> > >> this should only happen if you are doing too much sync processing. >> > Everything is async (i.e. any call that may take a non-predictable amount > of time is an async call). > > I don't understand what you mean here. An async function in node is a non-blocking function. This means that is must return quickly and provide it's response later in a callback. Both blocking functions and non-blocking functions can take a non-predictable amount of time to do their work. Especially if I/O in involved. The difference is that non-blocking functions don't block the event loop and return *before* during their work (usually I/O wait in node)
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