Express.js shutdown hook

Question

In Express.js, is there someway of setting a callback function to be executed when the application shuts down?

Answer 1

You could use the node.js core process 'exit' event like so:

process.on('exit', function() {   // Add shutdown logic here. }); 

Of course, the main event loop will stop running after the exit function returns so you can't schedule any timers or callbacks from within that function (e.g. any I/O must be synchronous).

Answer 2

There is process.on('exit', callback):

process.on('exit', function () {   console.log('About to exit.'); });