Engrain by ByteRush

JS.16.05 SeniorCore — asked often

Promise pool, async queue and task scheduler

Comes up in: Coding

This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.

What it covers

  • run N at a time
  • results in order
  • stop on first error option
  • queue with pause/resume
  • priority
  • scheduler with dependencies (topological order)

Words you will know

—

What you will practise

  • implement promisePool and AsyncQueue

Interview questions this answers

  • Implement a promise pool with a concurrency limit.