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ProgrammingDEV Community ·

How to Auto-Renew Tailscale HTTPS Certificates on PiKVM Using systemd

PiKVM users running Tailscale for remote access must manually handle HTTPS certificate renewals, as certificates obtained via 'tailscale cert' are not automatically renewed. A community-developed solution uses a systemd timer that runs daily to check whether the current certificate matches the device's Tailscale FQDN and has at least 30 days of validity remaining. If renewal is needed, the script temporarily switches PiKVM's read-only filesystem to read-write, fetches a fresh certificate using the '--min-validity=720h' flag, and replaces the nginx SSL files before restoring the filesystem to read-only. The approach aligns with official PiKVM documentation, which recommends placing Tailscale certificates in '/etc/kvmd/nginx/ssl/' and restarting the kvmd-nginx service after updates. Since Let's Encrypt certificates are valid for 90 days, triggering renewal at the 30-day mark provides a comfortable buffer against expiration.

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ProgrammingDEV Community ·

Three key-free public APIs a developer uses daily in CI pipelines

A developer has shared a Node.js workflow that fetches trending content daily from three public APIs — Hacker News, DEV.to, and Reddit — without requiring any API keys or authentication. The script runs via GitHub Actions and feeds a content drafting pipeline, with keyless access reducing the risk of credential expiry or rotation failures in CI environments. The Hacker News Firebase API returns top story data with no rate limit documented, though parallel fetching and small delays help avoid occasional throttling. DEV.to's read-only articles endpoint allows unauthenticated access with a rate limit of 10 requests per second, while Reddit's lesser-known .json URL suffix enables listing data retrieval without OAuth, provided a valid User-Agent header is included. Each API has practical limitations around latency, uptime, or data freshness, but all three have proven reliable for once-daily automated runs over several months.

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ProgrammingDEV Community ·

DeepMind Reshuffles Leadership, Bans AI Code in OpenJDK, Launches Weather Model

Google announced that Demis Hassabis will move from CEO to Chair of Google DeepMind, with Jeff Dean also departing, signaling a potential shift toward product and commercialization. DeepMind also unveiled WeatherNext, a new AI weather forecasting model focused on improving cyclone trajectory prediction with implications for emergency response. Oracle banned AI-generated code contributions from being merged into OpenJDK, citing copyright uncertainty and taking a harder stance than most open-source projects. The policy forces contributors to verify code origin, a challenge for which no reliable method currently exists, with ripple effects expected across downstream open-source projects. A detailed analysis from patronview.com also highlighted that even well-configured bot-blocking tools struggle to reduce non-human web traffic below roughly 30% on large public sites.

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ProgrammingDEV Community ·

Dev Team Builds Research-Backed AI Email Tools Directory to Cut Through Vendor Hype

A development team has launched AI Email Assistants, a focused directory designed to help users meaningfully compare AI-powered email tools. Unlike typical software directories that rely on vendor-supplied descriptions, each listing is generated from a detailed research dossier covering capabilities, pricing, privacy terms, and platform support. The project deliberately narrowed its scope to email tools only, arguing that a tighter category allows for consistent, comparable data points that broad AI-assistant directories cannot provide. Researchers maintain two separate evidence tracks — one for first-party vendor claims and another for independent reviews — and explicitly flag when independent evidence is limited. The team also found notable discrepancies between vendor marketing pages and full policy documents, underscoring why they treat privacy and feature qualifiers as central to each profile.

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ProgrammingDEV Community ·

MoroJS Native HTTP Engine Benchmarks Faster Than uWS and Fastify on Node.js

A new native HTTP engine for Node.js, called @morojs/engine, has been developed to offer a faster built-in alternative to the standard node:http module by reducing C++-to-JavaScript boundary crossings to just 2–4 per request. Benchmarks run on a Node 24.11 environment on an Apple M2 Ultra machine showed the engine achieving around 105,000 non-pipelined requests per second, comparable to uWebSockets.js and Bun, while outperforming raw node:http and Hono. In pipelined tests, the engine reached approximately 663,000 requests per second, roughly 10% ahead of uWebSockets.js, thanks to response corking and batching entire pipelines into a single write operation. The engine uses raw V8 bindings instead of N-API for maximum performance and ships precompiled binaries to ensure day-one compatibility with new Node.js releases, with an automatic fallback to node:http if a binary is unavailable. It carries zero external dependencies and handles query, cookie, multipart, and route-pattern parsing internally, with all parsers subject to regular fuzz testing.

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ProgrammingDEV Community ·

Gyroscope tilt steering added to mobile chariot racing game via DeviceOrientation API

Developer pj90 has added gyroscope-based tilt steering to a mobile chariot racing game, allowing players to steer by physically tilting their device. The feature uses the DeviceOrientation API and includes an iOS 13+ permission flow that must be triggered within a user gesture. A new GyroscopeControls class reads the device's gamma axis and maps tilt angles beyond a configurable ±10° deadzone to left or right steering inputs. A HUD button, visible only on touch devices with orientation sensors, lets players enable the feature and recalibrate the neutral baseline at any time. The update also adds English and Hindi localisation strings for all gyroscope-related UI elements and alerts.

