Published: 2025-07-14 | Origin: /r/programming

The scenario describes an online retailer that faces significant problems during a flash sale where they received 742 orders for a product with only 500 units available, resulting in negative inventory. This situation stems from the challenges of managing inventory in distributed systems where multiple servers are processing requests concurrently. The sequence of "check inventory then charge customer" creates a race condition due to the brief interval where other orders can be placed. The article explains that while stronger locking mechanisms could theoretically resolve this issue, they would also degrade

Published: 2025-07-14 | Origin: /r/programming

Alvin Toffler's quote highlights that the true illiterates of the 21st century will be those unable to learn, unlearn, and relearn. In the rapidly changing tech landscape, marked by frequent new frameworks and AI advancements, the enduring value lies in fundamental principles of technology that remain stable over time. Understanding core concepts, such as memory management, data transfer in networks, and algorithm efficiency, is crucial as these truths apply both now and far into the future. Contrary

Published: 2025-07-14 | Origin: /r/programming

The author recounts a past experience with a lingering codebase element: a service that flagged certain users as part of an old application related to GDPR compliance. Although it was believed to be unused, it was still included in the “employee data” resource shared across the application landscape. The situation illustrates the principle known as Chesterton’s Fence, which emphasizes the importance of understanding the reasoning behind existing elements before deciding to remove them. In practice, the author highlights the challenge of verifying whether systems are truly obsolete

Published: 2025-07-14 | Origin: /r/programming

The content discusses the limitations of the Foreign Memory Access (FMA) and Foreign Function Interface (FFI) introduced in Java 22, which replace Unsafe/JNI but lack type safety. It highlights the issues of using `MemorySegment` for pointer types and how enums are treated as integers, leading to potential programming errors. Although jextract can produce better type-safe bindings from C header files, it operates independently of the standard APIs. The article suggests that developers can create their own type-safe API,

Published: 2025-07-14 | Origin: /r/programming

The blog post "What Color is Your Function?" by Bob Nystrom addresses challenges in handling asynchronous computations in programming language design, sparking discussions on platforms like Hacker News and Reddit. Although various solutions were proposed, none were universally accepted as perfect. In a 2026 roadmap announcement, Andrew Kelley introduced a novel I/O approach in Zig, detailed in Loris Cro's blog post. This approach is claimed to resolve the issue of function coloring. However, the author disputes this by examining function signatures

Published: 2025-07-14 | Origin: /r/programming

The author shares their experience of learning x86 assembly language, noting that the education they received at university was outdated, particularly given the transition to 64-bit processors. Despite this, they gained enough knowledge to understand compiled code, though they had not written significant x86 assembly themselves. To improve their skills during a lockdown due to the pandemic, they decided to focus specifically on x86-64 assembly, intentionally avoiding legacy topics. They plan to share their learning process through tutorials on their blog, emphasizing a

Published: 2025-07-14 | Origin: Hacker News

The LIGO Collaboration has announced the detection of an unprecedented black hole merger, designated GW231123, which resulted in a black hole over 225 times the mass of the Sun—the largest known to date. Detected on November 23, 2023, this event involved two massive black holes of 137 and 103 solar masses that spun together at incredibly high speeds to form an even larger black hole. This discovery challenges existing models of stellar evolution and prompts questions about how such a merger could occur

Published: 2025-07-13 | Origin: Hacker News

arXivLabs is a platform that enables collaborators to create and share new features for the arXiv website, emphasizing values of openness, community, excellence, and user data privacy. Individuals and organizations involved adhere to these principles. The platform encourages project ideas that would benefit the arXiv community. Additionally, users can receive operational status notifications via email or Slack.

Published: 2025-07-13 | Origin: /r/programming

The team at Diversio migrated their Postman API collections to Bruno over a weekend, allowing for an efficient transition to AI-assisted documentation by Monday. The guide provided outlines a practical step-by-step process for migrating to Bruno and enhancing API workflows with AI. Postman had served as Diversio's primary API toolkit since 2018, offering features like scriptable requests, variable templating, and chained workflows that allowed for seamless end-to-end API flows without manual adjustments. It was user-friendly for both engineers

Published: 2025-07-13 | Origin: /r/programming

The content describes a development environment that supports reproducible builds by default and allows projects to define their own JDK version for consistency across different stages. It provides access to a wide range of JDK versions from major vendors, facilitated by Foojay. An optional shell integration feature can automatically configure the correct JDK when entering a project directory. This setup is compatible with macOS and Linux on both x64 and ARM64 architectures. Additionally, users are prompted to run a specified command in their terminal.

