Hi everyone, Searching Go's documentation and this group didn't really help me find what I'm looking for so, here goes.
I'd like to implement a timeout system on every request to my HTTP server that would work like this : - Receive an *http.Request*, perform initial checks on validity - Start a timeout *time.Timer* of N milliseconds - Send the Request + a *context.Context* to a goroutine, answering through a response channel when its job is done - Wait in a Select for either channel (*timer.C* or *responseChannel*) If the Select goes in the *responseChannel* branch, I can close my timer, and write my HTTP Response. Otherwise, my timer expired, I have to answer to my HTTP client, close my Context, and simply discard whatever is sent to the *responseChannel* afterwards, in the event that this actually happens. A few questions about this implementation : - (Technical stuff) How exactly are Timers and Tickers implemented in the runtime / in the OS? Is there a hard limit? Soft limit? Is it CPU-bound? Core-bound?... - If I received, let's say, 5000 queries per second, and every query has 100ms of timeout (so, 500 potential simultaneous timers - in practice, probably a bit more), would every timer really be perfectly stable? How can you make sure of this, debug, and monitor timer expirations? - Last but not least, admitting that Go's scheduler actually answers perfectly fine at the timer's expiration, how can I make sure that the end of the code after the *Select/Case* runs without stopping? Can the routine get "unscheduled" after the timer's expiration, but before writing the HTTP Response for some reason? Thanks for the insight. Don't hesitate to ask for precisions if necessary. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/cdf6b347-bfb9-44ce-b4d6-9d06602b1738%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
