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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6
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2answers
48 views

Buffering of fast changing datapoints or events

The following class implements a buffer which captures fast changing datapoints or frequently raised events and dispatches them in batches. It will asynchronously call a processing function for the ...
3
votes
3answers
101 views

Implementing a POC Async Web Crawler

I've created a small proof of concept web crawler to learn more about asynchrony in .NET. Currently when run it crawls stack overflow with a fixed number of current requests (workers). I was ...
8
votes
2answers
155 views

Concurrent Task Waiter 2

This is an iteration of my previous question: Concurrent Task Waiter Summary from before: I have some code designed to simplify managing multiple asynchronous operations. The code creates ...
1
vote
1answer
49 views

Concurrent Task Waiter

I have some code designed to simplify managing multiple asynchronous operations. The code creates callback actions that, when executed by the asynchronous operation, track which asynchronous methods ...
2
votes
1answer
30 views

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: ...
5
votes
0answers
108 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 ...
2
votes
0answers
58 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 ...
2
votes
0answers
66 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 ...
3
votes
1answer
62 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 ...
6
votes
5answers
243 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. ...
3
votes
1answer
64 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 ...
4
votes
2answers
64 views

Fetch details from server

I am using this code to fetch some details from server from my android app. How can I improve it? Here I am also transferring some data from one activity to another. This is how I have written my ...
1
vote
0answers
52 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 ...
3
votes
2answers
96 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
votes
1answer
66 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 ...
4
votes
0answers
346 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 ...
2
votes
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 ...
5
votes
1answer
116 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 ...
6
votes
3answers
129 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 ...
2
votes
1answer
76 views

Tasks and WaitAll\WhenAll

Could you help me to speed up/optimize this code: ...
3
votes
1answer
97 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 ...
1
vote
1answer
79 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 ...
3
votes
1answer
131 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-...
6
votes
1answer
123 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 ...
1
vote
0answers
97 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 ...
4
votes
1answer
140 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 ...
5
votes
1answer
213 views

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

I've got the following code inside an integration test. ...
2
votes
1answer
181 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 ...
2
votes
2answers
192 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
votes
2answers
908 views

Generic HTTP using Android Asynctask

I have developed a generic HTTP functionality using Android Asynctask and Apache HTTP client. Please review the code and let me know if it is the right way of doing or there are other ways to achieve ...
2
votes
1answer
99 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
votes
1answer
71 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 ...
3
votes
2answers
95 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? ...
5
votes
1answer
117 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 ...
1
vote
1answer
38 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 ...
1
vote
1answer
475 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. ...
2
votes
1answer
139 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 ...
2
votes
1answer
74 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) ...
0
votes
2answers
139 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
votes
1answer
339 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. ...
6
votes
2answers
453 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
votes
1answer
97 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 ...
2
votes
0answers
55 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 ...
6
votes
2answers
280 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: ...
4
votes
2answers
827 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
votes
1answer
555 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
votes
1answer
904 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
votes
1answer
127 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: ...
3
votes
0answers
69 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 ...
3
votes
0answers
375 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: ...