As per the documentation <https://cloud.google.com/appengine/docs/flexible/custom-runtimes/build#lifecycle_events> App Engine sends a SIGTERM signal to your application container running within the instance to notify your application that it is about to be shutdown.
You can read from the stdin in Node.js <https://nodejs.org/api/process.html#process_signal_events>to run a function once the signal is received. Normally you should have 30 seconds to receive the signal and complete the function, but this is not guaranteed and may be cut short due to unforeseen network and/or resource issues as explained in the documentation. - Note that Google Groups is for general product discussions. For technical support in setting up the shutdown hook it is recommended post your detailed questions <https://stackoverflow.com/help/how-to-ask>to Stack Overflow <https://cloud.google.com/support/docs/stackexchange>using the supported Cloud tags. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/7bf94804-0d10-4f4a-b7d1-91d23df62c8f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
