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ProgrammingDEV Community ·

ToolJet MCP Used to Build AI-Generated Supply Chain Control Tower App

A developer tutorial on DEV Community demonstrates how to build a supply chain control tower application using ToolJet's Model Context Protocol (MCP), designed for planning teams at a kitchen appliance manufacturer. The app consolidates exception tracking, supplier performance history, and inventory projections into a single three-page workflow. An AI agent generated the structured ToolJet application, keeping data queries and the user interface together in one environment. The first page provides a severity-ranked exception queue with escalation flows, the second ranks suppliers by declining performance over six months, and the third flags components at risk of stockout before the next inbound shipment. The article includes a full prompt that readers can use to reproduce the entire application in a single pass using a PostgreSQL datasource.

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ProgrammingDEV Community ·

Developer Rebuilds N-Back Trainer Tutorial Three Times, Struggles to Measure Clarity

A developer building a web-based N-Back working memory trainer has overhauled its tutorial three times after early users failed to understand the interface or complete sessions. The first version was a brief demo that left users confused about controls, while a second 'Academy' section with detailed theory caused drop-offs before users ever tried the exercise. The current version runs the tutorial directly on the game interface, guiding users through visual and audio signals in stages before ending with a five-signal independent test. Analytics from September 8–14 showed 57 users started the tutorial and 26 completed it, but the developer notes that finishing the test does not confirm whether users actually understood the mechanics. The core challenge remains: existing metrics track tutorial completion but cannot distinguish between users who grasped the concept and those who simply clicked through.

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ProgrammingDEV Community ·

Developer Launches Kamus Kode, a Code Snippet Sharing Platform for Indonesian Devs

An Indonesian developer has launched Kamus Kode, a web-based platform that allows developers to search, save, and share reusable code snippets. The platform supports multiple programming languages including PHP, JavaScript, Python, HTML/CSS, and SQL, and features a tag-based filtering system for easy discovery. Users can bookmark favourite snippets, rate contributions, and receive real-time notifications for replies and new content. Kamus Kode is built using the Laravel framework, Blade templates, Tailwind CSS, and a MySQL database. The project is still in active development, with planned improvements to search speed, language support, and user interface customisation.

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ProgrammingDEV Community ·

Study of 267 x402 Servers Finds 69% Fail to Process Payments Due to Header Flaws

A production audit of 267 live x402 payment servers, conducted by researcher touchstone for Zambo, found that 175 hosts — about 69% — were unresponsive to the X-PAYMENT header used by most clients. The root cause is a spec ambiguity that left two header names, X-PAYMENT and PAYMENT-SIGNATURE, for the same concept, causing server implementations to diverge silently. A separate sweep of 150 hosts confirmed 93 servers read only PAYMENT-SIGNATURE, meaning valid payments were ignored and servers returned a 402 error as if no payment had been made. The report also flagged that servers generating a fresh nonce in each 402 challenge produce non-deterministic responses, making compliance testing unreliable and indistinguishable from payment failure. Developers recommend a one-line fix to read both headers and advocate for deterministic, nonce-free challenge payloads to improve interoperability and testability.

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ProgrammingDEV Community ·

Developer Uses OmniRoute Gateway to Run Hermes Agent Across Multiple Free AI Providers

A developer has shared a method for running Hermes Agent, an open-source agent framework by Nous Research, through OmniRoute, a self-hosted AI gateway that routes requests across multiple model providers. The setup addresses a common problem with free AI models, where quota limits or sudden unavailability can interrupt multi-step agent workflows mid-task. Instead of connecting Hermes Agent directly to a single provider, OmniRoute sits between the agent and providers such as OpenRouter and NVIDIA, exposing a single unified endpoint. This architecture reduces tight coupling between the agent and any one provider, allowing automatic failover or switching without restarting workflows. The developer published a step-by-step tutorial and video walkthrough detailing the configuration and a live Hermes Agent task running through the setup.

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ProgrammingDEV Community ·

Developer shares lessons from building a path-based static hosting platform

A developer built a static hosting service called Plopino that serves user boards under URL paths rather than subdomains, avoiding wildcard certificates and per-board DNS setup. Key challenges included correctly handling relative URLs in user-uploaded HTML, where root-relative links could accidentally point to the host site's own file space. File uploads required careful encoding logic to support folder drags and international filenames, particularly for Chinese-locale machines using GB18030 encoding. Thumbnails and Office document previews were handled through persistent worker pools and a single headless Chromium instance to avoid performance bottlenecks. The platform also supports 20 languages including RTL scripts, with automated tests enforcing translation key order, placeholder consistency, and BCP-47 language tag validity.

