Questions tagged [asynchronous]
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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Idea for writing asynchronous data processing chains easier (similar to `ReactiveX`) and its implementation
I'm writing my own library, that is for asynchronous network communication. and then, wanna write my own HTTP proxy server for load-balancing connections to backend servers with it.
when I'm using <...
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Using asyncio and aiohttp in classes
To better familiarize with async requests I wrote a very simple scraper that relies on aiohttp to retrieve some basic information from the product page (product ...
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Render multiple SSRS reports in parallel
This service takes in a report request object that can contain multiple reports that need to be rendered. This code works but I'm not sure if I've implemented anything wrong. Note the ...
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Asynchronous web scraping
This is my solution to a "vacancy test" task.
I'm not sure at all if I have correctly implemented the task, but here is my solution.
Goals of code:
Parse rows of table from a URL and ...
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Fastapi with Aiohttp not providing expected results
I am new to asynchronous programming in python. Below are two scripts(which perform the same operation) one in Fastapi + aiohttp while other is basic Flask + requests library:
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Multithreaded logger
I made a multithreaded logger years ago when I was still a total newbie. It "worked" (when it didn't deadlock). Now that I'm slightly less newbie I'd like to get some criticism on this new ...
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C# asynchronous tasks training (turn-based simulation)
I know embarassingly little about asynchronous programming in C#, so decided to start catching up. It would help me a lot if anyone checked this basic example I've created.
Assumption: we're creating ...
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CompletableFuture in Java, code that gets responses from different websites using HttpClient in Java. What can I do better?
I have a static list of Strings (website urls), I am trying to connect to them and get responses, in syncRequests method, I am using HttpClient in synchronous manner, in asyncRequests method, I am ...
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Stoppable asyncio thread class
A threading.Thread subclass intended for running an asyncio loop that has the ability to be stopped gracefully from another ...
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Starting with asynchronous JS and promises
I've learn to code almost alone, so I really need some ideas/advice, as it started to get really difficult to advance.
Because this is mostly server side, I can't provide a running snippet, but yet it'...
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Alternative class to imitate AsyncTask class (deprecated) with Thread and Handler classes
As the title says, I have created an alternative class to imitate AsyncTask class (deprecated) with Thread and Handler classes but i feel uncomfortable to use it.(the app works fine with my class) Can ...
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vuejs: best practices with vuex when you call multiple actions [closed]
I am working on a project in which I am using vue js 2 and electron ,
to manage the state I use vuex , I have at least 20 actions to call
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Send multiple REST requests at the same time. (node)
Below is a (very) simplified version of a function I made that creates multiple REST requests to gather needed information.
Things to note:
One of the REST calls is dependent upon the output of ...
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Async tcp socket client: send multiple requests with one connection
I'm new to socket programming and c++. I have a the following method that sends an array to server and receives sum of the array, I tried to make it async.
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Node.js package that retrieves data from an API, formats it and sends it out via email to a distribution list
I've created a Node.js package that retrieves data from Icinga (a monitoring platform), formats it and passes it off to a class that generates some HTML and then sends it all out as an email.
The ...
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A method that calls multiple async tasks with error handling, done the right way?
I've got a method, CheckForValue(), that uses named pipes to send a message to another process running locally, and then receive a message from that process, ...
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design to send multiple type http request
I have to send multiple HTTP requests where their payload will be different, type will be different, headers will be different, URL will be different etc. The code I have right now is
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Am I using the same Typescript variable? [closed]
I am passing a in as a parameter and want to return b.
This works, however I feel like it is wrong because I shouldn't have to ...
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Adding some wait time between API requests to avoid overloading the server
In Shopify a product can belong to a collection.
I have written a method which accepts an organisation. It would then get a list of collections that this organisation has from Shopify. Finally, it has ...
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VBA-Sync code feedback
I was hoping to get some input on a class module I'm designing to abstract away the boilerplate of utilizing asynchronous queries in VBA. cQueryable supports both synchronous and asynchronous queries. ...
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Nodejs async with express server
I use the following code which works as expected. The code uses open ID connect to login user. Because I'm pretty new to node and express, it will be great if I can ...
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Synchronous logging of asynchronous retrieved folder info
I started learning functional programming with JavaScript and I have the basic idea of Functors, container types and etc. I was trying to experiment with arrays but I don't know how to solve the ...
