Hi Tony. Have you ever considered using a firewall and routing approach?
For example, on the same server, you can keep open your current node-js server and open other in the port 81, for example. And the trick is, *send only the new users connections *to the new node-js server in the port 81. With time, the users will finish your work in the old node-js server in port 80. You must evaluate well how to do it to avoid latency or even to freeze the server. -- Amanda Osvaldo On Tuesday, 28 February 2017 14:35:48 UTC-3, Tony Mobily wrote: > > I have a very, very busy node application on a production server. The app > deals with a real-time chat (using websockets) as well as e-commerce > payments. While *everything* is absolutely set so that when the server > goes down the clients will reconnect their sockets etc., I still have a > problem: whenever the server is stopped, with a SIGINT, the event loop is > cut off. This means that any pending DB write (possibly for a financial > transaction) is simply discarded. There are two especially crucial moments > (when the credit card merchant gives the OK, but *before* we write the > record on the db) and at the moment we are shutting it down at off-peak > times to prevent any possible problems. But this is bad. > > I am thinking of this as a solution: > > - I send a custom UNIX signal to the process (SIGUSR2 for example?); > - When server.js gets the signal: > - It stops listening to port 80 > - It waits for the event loop to dry up > - If after 10 seconds it's still hanging, it forces the closure > This means that at each reboot the server will be at the most down for > 10 > seconds. > > Is this what people in the real world do? Any gotcha? How do I check that > the event loop is empty? > > > -- Job board: http://jobs.nodejs.org/ New group rules: https://gist.github.com/othiym23/9886289#file-moderation-policy-md Old group rules: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to nodejs+unsubscr...@googlegroups.com. To post to this group, send email to nodejs@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/nodejs/87a61ad9-b69f-447f-b080-ccac8aec528b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
