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This has nothing to do with automation of deployments. Any part of an automated deployment can fail. (In fact, you almost certainly are.) This is risky. But if your system is wildly broken, this might not be doing Nike Jacket Zip Up what Nike Sports T Shirts Full Sleeves
"Has to" is pretty strong. You folks have chosen to work that way, but other people do it differently.
ramchip 123 days ago link
hft_throwaway 122 days ago link
you think it doing. As I understand it, this happened to Knight.
rossjudson 122 days ago link
time on things that don generate PnL. Traders want to try lots of ideas so many features are built that don get used. Code cleanup gets put on the back burner. Developers do sketchy stuff like re purposing a message field because it annoying or time consuming to deploy a new format. In Lean Manufacturing, heavy QA is seen as wasteful, covering up for upstream problems. Their approach is to eliminate the root problems. That let Toyota kick the asses of the US car manufacturers in the 80s.>documentation has to be written to me smells of a phasist approach, with disconnected groups of specialists. You can do them together, but it not the only way. The "do more QA" approach is trying to decrease MTBF, with the goal of nothing bad happening ever. But there another approach: to minimize MTTR (or, more accurately, to minimize impact of issues). Shops like that are much better at recovering from issues. Rather than trying to pretend they will never make mistakes, they assume they will and work to be ready for it.
A DevOps CautionaryTale
I say this having been in a firm where we moved from "a list of deployment steps" to "fully automated" for our quarterly builds, and the result was much, much, much worse than it was before. They ignored critical warning messages sent by the system pre trading (the system was warning them that it was a SNAFU situation). Systems in a cluster didn verify versions with each other. Configuration did not demand a version. Most importantly for a system of this sort, they didn have a trade gateway that they could easily see what the system was doing, and gate abnormal behaviors quickly and easily (such a system should be as simple as possible, the premise being that it an intermediate step between the decision systems and the market. The principal is exactly the same as sending a mass customer mailing to a holding pen for validation to ensure that your macros are correct, people aren multi sent, to do throttling, etc).
a press release, sales and customers may need to be notified, etc.
wpietri 123 days ago link
akerl_ 122 days ago link
I hope you trolling, but rolling out high impact code as is described in this article and comment thread without serious review and QA is akin to business suicide, as demonstrated by the article.
The code was QAed, but they didn test old and new versions against each other. Version A could accept a flag and run obsolete logic that would lose control of its orders but never sent it, so this problem never happened. Version B sent this flag and the receiver would send RPI orders with it. Trading desks don want to spend development Nike Windrunner Orange
I think that a strange way to approach a killswitch. The point of a killswitch is to stop everything NOW, so the system can be checked. After the problem is understood, then it safe to restart strategies gradually and unwind positions. A system shouldn attempt to send more orders when it in an unpredictable state. Yet, we only deploy once every few weeks. Why? There more to releasing code than simply pushing it live: QA has to review it, documentation has to be written marketing may need to write Nike Hoodies For Men
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