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I'm just starting out with tasks. I need to know if there's a better way to do TAP for socket handling (serving a request)
I've got this quick and dirty little console app in C# to serve an HTTP/HTML page.
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Email sender worker-pool skeleton in go
How to refactor this go code to make it more easy to understand and to maintain?
It is email sender worker-pool skeleton.
To understand the working-pool logic I coded it without real email client and ...
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NodeJS executing multiple database queries using async library
I have a use case where I need to run multiple tasks in series. Each task is required to perform some database operations. In my code step_1, ...
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Parse and clean log files
I have the code below, which works successfully, and is used to parse, clean log files (very large in size) and output into smaller sized files. This would take about 12-14 mins to process 1 GB worth ...
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Sending emails asynchronously
In a part of our system a lot (I'm not sure how many, probably a couple thousand) of emails are being sent to the users at a specific time of the month. It seems this kills the server.
So I was asked ...
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User Access Authorization for Web Resources
Im refactoring a large internal legacy application and part of the stuff I want to get rid is the widespread code repetition.
I'm starting with the way the website checks if a User can access a ...
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Chat using async Python and sockets
I am trying out websockets using the python async framework aiohttp.
Basically I have created a game which will include multiple ...
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A thread-safe typed Promise implementation in Java for Android
Introduction
I've created a typed Promise implementation in Java for Android, borrowing ideas from this article for a JavaScript implementation, by Forbes Lindesay.
To allow for "asynchronicity", my ...
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Python 3.6+ Conventions for fetching paginated data
I find myself often encountering a use case where I need to fetch paginated data, where I need all of the data. Currently I use something similar to below to handle these cases:
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Wrapping an asynchronous generator in Python
Since Python 3.6 and PEP 525 one can use asynchronous generator:
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Awaiting the completion of a server request
I faced the following problem.
I have a Server object server which exposes TriggerStateChangeAsync() which return an ...
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Best approach on handling function that returns either a promise or just synchronous code [closed]
I wrote some code and I'm trying to get some feedback on it. I'll try to summerize the essential only. I have a function that based on a condition returns a promise or something else:
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create vscode tree item extesion
I use the following code to add tree item to vscode extension, Im getting the data and build the tree according to the entries I got, the code works.
As I new to typescript I appreciate your feedback'...
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Asynchronous Web Crawler with Pyppeteer - Python
This weekend I've been working on a small asynchronous web crawler built on top of asyncio. The webpages that I'm crawling from have Javascript that needs to be executed in order for me to grab the ...
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Asynchronous TCP network server with a packet system
So I'm writing a game emulator and would like some advice after finishing the networking. It is designed to accept multiple connections, and process messages from all of them.
Here is just a brief ...
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HTTP download function in Rust (async/await)
Why am I fighting the compiler? - Wrote this, which works, but I feel like I'm breaking every rule in the book:
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Wordcloud from all answers of a user here on CR
Since I haven't really used Python's new async features yet, I took some older code of mine, which took all of my answers here on Code Review and generated a word cloud from them, and updated it to ...
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Write a wrapper to REST API with asyncio
I want understand how to correctly structure a functional asyncio-based program.
The code below wraps two external APIs to provide the client a simple ...
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Can this async method be improved or simplified
I was tasked to write process that initially seemed like a straight forward thing. "Fetch data from database, create a cache object, and assign this data to it. Use existing class to model this after."...
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Dealing Synchronous Request in Asynchronous Code
Problem
I am trying to convert my synchronous code to an asynchronous implementation. Using aiohttp I was able to almost get where I want. My problem is how to ...
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HTTP Client - Best practices
I've made a HTTP client and would like some tips to improve my code, it's supposed to be built for xamarin forms but should work with any implementation.
My goal of this project was to learn more ...
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Python: Asyncio object-oriented style
I'm seeking a review of some code I've written for a small personal project. The project is not yet mature enough for any domain specific details to be of concern - but I'm happy to provide further ...
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Asynchronous logging using custom log4j appender and ExecutorService
I have a requirement to send emails when certain errors are logged(using log4j 1.2.17). But the SMTP appender sends emails in a synchronized manner. I can not use the AsyncAppender either. So I have ...
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Using Reactive Extensions in an Asynchronious Way
I am new to Reactive Extensions, I have the requirement to consume PairCollection<IPointCloud> which are fed into a service which performs a very expensive ...
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