async

Async utilities for node and the browser (by caolan)

Async Alternatives

Similar projects and alternatives to async

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better async alternative or higher similarity.

async reviews and mentions

Posts with mentions or reviews of async. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-04-16.
  • Avoid the Promise.all pitfall
    1 project | dev.to | 12 Oct 2023
    Well you could just install the async package which has lots of useful functions like mapLimit which will reduce the burden and only run a number in parallel.
  • What is this callback in async.parallel function?
    1 project | /r/learnprogramming | 8 Aug 2022
    Have you checked out the docs for the async library they are using?
  • How to limit concurrency with Python asyncio?
    1 project | /r/codehunter | 22 Apr 2022
    Edit:2. What's a good library that takes care of common async patterns? (Something like async)
  • I Avoid Async/Await
    7 projects | news.ycombinator.com | 16 Apr 2022
    Async/await is certainly not promises. In fact it would be much better implemented without promises as I proposed here: https://es.discourse.group/t/callback-based-simplified-async...

    I would even say that async/await is anti-promise, it takes the main functionality of promises, a caching layer for results and errors that allows you to add the code continuation later and elsewhere (which is a major footgun imo) and coerces the execution flow back to going on the next line and provided immediately at compile time which results in a cleaner flow but not as clean, stateless, efficient or functional as if you were to remove the promises completely. Having an additional caching layer and state machine around every asynchronous function call is quite inefficient.

    The essence of async/await is not promises, it's the underlying javascript generator (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...) functionality combined with asynchronous code to stop and start the generator. It's the ability to pause and resume function execution based on asynchronous operations.

    The promise functionality, the caching layer and state machine for results is basically sanitized away with async/await, it becomes dead-weight computation. The only benefit of promises in async/await code is being able to more easily interface with other promise laden code which you don't need once you have async/await and a library like https://www.npmjs.com/package/async for more complex cases.

    Note that promises based async/await is also a mess of an implementation that breaks stack traces and needs to support tons of odd statement corner cases (basically anything that can return an object that could be a promise) whereas a continuation passing style async/await would be a much simpler implementation that would only apply to function calls and maintain stack traces. We get that stack trace support automatically because of the great work of whoever implemented javascript generators which seem to already carry stack traces across paused/resumed functions (if you don't wrap in promises).

  • What is the difference between async.waterfall and async.series
    1 project | /r/codehunter | 2 Apr 2022
    The nodejs async module: https://github.com/caolan/async provides 2 similar methods, async.waterfall and async.series.
  • JavaScript ES6 promise for loop [duplicate]
    1 project | /r/codehunter | 22 Mar 2022
    With async I'd simply use async.series().
  • Some questions about events and promises
    2 projects | /r/node | 18 Mar 2022
    I don't understand. Sure you could spawn a ton of processes, but things might be bogged down. There are utilities out there for doing work queues.... so only N workers are running at any one time. The async library has some utilities for that. https://github.com/caolan/async
  • Caolan Asyncjs vs Async/Await: Which One to Use for Async Operations in NodeJS
    1 project | dev.to | 28 Feb 2022
    The documentation of asyncjs is quite straightforward and easy to read. As we've only seen a couple of use cases in this article, I'd recommend to go the asyncjs documentation and check out other possibilities with the library. You can also try to replicate the same using async/await to solidify your understanding of where the library might still make sense.
  • [AskJS] How were asynchronous functions written before Promises?
    1 project | /r/javascript | 2 Feb 2022
    It basically was tons and tons of callbacks. They'd nest weirdly deep and be a pain to work with. If you're curious, here's a link to one of my favorite JavaScript libraries from those days - it gave you a bunch of neat utilities for dealing with async code.
  • Aren't promises just callbacks?
    1 project | /r/codehunter | 2 Jan 2022
    api(function(result){ api2(function(result2){ api3(function(result3){ // do work }); });}); Which I could use a library like async for anyway, with something like:
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Stats

Basic async repo stats
16
28,070
7.9
22 days ago

caolan/async is an open source project licensed under MIT License which is an OSI approved license.

The primary programming language of async is JavaScript.


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