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ProgrammingDEV Community ·

Amazon Bedrock Makes Generative AI Accessible Without Heavy Infrastructure

Amazon Bedrock is a fully managed AWS service that gives developers access to multiple foundation models from various AI providers through a single platform. Rather than building and training large AI models from scratch, developers can send prompts directly to a chosen foundation model and receive generated responses. The service supports use cases such as text generation, summarization, question answering, and content creation. Bedrock also offers customization options like fine-tuning and supports Retrieval-Augmented Generation (RAG) via Knowledge Bases, allowing applications to draw on external documents for more accurate responses. This makes generative AI experimentation practical for students, developers, and organizations without requiring significant computing infrastructure or machine learning expertise.

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ProgrammingDEV Community ·

Wasmer Invites Developer to Demo-Based Tech Interview After GitHub Review

A developer has been invited to a technical interview with Wasmer after applying to the company. Unlike typical tech interviews, the session will not involve pair programming or live coding challenges. Instead, the candidate has been asked to bring a demo project to discuss, suggesting the hiring team reviewed their GitHub profile. This demo-focused format indicates Wasmer evaluated the developer's existing work before extending the interview invitation.

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ProgrammingDEV Community ·

SC-900 Exam Guide: What to Know About Microsoft Purview and Compliance

Domain 4 of the SC-900 certification exam covers Microsoft Purview and compliance, accounting for 15–20% of the total score. The domain is organized around five stages: classifying data, applying sensitivity labels, enforcing data loss prevention, managing retention, and governing through tools like eDiscovery and Compliance Manager. Sensitivity labels travel with files and enforce protections such as encryption and access restrictions, while retention labels govern how long content is kept or deleted at the item level. DLP policies monitor for sensitive information types across platforms including Exchange, SharePoint, Teams, and endpoints, triggering actions that range from user notifications to outright blocking. Tools like Insider Risk Management, Communication Compliance, and Compliance Manager round out the domain, helping organizations detect internal threats and measure adherence to standards such as GDPR and ISO 27001.

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ProgrammingDEV Community ·

Apache Geode 2.0: Key Lessons from a Major Open Source Modernization

Apache Geode 2.0 has been successfully released after a large-scale modernization effort led by contributor Jinwoo Hwang and the broader Apache community. The project reinforced key engineering principles, including prioritizing foundational dependencies, modernizing tests early, and breaking large changes into incremental steps. Developers acknowledged that backward compatibility has limits, and that breaking changes require clear documentation and proactive community communication to manage effectively. The release is described as secure and positioned for long-term sustainability, with its future dependent on shared community contributions spanning code, testing, documentation, and mentorship. Those interested can get involved via geode.apache.org or the project's GitHub repository at github.com/apache/geode.

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ProgrammingDEV Community ·

How to cut Playwright CI runs under 5 minutes using caching and parallelism

A developer guide published on DEV Community outlines a two-file configuration to speed up Playwright test pipelines on GitHub Actions without sharding. The setup involves editing playwright.config.ts to enable full parallelism and set worker count to 50% of available CI resources, and updating the workflow YAML to cache Playwright browser binaries keyed to the package lockfile. On pull requests, only Chromium tests run for faster feedback, while the full browser suite — Chromium, Firefox, and WebKit — runs on merges to the main branch. A cache miss triggers a full browser and system dependency install, while a cache hit skips the download and only reinstalls OS-level libraries. The article claims these two configuration changes, achievable in an afternoon, can keep most test suites under five minutes on a single runner.

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ProgrammingHacker News ·

Israeli Minister Threatens Filmmakers' Citizenship Over Gaza Documentary

An Israeli minister has threatened to revoke the citizenship of filmmakers behind a documentary related to Gaza. The move signals government pressure on artists and journalists producing content critical of Israeli actions in the conflict. The threat has drawn attention amid ongoing debates over freedom of expression in Israel during the Gaza war. The incident was reported by Reuters and has sparked discussion in international media and online forums.

