Asynchronous programming is simply allowing some portions of code to be executed on separate threads. It makes your applications perform better, be more responsive, and use the resources of the system they are running on to the fullest extent.

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Move uploaded file

As I mentioned in Node.JS fs.rename can not move files in right way. And it should be solved with stream piping. Please verify this code and answer questions in comments: ...
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33 views

Clojure core.async web crawler

I'm currently a beginner with clojure and I thought I'd try building a web crawler with core.async. What I have works, but I am looking for feedback on the following points: How can I avoid using ...
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41 views

Clock mux for allowing glitch-free muxing of asynchronous clocks

This clock mux is meant to allow glitch-free muxing between asynchronous clocks clk_a and clk_b via a (also asynchronous to both ...
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0answers
39 views

Asynchronous Array.map

I put together an asynchronous map function for Swift's Array using Grand Central Dispatch. It's called with a transform ...
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1answer
46 views

Solving the Shortest Path problem (little bit of TSP, too)

Some background info: I'm working at a shipping company and the company's web developer has been fired a week ago. My boss knew that I had some knowledge in web development, so until we get a new ...
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5answers
182 views

Calling many web services asynchronously

I need to process a bunch of completed orders (thousands). To make it faster, I'm using a SemaphoreSlim to schedule a number of orders to be processed in parallel. ...
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1answer
60 views

Shorten my asynchronous DB queries, using async.js module

I am using Node.js Express.js node-mysql.js async.js I am making multiple asynchronous queries to my DB, but every query relies on the previous one's results, so I decided to use the ...
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0answers
51 views

Validating asynchronous behavior

I have a large service application I designed; it's a solution made up of about 30 projects. I was wondering if anyone could point me in the right direction regarding using the Task-based ...
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2answers
72 views

Read multiple files async

I want to read multiple files simultaneously and apply the same function on data. This code works correctly, but can someone please suggest any better way of writing this? ...
6
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1answer
60 views

Blocking and async UDP communication with an IR camera

I'm writing a Java application to control a custom IR research camera that will be installed on an aircraft. The camera connects to the the computer using UDP sockets via a direct LAN cable. The ...
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105 views

Simple Async Google Maps initializer with AngularJS

Here is a simple reusable AngularJS factory I came up with to initialize Google Maps Asynchronously, which somehow does not seem ...
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1answer
74 views

Is it a good idea to have a public inner class as a runner for a service?

I have a service class that handles recipe management using a piquetteClient (piquette is a web app with a rest API that can run puppet scripts). The thing is ...
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1answer
87 views

Is this SqlConnection / SqlCommand async wrapper both efficient and correct?

This is my first time writing async code, I intend to inject the interface IConnection into other classes in my project. Can you please tell me if the implementation class Connection, is the correct ...
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3answers
105 views

Running 2 sets of tasks at the same time

Currently, my team and I have 2 types of databases that are updated periodically, SQL Server and Access. Also, we run specialized reports based on those databases. Basically, we have 4 tasks that ...
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1answer
60 views

Tasks and WaitAll\WhenAll

Could you help me to speed up/optimize this code: ...
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1answer
65 views

Is this a sensible way to throttle duplicate requests in a HttpModule?

I'm writing a method to throttle duplicate requests taking place within multiple HttpModule instances within a web application. Currently I have the following ...
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1answer
67 views

Async function with slow web reference(web service) slowing down webpage

Is there a way to make a threading/async post with a web reference not slow down the whole website just because the web reference takes a long time to return a response? I have a send email function ...
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1answer
94 views

.NET WCF Activator for sync and async calls

I decided to re-write my code responsible for WCF calls, as all of my methods had try-catch-...
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1answer
108 views

Is this a good approach to loading JavaScript files asynchronously?

I want to load JS files asynchronously to speed up page loading, but also need to execute JS code only once the scripts finish loading (so I need a way to implement callbacks). I based this off of ...
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0answers
86 views

Questions regarding the use of Requests Futures for accessing REST URLs

This is a much simplified version of the real code focusing just on the handling of Futures from Requests Futures. I have a few questions: I had to implement my own version of ...
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1answer
85 views

Oauth 2.0 handler functions for Tornado

With Tornado 3.2 they made some updates to auth module and have updated the code. Earlier I was using open id for Google login, since it will be deprecated in the future I am switching the code to ...
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1answer
129 views

Verifying the type of an AggregateException's inner exception in a unit test

I've got the following code inside an integration test. ...
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1answer
124 views

Async method with multiple tasks

I'm trying to make my ASP.net Web API methods asynchronous. This method is in the Business Logic layer of my N-tier. I'm waiting for the result from my 1st task and use it on the 2nd task, but I ...
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2answers
157 views

Simple Deferred / Promise pattern in JavaScript

I've wrote a very simple implementation of Deferred / Promise pattern (inspired by jQuery's $.deferred) for my tiny project (which does not use jQuery) It can ...
2
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1answer
90 views

nodejs grunt plugin using async module

I'm looking for some code review of my usage of async. Mainly why this does not work without the done = this.async() method and why I don't have to invoke 'done()' ...
2
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1answer
63 views

