic. Throttling rules are largely static. An exchange tells its members at the start of day how many orders per second they can send, and what consequences they can expect if they exceed those limits. They are just as much business rules as a technical strategy to avoid congestion. It is possible for these proposed Throttling messages to be sent intraday, but I haven't heard much exchange interest in doing so. It might be useful in emergency situations caused by reduced exchange capacity or an increase in market activity. But I certainly don't see an exchange sending one out every second to tell a member how many orders can be sent in that second. The idea of using QoS protocols for order flow sounds very interesting. However, extensions to FIX generally result from business requirements presented to FPL. Are there any exchanges that use, or plan on using, a QoS protocol? [You can unsubscribe from this discussion group by sending a message to mailto:unsubscribe+100932...@fixprotocol.org] -- You received this message because you are subscribed to the Google Groups "Financial Information eXchange" group. To post to this group, send email to fix-proto...@googlegroups.com. To unsubscribe from this group, send email to fix-protocol+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/fix-protocol?hl=en.
