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fastparallel

Zero-overhead asynchronous parallel/each/map function call

2.4.1
latest
Source
npm
Version published
Weekly downloads
274K
-25.15%
Maintainers
1
Weekly downloads
 
Created

What is fastparallel?

The fastparallel npm package is designed to handle parallel function execution efficiently. It allows you to run multiple asynchronous tasks in parallel and collect their results once all tasks are completed. This can be particularly useful for scenarios where you need to perform multiple I/O-bound operations concurrently.

What are fastparallel's main functionalities?

Parallel Execution

This feature allows you to execute multiple asynchronous tasks in parallel. The provided code sample demonstrates how to run two tasks concurrently and collect their results once both tasks are completed.

const fastparallel = require('fastparallel')();

function task1(arg, cb) {
  setTimeout(() => cb(null, 'result1'), 100);
}

function task2(arg, cb) {
  setTimeout(() => cb(null, 'result2'), 200);
}

fastparallel(null, [task1, task2], 'argument', (err, results) => {
  if (err) throw err;
  console.log(results); // ['result1', 'result2']
});

Error Handling

This feature demonstrates how fastparallel handles errors in parallel tasks. If any task encounters an error, the final callback receives the error, and the results array is not populated.

const fastparallel = require('fastparallel')();

function task1(arg, cb) {
  setTimeout(() => cb(null, 'result1'), 100);
}

function task2(arg, cb) {
  setTimeout(() => cb(new Error('Something went wrong'), null), 200);
}

fastparallel(null, [task1, task2], 'argument', (err, results) => {
  if (err) {
    console.error(err.message); // 'Something went wrong'
  } else {
    console.log(results);
  }
});

Other packages similar to fastparallel

Keywords

parallel

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Package last updated on 19 Oct 2021

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