Great Node.js!! I do love it.
Not sure if I can post question here. Apologized if I am wrong.
I am wondering how can I finish the request and do something time
consuming, e.g. email/file conversion...etc.
I've tried the following four ways, but all of them take long time to
return the response in browser.
Is there any way I can do something after the request is finished? Just
like PHP FPM *fastcgi_finish_request()* in Express Project?
#1 Use res.render callback
function(req, res){
res.render('someview', function(err, html){
if (err){ console.log('debug-err:', err);
res.send(html);
var result = 1;
for (var i = 0, j = 10; i < 10000000000; i++){
result = result + i + j;
}
console.log('debug',result);
});
}
#2 Use setTimeout:
function(req, res){
res.render('someview');
setTimeout(function(){
var result = 1;
for (var i = 0, j = 10; i < 10000000000; i++){
result = result + i + j;
}
console.log('debug',result);
}, 0);
}
#3 Use process.nextTick:
function(req, res){
res.render('someview');
process.nextTick(function(){
var result = 1;
for (var i = 0, j = 10; i < 10000000000; i++){
result = result + i + j;
}
console.log('debug',result);
});
}
#4 Simply do it, because res.render won't block the I/O
function(req, res){
res.render('someview');
var result = 1;
for (var i = 0, j = 10; i < 10000000000; i++){
result = result + i + j;
}
console.log('debug',result);
}
Appreciated for any explanation for understanding Node.js event I/O. Thank
you very much :)
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