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ProgrammingDEV Community ·

TypeScript 6.0 adds strictBuiltinIteratorReturn flag to fix iterator type safety gap

TypeScript 6.0 introduces the --strictBuiltinIteratorReturn flag, which changes the BuiltinIteratorReturn type from 'any' to 'undefined' for built-in iterators like arrays, strings, and sets. This corrects a long-standing design gap dating back to TypeScript 2.3, where iterator protocol methods such as .return() and .throw() accepted arbitrary values without type validation. The update means code that passes typed values to these methods will now surface type errors, exposing previously silent bugs where those values were silently ignored at runtime. The flag is not included in the default --strict bundle in TypeScript 6.0, giving development teams time to audit and migrate their iterator-consuming code. Teams relying on legacy iterator libraries that expect the old 'any' behavior can still opt out while transitioning.

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ProgrammingHacker News ·

Officer Ran 19,000 Flock Camera Searches Across 1,558 Cities Without Cause

A police officer conducted approximately 19,000 searches across Flock Safety's network of license plate recognition cameras spanning 1,558 cities. The searches were found to lack any legitimate law enforcement justification, with the officer reportedly logging 'LMAO' as the stated reason for at least one query. Flock Safety operates a nationwide network of cameras used by law enforcement agencies to track vehicle movements. The incident has raised serious concerns about misuse of surveillance infrastructure and the absence of adequate oversight mechanisms. The case highlights broader questions around accountability and access controls for shared law enforcement data systems.

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ProgrammingDEV Community ·

Over-Reliance on AI Is Quietly Eroding Software Engineers' Coding Skills

A growing concern among software professionals is that habitual dependence on AI tools is leading to gradual cognitive atrophy, where engineers lose the ability to solve problems independently. Rather than thinking through challenges themselves, developers increasingly defer to AI for solutions, bypassing the critical reasoning process that builds genuine expertise. AI-generated code can appear clean and functional, yet often goes unreviewed, creating a workflow where neither junior nor senior engineers fully scrutinize what reaches production. Skill decay is not unique to software development — any ability left unpracticed will deteriorate over time. Experts suggest using AI as a complement for repetitive tasks while preserving independent thinking, rather than outsourcing the entire problem-solving process to it.

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ProgrammingHacker News ·

Insufficient source content to generate a reliable summary

The source text provided contains no article body — only a link, comment URL, and engagement metrics. Without the actual content, it is not possible to accurately summarize the topic of closing the IPv6 first-packet gap with Grand. Fabricating or inferring details from the headline alone would risk introducing inaccuracies. Please provide the full article text for a proper summary.

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ProgrammingDEV Community ·

12-Year-Old Runs Global Coding Jam From a Budget Android Phone Using Supabase

A 12-year-old developer with no laptop built and ran an international coding festival entirely from a POCO C55 Android smartphone. Using Supabase, he managed user authentication, PostgreSQL Row Level Security, and submission data for participants spanning China, India, and Japan. After starting with zero submissions, his event grew to attract a global community, with a 15-year-old from India ultimately winning the competition. A senior DevOps engineer later reviewed his architecture and flagged a telemetry gap, prompting him to add model-tracking columns to improve error logging. His experience highlights how accessible backend tools like Supabase are lowering barriers for young developers worldwide.

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ProgrammingDEV Community ·

BigQuery, Spark, and Trino Can Now Query the Same Iceberg Table on GCP

A technical demonstration on Google Cloud Platform shows how BigQuery, Apache Spark, and Trino can simultaneously read and write a single Apache Iceberg table without duplicating data. The setup uses Google Cloud's Lakehouse for Apache Iceberg service — formerly known as BigLake — which provides a native REST Catalog to coordinate table versions across query engines. Apache Iceberg acts as an open metadata layer over Parquet files stored in Google Cloud Storage, enabling ACID transactions, time travel, and schema evolution. The approach directly addresses a common enterprise problem where separate teams store redundant copies of the same data in different tools, leading to higher storage costs, inconsistent records, and fragmented access controls. The experiment was validated on real GCP infrastructure, including a captured HTTP 409 conflict error demonstrating Iceberg's optimistic concurrency control in action.

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ProgrammingDEV Community ·

How to Build Effective SaaS Demo Data Around a Single Complete Workflow

A practical guide for SaaS builders argues that demo environments should centre on one coherent, completable task rather than overwhelming visitors with crowded dashboards and unrelated sample data. The approach recommends writing the demo scenario in a single sentence, then building only the data records needed to support that specific task. Consistent data across all screens is essential, as conflicting statuses force visitors to solve a data puzzle instead of understanding the product. Developers are also advised to isolate demo actions from real operations, such as email sends or payments, and to clearly label the workspace as using sample data. Session resets should restore all relevant records so each new visitor begins with a clean, identical starting state.

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