Linux Kernel's `io_uring` Interface Raises Concerns Over Complexity and Userspace Risks

Why Your Python Loops Are Creating the Wrong Functions

This story was originally published on HackerNoon at: https://hackernoon.com/why-your-python-loops-are-creating-the-wrong-functions [https://hackernoon.com/why-your-python-loops-are-creating-the-wrong-functions]. Learn why Python functions created in loops often return the same value. Understand closure cells, late binding, and two standard fixes. Check more stories related to programming at: https://hackernoon.com/c/programming [https://hackernoon.com/c/programming]. You can also check exclusive content about #python [https://hackernoon.com/tagged/python], #for-loop-in-python [https://hackernoon.com/tagged/for-loop-in-python], #effects-of-coding-on-my-brain [https://hackernoon.com/tagged/effects-of-coding-on-my-brain], #how-to-learn-coding [https://hackernoon.com/tagged/how-to-learn-coding], #python-hidden-behavior [https://hackernoon.com/tagged/python-hidden-behavior], #factory-function [https://hackernoon.com/tagged/factory-function], #default-argument-capture [https://hackernoon.com/tagged/default-argument-capture], #hackernoon-top-story [https://hackernoon.com/tagged/hackernoon-top-story], and more. This story was written by: @sohelalam79 [https://hackernoon.com/u/sohelalam79]. Learn more about this writer by checking @sohelalam79's [https://hackernoon.com/about/sohelalam79] about page, and for more stories, please visit hackernoon.com [https://hackernoon.com]. Python functions created inside loops often return the same value because closures capture a variable, not a snapshot of its value. This behavior is known as late binding. When the loop finishes, all functions reference the final value of the loop variable. This article explains why it happens and demonstrates two standard solutions: default argument capture and factory functions.

How I Turned a OnePlus 3T into a postmarketOS Home Server

This story was originally published on HackerNoon at: https://hackernoon.com/how-i-turned-a-oneplus-3t-into-a-postmarketos-home-server [https://hackernoon.com/how-i-turned-a-oneplus-3t-into-a-postmarketos-home-server]. How to turn your old phone to a personal server. Check more stories related to programming at: https://hackernoon.com/c/programming [https://hackernoon.com/c/programming]. You can also check exclusive content about #linux [https://hackernoon.com/tagged/linux], #server [https://hackernoon.com/tagged/server], #mobile [https://hackernoon.com/tagged/mobile], #diy [https://hackernoon.com/tagged/diy], #postmarketos [https://hackernoon.com/tagged/postmarketos], #oneplus-3t [https://hackernoon.com/tagged/oneplus-3t], #postmarketos-home-server [https://hackernoon.com/tagged/postmarketos-home-server], #hackernoon-top-story [https://hackernoon.com/tagged/hackernoon-top-story], and more. This story was written by: @arttttt [https://hackernoon.com/u/arttttt]. Learn more about this writer by checking @arttttt's [https://hackernoon.com/about/arttttt] about page, and for more stories, please visit hackernoon.com [https://hackernoon.com]. How to turn your old phone to a personal server.

Linux Kernel's `io_uring` Interface Raises Concerns Over Complexity and Userspace Risks