Published: 2025-07-13 | Origin: Hacker News

The content emphasizes the importance of user feedback and provides instructions for setting up an open-source CapCut alternative. Users must ensure certain services are installed, start the database and Redis, and configure environment variables in a `.env.local` file. Specific commands are provided for running database migrations and starting the development server, with the application accessible at `http://localhost:3000`. However, contributors are advised to wait for project stabilization due to rapid developments and potential breaking changes. The document encourages contributions and references a

Published: 2025-07-13 | Origin: Hacker News

The content discusses the Android Reverse-Engineering Workbench for Visual Studio Code (VS Code) called APKLab, which integrates several open-source tools for app analysis, including Quark-Engine, Apktool, Jadx, and others. Users are informed that all feedback is valued and can view additional documentation for qualifiers. To use APKLab, certain prerequisites are required, such as JDK 8+, specific versions of Quark-Engine and ADB, which should be confirmed through terminal commands. The

Published: 2025-07-13 | Origin: Hacker News

The X Window System uses a text file called rgb.txt to map color names to RGB values. This file was included with X11 installations and is typically found in the directory <X11root>/lib/X11/. While the color names are widely used by graphic designers, there is no standardization, resulting in inconsistencies and some colors having multiple names. The list's origins trace back to X10 release 3 in 1986 and evolved through several X11 releases, eventually reaching a comprehensive version

Published: 2025-07-13 | Origin: /r/programming

Cloudflare Tunnel is an effective tool for securely exposing local Docker services, such as web apps and APIs, to the internet without the complications of firewalls, public IPs, or VPNs. It uses a lightweight daemon called cloudflared to create secure connections from your resources to Cloudflare's global network, enhancing security while simplifying the process. This solution is particularly useful for connecting various services, including web and SSH servers, to the internet without direct exposure. The author, Prateek Jain,

Published: 2025-07-13 | Origin: /r/programming

The content announces a limited-time 35% discount on a paid subscription for the 4th of July. It emphasizes the importance of the database layer in scalable system design, whether for monolithic backends or microservices, noting that database performance is crucial for application success. The article, presented by the Javarevisited Newsletter, aims to educate readers on foundational concepts such as Databases and Connection Pools, highlighting their role in managing requests effectively and maintaining optimal performance. It also mentions collaboration with software engineer

Published: 2025-07-13 | Origin: /r/programming

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Published: 2025-07-13 | Origin: /r/programming

The content discusses the critical importance of having a robust cyber attack response plan in place for organizations. It narrates the experience of a senior IT director whose organization faced a serious cyber attack, highlighting the transformation of her team from shock to a coordinated response over four days. The key takeaway is that organizations need to be prepared for breaches, as effective incident response can mean the difference between a manageable situation and a catastrophic one. Key points include: - The initial reaction during an attack is crucial, and organizations

Published: 2025-07-13 | Origin: Hacker News

The article by Dan Hollick discusses the evolution of digital displays in computing, highlighting their crucial yet often overlooked role. It traces the technology from early electron guns to modern tiny electric crystals, emphasizing the significant advancements and innovations over the years that have transformed how we interact with computers. The author reinforces the idea that while these displays may not always receive the recognition they deserve, they are central to the functionality and user experience in computing.

Published: 2025-07-13 | Origin: Hacker News

Django recently celebrated its 20th birthday, marking the first commit to its public repository on July 13, 2005. To commemorate this milestone, the Django community has launched a dedicated website that showcases various online and local events planned through 2025. Additionally, they aim to raise support for the project through donations, setting a goal of 200 new donors contributing $20 or more within 20 days, alongside at least 20 monthly donors. The overall fundraising target for 2025

Published: 2025-07-13 | Origin: /r/programming

Scalability is the capability of a system to handle increased demand—such as user traffic or data growth—while maintaining performance, reliability, and efficiency. A scalable system can adapt to changes without needing significant re-architecture or downtime, much like a well-planned city can accommodate population increases through expanded infrastructure. This content outlines various aspects of scalability, including: 1. **Definition and Importance**: Understanding scalability in modern system design. 2. **Core Techniques**: Key strategies for scalability, such