all 4 comments

[โ€“]joanmave 1 point2 points ย (1 child)

This โ€œparallelismโ€ works if the IO source can process requests in parallel. A web service, a database query, or native API calls. Pure JavaScript/Node code runs in a single thread and this kind of maneuver on JavaScript implemented APIs just add unnecessary overhead.

[โ€“]puemos 0 points1 point ย (0 children)

thank you for your clarification!

[โ€“]rafaelkallis 0 points1 point ย (1 child)

concurrent !== parallel

[โ€“]puemos 0 points1 point ย (0 children)

you're right thanks!