Node.js console.log performance

Question

If your Node.js code is littered with console.log statements are you inviting performance issues? Is it worth debug/production toggling this on/off? I realized logging is import

Answer 1

console.log calls in nodejs are synchronous(!) and block the event loop. I just experienced that when I logged the results from executing (asynchronous) sql queries with pg. Logging only 20 items and their (few) properties decreased the performance from 3ms to 300ms on my local machine.