Views Counter made in Python, Gevent and MongoDB

I've created a Views Counter in Python, Gevent and MongoDB (Flask is also included in the full stack as you can see from the context issue in the code). My gut still tells me that it can be still ...
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2answers
89 views

Asynchronous Pattern

I have an n-tier solution which consist of DAL,BL and a ASP.net WebAPI project. I'm new with Asynchronous Pattern and I'm trying to add it to my Framework. Am I doing asynchronous pattern correctly? ...
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1answer
99 views

Minimal but complete AMD implementation

I've got a minimal implementation (under 2k minified) of the Asynchronous Module Definition API. So far it handles all of the required stuff (I think; it passes the relevant unit tests, anyway), and ...
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1answer
34 views

ThreadSafe IsoStorageManager

This is a continuation of the last thread. I wanted to add a thread-safety and I was considering AwaitableCriticalSection and Task+Mutex. I ended up with mutex; it can be a bit slower but it would ...
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1answer
327 views

Async Log4net logging handler - High CPU usage on async call

I've got a LoggingMessageHandler that incoming requests on my WebApi application filter through. ...
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1answer
109 views

Cleaning up nested promises in Cloud function

I am writing the Cloud function for Parse whose purpose is to update my database with a provided array of data objects. The main problem are the nested promises, which doesn't look right. Any help ...
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1answer
72 views

How to simplify this promise-driven animation code?

Inspired by this question on StackOverflow I've attempted to code such animation, mostly to get some more practice with async, promises and Q.js. Here's what I got: (Live demo) ...
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2answers
115 views

Promises and chained calls

I've realized JS callback hell and I started looking into Promises libraries. After reading some articles I decided to start with BluebirdJS. I didn't realise how to properly use them yet, because ...
5
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1answer
279 views

Load JSON file into model using Javascript / jQuery (deferred, asynchronous)

As a beginner I am always determined to improve myself. I've got written the following Code using jQuery that is working fine. However, I am sure that there are cleaner ways for achieving the same. ...
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2answers
351 views

Echo server with CompletableFuture

I recently wrote a simple echo server in Java 7 using the NIO APIs so it was asynchronous and non-blocking. Then I decided, as a learning experience, to redo it with Java 8 hoping to use a more ...
5
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1answer
84 views

AngularFire Tic Tac Toe Game

I am building a Tic Tac Toe game with AngularJS and making it online playable with AngularFire. The Tic Tac Toe logic is all there so this question concerns Angularfire a little bit more. I want to ...
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0answers
52 views

Thread Safe Events while utilizing EAP

This is my code for a server using EAP (Sockets). Is AsyncOperation.Post is the right way to raise thread safe events? AsyncOperation.Post states: Invokes a delegate on the thread or context ...
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2answers
241 views

Interface implementations: sync methods in terms of async methods

Say I have an interface and I want to expose both synchronous and asynchronous options for performing an action: ...
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2answers
592 views

Wait until all files are loaded asynchronously, then run code

I'm an experienced programmer but not too great at JavaScript so I'm looking to see if I'm doing this 'right'. I want to have several files loaded in (Ajax or really AJAJ) and, once loaded, run some ...
4
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1answer
458 views

Optimizing async joins for mongodb (mongoose) using async.js

I'm building a media viewer web app for a kiosk in node that uses data in mongo. To render the viewer, it gathers together all the Asset objects (representing video files), each of which belong to a ...
6
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1answer
711 views

Writing highly asynchronous code

I am writing a new web service that will be performing a lot of large data load operations. To do so I am moving the data to a temporary table then merging the data in to the live data via a stored ...
2
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1answer
122 views

Is this a good use of Async in F#?

I've hacked together some code to read the content from a sequence of files: ...
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0answers
67 views

Queue with “unlimited” buffer in Go

This is small piece of bigger puzzle, but usable by its own. It an attempt to have a nonblocking queue with "unlimited" (besides memory size) buffer length. Got unit-tests 100% statement coverage, it ...
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310 views

Aysnc call back to UI Thread

My main DLL is a .Net one that has an async running method and fires an event when it's done: ...
7
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1answer
832 views

Continuously receive messages async from Azure Service Bus Queues

I'd like to get input on my approach of continuously receiving messages from an Azure Service Bus queue using the async part of the library. My main concern being whether its "safe" to use ...
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2answers
4k views

Android AsyncTask, HTTP Request and Parsing

I am working on Android applications for last 2 years and about 80% applications I have developed involve web-services consumption followed by some sort of XML or JSON parsing. Initially, when I had ...
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2answers
1k views

BackgroundWorker vs TPL ProgressBar Exercise

I wanted to fiddle around with the BackgroundWorker and Task classes, to see how I would implement a given task with these two ...
3
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0answers
110 views

Semi-synchronous Programming in Python

I just took a stab at creating a library for something I'm dubbing semi-synchronous programming (async + dependencies). It's rather dense, but I'd really appreciate a quick code review to ensure I'm ...
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0answers
63 views

Paginated Backbone.Collection subclass

This is a subclass of Backbone.Collection with a method fetchNextPage that returns a Q promise. To find out the next page's ...
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1answer
193 views

Best way to handle the error in async node

To catch errors, I have written if-else blocks in every function which looks bad. Please suggest a better way to handle errors in async node. ...