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ProgrammingDEV Community ·

Four Ways ABAC Authorization Fails in Production and How to Fix Them

A software engineer running an ABAC authorization system for a healthcare platform serving over 25 million users across 1,000+ sites has outlined the real-world failure modes that emerge after deployment. Unlike common comparisons that stop at model selection, the article focuses on what actually breaks in production: stale attributes, policy rule explosion, missing enforcement points, and silent access decisions. Stale attributes are particularly dangerous because a correctly written policy evaluated on outdated data returns wrong decisions without any obvious error. The engineer recommends assigning a source of truth and maximum accepted age to every attribute, enforcing a fail-closed posture, requiring named owners and regression tests for all policies, and routing every code path through a single authorization gate. Comprehensive logging of every access decision is also stressed as non-negotiable, especially in regulated environments where audit trails are a compliance requirement.

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ProgrammingDEV Community ·

Vercel Integrates with OpenAI Agents API for Serverless AI App Deployment

Vercel announced on September 10, 2026, an integration designed to simplify building and deploying applications using the OpenAI Agents API. Under this architecture, OpenAI handles the agent loop and session state, while Vercel connects each session to isolated sandbox environments for code execution. The setup follows a scale-to-zero model, meaning no always-on workers or containers are required, making it cost-efficient for bursty or asynchronous workloads. The OpenAI Agents API is currently in public beta, so developers should expect ongoing changes to its capabilities and interfaces. This shift signals a broader trend in AI engineering, where production systems are built around managing autonomous agent runtimes rather than simply calling language model endpoints.

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ProgrammingDEV Community ·

Mercado Libre Blocks Public Search API; Memory Boost Lifts Scraper Success Rate to 90%

Mercado Libre has permanently shut down anonymous access to its public search API, returning a 403 Forbidden error consistently across all proxy types, including datacenter and residential connections. The HTML search page remains accessible but serves a proof-of-work challenge only to residential IPs, while other connections receive a deceptive 200 response containing a decoy asset bundle with no real results. Scraping attempts were failing not due to bot detection but because containers ran out of RAM mid-challenge, as Mercado Libre's search page renders a 3.3 MB DOM. Doubling Actor memory from 4 GB to 8 GB raised the challenge-clearance rate from 50% to 90%, with failures at lower memory caused by out-of-memory kills rather than blocks. The updated scraper now runs at 8,192 MB, clears the challenge once per session, and retrieves up to nine pages of results at a cost of $5.20 per 1,000 results.

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ProgrammingHacker News ·

Grim Fandango's 1996 Internal Puzzle Design Document Surfaces Online

A puzzle design document created internally for the 1996 LucasArts adventure game Grim Fandango has been made available online as a PDF. The document offers a behind-the-scenes look at how the game's puzzles were planned and structured during development. It was shared via a game-focused archival site, drawing attention from gaming history enthusiasts on Hacker News. Such design artifacts are considered rare primary sources for understanding classic game development processes.

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ProgrammingHacker News ·

Far-Left Party Wins Berlin Election on Housing Nationalisation Platform

A far-left party has won a Berlin election, according to a Reuters report dated September 20, 2026. The party ran on a pledge to nationalise housing in the German capital. Berlin has faced prolonged housing affordability pressures, making it a politically charged issue. Further details about the winning party, vote share, and coalition prospects were not available in the provided source text.

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ProgrammingDEV Community ·

How Microsoft Foundry's Code Interpreter Actually Runs Python Inside a Sandbox

Microsoft Foundry's Agent Service includes a Code Interpreter tool that spins up an isolated Python container to perform deterministic computations, rather than relying on a language model to reason through calculations. The system addresses a core weakness of large language models, which are prone to errors in arithmetic, string manipulation, and large dataset operations. When an agent invokes the tool, Foundry lazily provisions a sandboxed container, stages files through Azure Storage, executes the code, and returns verified output with no network access to external infrastructure. Three key components govern the system: the tool definition, the container environment, and the session, which is a billable, time-limited runtime unit. Understanding the distinction between auto-managed and explicitly managed containers, as well as the difference between prompt agents and hosted agents, is critical for developers deploying the feature at production scale.

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ProgrammingDEV Community ·

Atlassian Forge JSM Portal Panel Silent Submit Bug Traced to Wrong Payload Shape

Developers using Atlassian's Forge platform encountered a silent failure when submitting data via the jiraServiceManagement:portalRequestCreatePropertyPanel module, where issue properties returned as undefined without any error or warning. The root cause was an incorrectly shaped payload passed to the view.submit() call, which the @forge/bridge package's loosely typed submit signature — accepting any object — failed to catch at compile time. Atlassian's own manifest-reference page documents the required shape: an object with a fields array of key-value objects and a required isValid boolean. Developers are advised to consult this documentation before writing their submit handler, as the package types alone will not flag a malformed payload. A separate, still-unresolved challenge involves populating a real Jira custom field from the stored property value after submission.

