On Aug 20, 2014, at 4:27 PM, Aria Stewart <[email protected]> wrote:
>
> The while loop is blocking -- it spins, doing useless work and NOTHING else
> until it expires. Your entire node process is hung during this time, so both
> requests "wait".
>
> Delaying with:
>
> setTimeout(function() {
> db.users.find({}, function(err, users) {
> callback(users);
> });
> }, long ? 5000 : 0);
>
> would do what you want, and yield the event loop in the mean time.
>
> Node only does one thing at a time -- setTimeout is "call me when this time
> has passed; do what you need to until then"; while (stuff) is "do nothing but
> this until...."
In addition, note that you are not handling errors. By convention, a callback
should accept err as its first argument, which will be null if there is no
error.
db.users.find({}, function(err, users) {
callback(err, users);
});
Or more simply:
db.users.find({}, callback);
Also by convention, a callback should be the last argument.
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