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ProgrammingDEV Community ·

How to Build Idempotent and Observable MuleSoft API Integrations for Production

MuleSoft integrations that work flawlessly in development can fail unpredictably in production due to dropped connections, slow responses, and client retries. Without idempotency controls, a simple retry can result in duplicate orders, invoices, or payments. The solution requires assigning stable, business-meaningful idempotency keys to operations so that repeated requests can be safely detected and ignored. Separately, correlation IDs should be used to trace execution flows, as the two concepts serve distinct purposes and should not be conflated. Designing both idempotency and observability into MuleSoft integrations from the start, rather than retrofitting them after incidents, is considered essential for enterprise-grade reliability.

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ProgrammingDEV Community ·

How Platform Engineering Streamlines Azure Kubernetes Service Deployments

Digital transformation is pushing companies to adopt platform engineering as a key strategy for managing cloud-native infrastructure, particularly within Azure Kubernetes Service (AKS) environments. Platform engineering involves designing and managing internal platforms that automate recurring tasks, freeing developers to focus on writing code rather than handling infrastructure concerns. In AKS deployments, platform teams standardize application lifecycles using Infrastructure as Code tools like Terraform, and enable developer self-service through CI/CD pipelines built on Azure DevOps or GitOps workflows. Monitoring tools such as Azure Monitor and Prometheus are used to track cluster health, manage security, and ensure compliance. Following best practices like consistent IaC adoption helps organizations maximize efficiency, reduce human error, and maintain scalability across containerized workloads.

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ProgrammingDEV Community ·

Developer Proposes AIC Standard to Give Packages a Coding-Agent Interface

A developer working across multiple tightly related SDK and application repositories identified a recurring problem: each package was independently defining how coding agents should interact with it, leading to inconsistent conventions and maintenance overhead. Over time, the repeated manual instructions for updating agent context files quietly became an undocumented protocol with no clear ownership or canonical source. To address this, the developer has drafted a convention called AIC (Agent Index Convention), which separates responsibilities among three actors: the package provider, the host repository, and the coding agent. AIC aims to give packages a stable, agent-facing interface — covering documentation, rules, skills, safe commands, and generated files — analogous to the programmatic interfaces packages already expose. The proposal is still in draft form based on the developer's own environment, but is being shared to establish a shared convention before independent solutions further fragment the ecosystem.

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ProgrammingDEV Community ·

Timestamp Errors in Stock Backtesting: Three Common Pitfalls for Quant Developers

Quantitative developers building US stock trading strategies often overlook timestamp handling, focusing instead on price and volume data integrity. However, non-standard timestamp processing can introduce three categories of errors across daily, minute-level, and tick-level market data. These bugs tend to be latent, rarely surfacing in early testing but causing significant system failures over time. A recommended best practice is to convert all incoming market data to UTC immediately upon receipt, store it in a unified format, and only convert to US Eastern time for display purposes. Hardcoding fixed timezone offsets is particularly risky, as the UTC-to-Eastern offset shifts with daylight saving time adjustments throughout the year.

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ProgrammingDEV Community ·

How Drizzle ORM Manages Database Schema Migrations With SQLite and Cloudflare D1

Drizzle ORM allows developers to manage database schema changes by editing TypeScript schema files and generating corresponding SQL migration files via the drizzle-kit CLI. Because Cloudflare D1 runs on SQLite, which has limited ALTER TABLE support, Drizzle handles complex changes by rebuilding tables — creating a temporary table, copying data, dropping the original, and renaming the new one. Common operations such as adding columns, renaming fields, dropping columns, and modifying indexes are all supported through this generate-and-apply workflow. Developers can also append custom SQL, such as data backfills or transformations, directly to the generated migration files before applying them. For production safety, the recommended approach follows an expand-backfill-switch-contract pattern to avoid breaking changes during deployment.

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ProgrammingDEV Community ·

Senior Java Developer Argues Lombok Saves Lines but Creates Hidden Long-Term Bugs

A developer with eleven years of enterprise Java experience contends that while Project Lombok reduces boilerplate code dramatically, it introduces hard-to-debug problems in real codebases. Annotations like @Data can cause serious issues with JPA entities, where auto-generated equals(), hashCode(), and toString() methods conflict with Hibernate's identity and lazy-loading mechanisms. A seemingly harmless log statement using a Lombok-generated toString() can trigger unintended database queries or even crash a logging pipeline through bidirectional association recursion. Attempts to fix these issues by layering additional Lombok annotations, such as @ToString(exclude) and @EqualsAndHashCode, ultimately defer complexity rather than eliminate it. The author's core argument is that hand-written methods remain visible, searchable, and fully owned in source code, whereas generated behavior is hidden and requires extra tooling knowledge from every future developer on the project.