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ProgrammingDEV Community ·

OKX Governance Layer Rated 7/10 Risk in DeFi Security Audit

A DeFi security research team has published a governance attack surface review of OKX, which manages approximately $31.2 billion in total value locked across Ethereum and Layer 2 networks. The audit identified nine distinct attack vectors spanning the protocol's on-chain proposal, voting, and execution pipeline, as well as its off-chain processes including multi-sig coordination and oracle feeds. Among the most critical findings are flash-loan-driven voting exploits, where borrowed OKB tokens could be used to pass malicious proposals within a single transaction. Analysts also flagged that the top 10 OKB holders control roughly 30% of supply, enabling potential whale collusion, while timelock windows as short as zero to 30 minutes leave insufficient time for community or auditor intervention. The report assigns an overall risk score of 7 out of 10 and calls for stronger timelock safeguards, improved multi-sig key management, and measures to reduce voting power concentration.

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ProgrammingDEV Community ·

OpenZFS bug causes mass segfaults and silent outages; fixed in versions 2.4.4 and 2.3.9

A kernel-level arithmetic flaw in OpenZFS versions before 2.4.4 and 2.3.9 caused widespread, seemingly random process crashes on affected hosts. The bug in zfs_fillpage() triggered an unsigned integer underflow when a file was truncated while an mmap page fault was in progress, causing the kernel to zero-fill large swaths of physical memory belonging to unrelated processes. The resulting crash of systemd's PID 1, combined with its default CrashAction=freeze setting, left affected machines completely unresponsive for hours while still technically running. From the outside, the server appeared powered off — no SSH, no HTTP responses — though journal logs confirmed it had been silently failing the entire time. OpenZFS released fixes on 21 August 2026 in versions 2.4.4 and 2.3.9, and administrators can limit outage duration by setting CrashAction=reboot in a systemd drop-in file.

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ProgrammingDEV Community ·

WebAssembly 3.0 and Rust 1.98 Push Browser Compute Close to Native Speed

WebAssembly 3.0 was officially released on September 17, 2025, introducing native garbage collection, 64-bit memory addressing up to 16GB, and improved exception handling. These advances have transformed modern browsers from document renderers into capable local compute environments able to handle tasks like video editing, ML inference, and geospatial processing. Rust 1.98.1 has emerged as the leading language for compiling to WebAssembly, enabling developers to achieve execution speeds reportedly reaching 95% of native performance. JavaScript's architectural limitations — including GC-induced latency, dynamic typing overhead, and poor SIMD support — make it ill-suited for such heavy workloads. Together, WebAssembly 3.0 and Rust offer a path to reducing reliance on costly cloud backends while improving user privacy and real-time responsiveness.

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ProgrammingDEV Community ·

Dev Builds Laravel Marketplace with PostgreSQL, Tackles React State Bugs Along the Way

A developer documented their hands-on experience building a Laravel-based marketplace application backed by PostgreSQL, covering routes, controllers, Blade templating, and form validation. The project's database schema was designed around four user roles and two core business rules: sellers cannot purchase their own products, and new listings require Admin or Moderator approval before going live. Debugging a missing PHP intl extension and working through Laravel migration concepts — including cascading deletes versus nullable foreign keys — proved as instructive as writing the code itself. On the React side, the developer worked with useState and useEffect to fetch data from the TVMaze API, learning that fetch does not reject on HTTP errors and must be handled explicitly with response.ok checks. A stale closure bug, where state logged as the old value immediately after a setter call, offered a practical lesson in how React's re-render cycle and closures actually behave.

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ProgrammingDEV Community ·

Aphelion Editor: Open-Source Node-Based Video Editor Built for Flexible Pipelines

A developer has released Aphelion Editor, a free and open-source video editing application that replaces the traditional timeline workflow with a node-based graph system. Users connect nodes representing inputs, effects, transforms, audio, and outputs to visually construct their entire video processing pipeline. The project is written in Python using PyQt6, with OpenCV, NumPy, and FFmpeg handling media processing tasks. Current features include keyframing, point and planar tracking, animatable properties, plugin support, and a growing built-in node library. The source code is publicly available on GitHub, and the developer plans to add GPU-backed processing and expand compositing and motion graphics capabilities over time.

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ProgrammingDEV Community ·

How to Manage React Native Dev, Staging, and Prod Builds Using Flavors and Schemes

Managing multiple environments in React Native apps becomes complex as projects grow, requiring separate API endpoints, Firebase configs, app IDs, and native settings for each build type. A developer documented their solution using react-native-config alongside Android Product Flavors and iOS Schemes to automate environment selection. The approach relies on separate .env.dev and .env.prod files whose values are baked into the app at build time, eliminating manual file edits before each build. Simple npm scripts such as 'npm run android:dev' or 'npm run ios:prod' handle the correct environment automatically. The setup ensures that JavaScript, Android native code, and iOS native code all draw from a single environment configuration source without touching application code between builds.

