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pend

dead-simple optimistic async helper

1.2.0
latest
Source
npm
Version published
Weekly downloads
19M
-0.82%
Maintainers
1
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Created

What is pend?

The pend npm package is designed to manage and limit the concurrency of asynchronous operations in Node.js applications. It provides a simple API to queue tasks and control how many of them are executed in parallel, making it easier to manage resources and improve the performance of applications that perform a lot of asynchronous operations, such as file I/O or network requests.

What are pend's main functionalities?

Limiting concurrency of asynchronous operations

This code sample demonstrates how to use pend to limit the concurrency of asynchronous operations. It creates a new Pend instance, sets a concurrency limit, and then queues several asynchronous operations. Pend ensures that only a specified number of operations run in parallel, and provides a callback for when all operations are completed.

const Pend = require('pend');

const pend = new Pend();
pend.max = 2; // Limit to 2 concurrent operations

function asyncOperation(callback) {
  setTimeout(() => {
    console.log('Operation completed');
    callback();
  }, 1000);
}

for (let i = 0; i < 5; i++) {
  pend.go((cb) => {
    asyncOperation(cb);
  });
}

pend.wait(() => {
  console.log('All operations completed');
});

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Package last updated on 23 Nov 2014

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