This story was originally published on HackerNoon at: https://hackernoon.com/linux-kernels-io_uring-interface-raises-concerns-over-complexity-and-userspace-risks [https://hackernoon.com/linux-kernels-io_uring-interface-raises-concerns-over-complexity-and-userspace-risks]. Learn how Linux io_uring improves I/O performance, the engineering risks it introduces, and practical strategies for safe production deployment. Check more stories related to programming at: https://hackernoon.com/c/programming [https://hackernoon.com/c/programming]. You can also check exclusive content about #linux [https://hackernoon.com/tagged/linux], #io_uring [https://hackernoon.com/tagged/io_uring], #linux-kernel [https://hackernoon.com/tagged/linux-kernel], #asynchronous-io [https://hackernoon.com/tagged/asynchronous-io], #sqpoll [https://hackernoon.com/tagged/sqpoll], #completion-queue [https://hackernoon.com/tagged/completion-queue], #submission-queue [https://hackernoon.com/tagged/submission-queue], #systems-programming [https://hackernoon.com/tagged/systems-programming], and more. This story was written by: @kornilovconstru [https://hackernoon.com/u/kornilovconstru]. Learn more about this writer by checking @kornilovconstru's [https://hackernoon.com/about/kornilovconstru] about page, and for more stories, please visit hackernoon.com [https://hackernoon.com]. The article examines Linux's io_uring interface from a systems engineering perspective, explaining how shared ring buffers, SQPOLL, multishot operations, and linked requests deliver significant performance gains while introducing concurrency, memory, and maintenance risks. It pairs these mechanisms with mitigation strategies and real-world deployment scenarios to help engineers decide when io_uring is appropriate and how to use it safely.

Building Fun Web Servers With PowerShell

This story was originally published on HackerNoon at: https://hackernoon.com/building-fun-web-servers-with-powershell [https://hackernoon.com/building-fun-web-servers-with-powershell]. How to build a simple fun functional server in PowerShell, where the function name is the url. Check more stories related to programming at: https://hackernoon.com/c/programming [https://hackernoon.com/c/programming]. You can also check exclusive content about #powershell [https://hackernoon.com/tagged/powershell], #web-development [https://hackernoon.com/tagged/web-development], #server [https://hackernoon.com/tagged/server], #powershell-servers [https://hackernoon.com/tagged/powershell-servers], #powershell-webdev [https://hackernoon.com/tagged/powershell-webdev], #fun-module [https://hackernoon.com/tagged/fun-module], #powershell-routes [https://hackernoon.com/tagged/powershell-routes], #hackernoon-top-story [https://hackernoon.com/tagged/hackernoon-top-story], and more. This story was written by: @mrpowershell [https://hackernoon.com/u/mrpowershell]. Learn more about this writer by checking @mrpowershell's [https://hackernoon.com/about/mrpowershell] about page, and for more stories, please visit hackernoon.com [https://hackernoon.com]. A fun technique for building web applications with PowerShell. Functions in PowerShell can be named anything, including urls. See how simple it is to make your own fun server. Learn about a fun project.

Designing Event-Driven Merchant Onboarding With Kafka

This story was originally published on HackerNoon at: https://hackernoon.com/designing-event-driven-merchant-onboarding-with-kafka [https://hackernoon.com/designing-event-driven-merchant-onboarding-with-kafka]. Learn how Kafka, business events, and event-driven architecture help merchant onboarding platforms scale beyond centralized workflow orchestration. Check more stories related to programming at: https://hackernoon.com/c/programming [https://hackernoon.com/c/programming]. You can also check exclusive content about #event-driven-architecture [https://hackernoon.com/tagged/event-driven-architecture], #apache-kafka [https://hackernoon.com/tagged/apache-kafka], #merchant-onboarding [https://hackernoon.com/tagged/merchant-onboarding], #backend-for-frontend [https://hackernoon.com/tagged/backend-for-frontend], #microservices [https://hackernoon.com/tagged/microservices], #micro-frontends [https://hackernoon.com/tagged/micro-frontends], #event-sourcing [https://hackernoon.com/tagged/event-sourcing], #distributed-systems [https://hackernoon.com/tagged/distributed-systems], and more. This story was written by: @ritvikpandya [https://hackernoon.com/u/ritvikpandya]. Learn more about this writer by checking @ritvikpandya's [https://hackernoon.com/about/ritvikpandya] about page, and for more stories, please visit hackernoon.com [https://hackernoon.com]. The article argues that merchant onboarding platforms become increasingly difficult to scale when built around centralized workflow orchestration. By modeling onboarding as a stream of business events powered by Kafka, organizations can distribute responsibility across services, improve team ownership, strengthen resilience, and support regional and product-specific complexity without continuously expanding a central orchestrator.