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ProgrammingDEV Community ·

npm publish silently ignores .gitignore when a .npmignore file is present

When an npm package is audited using 'npm pack --dry-run', developers may discover that sensitive files excluded in .gitignore are actually being published to the registry. This happens because npm follows a strict priority order — the 'files' array in package.json, then .npmignore, then .gitignore — stopping at the first match it finds. Adding even a minimal .npmignore file completely overrides all .gitignore rules, without any warning from npm. npm's built-in always-excluded list is narrow and does not cover common sensitive files such as .env files, private keys, or internal notes. Experts recommend using the 'files' whitelist in package.json instead of .npmignore, and verifying tarball contents in CI to prevent accidental data exposure.

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ProgrammingDEV Community ·

One structural rule that stops AI from shipping confidently broken code

A developer spent 30 days allowing AI to write 100% of application code in a production environment to identify what genuinely prevents faulty AI-generated code from shipping. He found that asking AI to review its own output is counterproductive, as the model simply reaffirms its original work rather than challenging it. The key rule he identified is that nothing should merge until a separate reviewer — whose sole task is to find failures, not confirm correctness — has attempted and failed to break the code. For maximum effectiveness, the reviewer should be a different AI model family than the one that wrote the code, since models from the same family share similar blind spots. The reviewer must also be given an adversarial prompt that assumes the code is broken and demands specific failure scenarios, rather than a general request for a code review.

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ProgrammingDEV Community ·

Python Operators and Conditionals: A Practical Guide for Beginners

A tutorial published on DEV Community introduces Python comparison operators and conditional statements, covering how they evaluate relationships between values as true or false. The guide explains the use of if, elif, and else blocks to control program flow based on single or multiple conditions. Logical operators such as and and or are demonstrated to combine conditions, while nested if statements handle multi-step decision-making. Real-world examples including loan qualification, banking transaction limits, and matatu ticket pricing are used to illustrate each concept. The tutorial concludes by emphasizing that condition order matters and that the most specific checks should always be placed first.

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ProgrammingDEV Community ·

Rowhammer: How Repeated RAM Access Can Flip Bits Without Any Permission Breach

Rowhammer is a hardware-level attack that exploits a physical vulnerability in DRAM memory chips to corrupt data without ever violating software permissions. Each bit in DRAM is stored in a capacitor-transistor cell arranged in dense rows, and accessing a row generates electrical disturbances that can affect neighboring rows. When an attacker repeatedly activates the same memory row hundreds of thousands of times per second, the cumulative interference can cause a bit in an adjacent protected row to flip its value. This occurs because the standard DRAM refresh mechanism is not designed to compensate for such abnormally high activation rates. A more aggressive variant called double-sided hammering targets rows on both sides of the victim row, increasing the likelihood of inducing a bit flip.

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ProgrammingDEV Community ·

Wrist Pain in Developers Is a Lagging Indicator, Not a Real-Time Signal

Repetitive strain pain in developers often appears hours or days after the actual overuse occurs, making it difficult to identify the true cause. This delay leads many to wrongly credit equipment changes — like new keyboards — for recoveries that were simply the result of reduced workload after a sprint ended. Research into personal pain history typically reveals that discomfort peaks one to two days after the heaviest typing sessions, not on the day itself. Experts suggest tracking keyboard hours and morning pain scores over several weeks to reveal the lagged correlation between cumulative input volume and symptoms. The most effective prevention is proactively scheduling lighter workweeks after known high-intensity periods, rather than waiting for pain to appear before making changes.

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ProgrammingDEV Community ·

Indonesian Self-Taught Frontend Developer Builds Web Portfolio via Hands-On Projects

Muhammad Idzhar Al-Asyari, an Indonesian web developer known online as @zhar_website, graduated from SMK Tunas Pemuda with a specialization in Software Engineering. He has been teaching himself web development using HTML, CSS, and JavaScript, building projects from the ground up to sharpen his skills. One of his ongoing projects, ZharWeb, combines a website catalog with his personal developer profile. He uses GitHub to store, manage, and publish his work, treating each project as a learning opportunity. Idzhar aims to continue growing his frontend development skills and create more practical, real-world web applications.

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ProgrammingDEV Community ·

Dev fixes script that wasted 3 API calls per run by misreading quota errors as bad output

A developer discovered that their automated article-generation script was misidentifying Claude's quota-limit messages as low-quality article output for four consecutive days between September 13 and 16. Because the quality checker only measured character count, it repeatedly concluded the short limit message was simply an article that needed rewriting, triggering two additional wasted API calls per run. The root cause was the script's failure to distinguish between a fixable failure and an unfixable one — a quota limit cannot be resolved by retrying until the reset window passes. The fix involved adding a grep check immediately after each generation pass to detect known quota-limit message patterns and abort on the first match. With the patch in place, the script now consumes exactly one API call before exiting cleanly, and the same fix is being applied to three other scripts sharing the same retry structure.

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