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.
3
votes
3answers
58 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 ...
0
votes
0answers
18 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
40 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
26 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
81 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
49 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
53 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
50 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
204 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
61 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 ...
1
vote
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 ...
3
votes
2answers
85 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
62 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 ...
3
votes
0answers
165 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
95 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
109 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
65 views
2
votes
1answer
79 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
71 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
112 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
115 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
89 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
103 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
149 views
Verifying the type of an AggregateException's inner exception in a unit test
I've got the following code inside an integration test.
...
1
vote
1answer
140 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
172 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
1answer
93 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
70 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
91 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
103 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
36 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
389 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
120 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
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)
...
0
votes
2answers
124 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
305 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
394 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
88 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
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 ...
6
votes
2answers
257 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
699 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
498 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
795 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
125 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
68 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
350 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
votes
1answer
908 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 ...
2
votes
4answers
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 ...
11
votes
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 ...
