I have a question: how do I can handle all uncaught Exception (operations/developer error will take all service down) for my node app. Then I can send an email alert to me whenever catch an error.
See Question&Answers more detail:osI have a question: how do I can handle all uncaught Exception (operations/developer error will take all service down) for my node app. Then I can send an email alert to me whenever catch an error.
See Question&Answers more detail:osYou can use process 'uncaughtException
' and 'unhandledRejection
' events.
Also remember that it is not safe to resume normal operation after 'uncaughtException
', because the system becomes corrupted:
The correct use of '
uncaughtException
' is to perform synchronous cleanup of allocated resources (e.g. file descriptors, handles, etc) before shutting down the process.
Example:
process
.on('unhandledRejection', (reason, p) => {
console.error(reason, 'Unhandled Rejection at Promise', p);
})
.on('uncaughtException', err => {
console.error(err, 'Uncaught Exception thrown');
process.exit(1);
});