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ProgrammingDEV Community ·

How to Build a React Client Intake Form with File Uploads Using Fillo SDK

Developers can build a client intake form using Vite and React that collects both structured answers and uploaded files in a single submission. The form captures details such as the client's name, work email, project outcome, an optional target date, and up to five reference files. Fillo's SDK handles schema definition, field validation, and file uploads directly from the browser to connected storage services like Google Drive, Amazon S3, or Box, without routing files through the app's own server. A preview mode is available for testing the form locally without an account, though file uploads remain disabled and responses are not recorded in that state. Developers are advised to connect their own storage and run through a checklist of edge cases before deploying the form for real client use.

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ProgrammingDEV Community ·

Nims University and World Health Summit Alliance Launch Climate & Wellbeing Hackathon

Nims University Rajasthan and the World Health Summit Academic Alliance, in partnership with Khushi Baby, have opened registrations for the Climate & Wellbeing Hackathon. The virtual competition invites participants to develop AI, remote sensing, and data-driven solutions addressing climate change and public health challenges. Problem tracks cover areas such as heat stress forecasting, urban rooftop vulnerability mapping, air pollution routing, and vector-borne disease prediction. Teams must submit their solutions as pitch decks, with a virtual jury review scheduled for August 20, 2026, and winners to be announced between August 23 and 24, 2026.

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ProgrammingDEV Community ·

How Thousands of Independent Nodes Keep Blockchain Networks Decentralized

Blockchain networks achieve decentralization by having thousands of independent computers, called nodes, each maintain a full copy of the ledger and verify every transaction themselves without relying on a central authority. Bitcoin currently operates with over 15,000 such nodes worldwide, each independently validating blocks against protocol rules. Different node types exist for different purposes, including full nodes for maximum security, lightweight nodes for mobile wallets, and archive nodes used by analytics platforms. Unlike traditional client-server systems, blockchains use peer-to-peer architecture where each node connects to 8–20 peers, spreading transaction data exponentially across the network within seconds. This design makes the network resistant to censorship, regional outages, and single points of failure, as even a fraction of active nodes can keep the system running.

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ProgrammingDEV Community ·

How to Use Claude Design 2.0 for High-Quality UI Without Generic AI Output

Claude Design 2.0, available through the Claude Desktop App and web interface on paid plans, allows users to build custom user interfaces guided by a structured creative process. The approach involves collecting visual references from real production websites before opening the tool, then using those references to generate a coherent design system within Design Labs. Users can refine the system's color palette, brand voice, and component details to ensure the output reflects a distinct visual identity rather than generic defaults. A structured prompt is then used to build page layouts — such as a hero section with animated graphics and feature cards — that draw directly from the established design system. Iterative feedback, including removing unwanted elements and feeding in custom graphics, helps polish the final result into a production-ready interface.

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ProgrammingDEV Community ·

Key CSS Techniques for Building Responsive, Maintainable Websites

Responsive web design requires layouts that adapt across mobile, tablet, and desktop screens, and a mobile-first approach — writing base styles for small screens before scaling up — is widely recommended. Developers use min-width media queries to progressively enhance layouts as screen size increases, while fluid typography tools like rem, vw, and the clamp() function help text scale naturally across viewports. Responsive images are handled using srcset and the picture element, enabling browsers to load appropriately sized assets per device. CSS architecture methodologies such as BEM, utility-first frameworks, and CSS Modules each offer distinct advantages in structuring class names, speeding up development, and scoping styles to components. Together, these techniques help ensure websites are not only visually adaptable but also accessible, performant, and easier to maintain over time.

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ProgrammingDEV Community ·

Developer Builds 8 Niche Game-Guide Sites to Answer Precise Player Search Queries

A developer has built eight small game-guide websites, each focused on answering specific search-intent queries for individual upcoming or recently launched games. The project covers titles ranging from extraction shooter Mistfall Hunter to cozy life sim Witchbrook, with each site designed around the distinct questions players actually search for. Rather than building broad wikis, the approach prioritizes one clear answer per page, a visible review date, and a transparent distinction between confirmed developer information and community inference. The developer avoids creating new URLs for keyword variants, instead updating or improving existing pages where possible. The experiment aims to make each site the most reliable next click for a player with an urgent, specific question.

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ProgrammingDEV Community ·

10 PHP Tricks Every Developer Should Know to Avoid Common Bugs

A technical guide published on DEV Community outlines ten PHP behaviors and coding tricks aimed at helping developers write cleaner, more predictable code. Key topics include the difference between loose (==) and strict (===) comparison operators, which can cause unexpected type-conversion bugs if misused. The article also covers PHP's null coalescing operator (??) for safely handling missing array keys, and explains how it differs from the ternary operator (?:) in practical use cases. Additional tips include using array destructuring to swap variables, applying array_map() for cleaner data transformation, and leveraging the match expression as a modern alternative to verbose switch statements. The guide is aimed at PHP developers at all levels looking to reduce subtle bugs and improve code readability.

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ProgrammingDEV Community ·

AI Bot Consolidates Four Hiring Files Into One Pre-Interview Briefing Packet

A developer has detailed a workflow automation bot designed to help hiring managers prepare for interviews by merging four key inputs — a calendar event, candidate CV, application form response, and role scorecard — into a single briefing document. The bot is deliberately restricted from scoring, ranking, or advancing candidates, addressing concerns around bias and employment law compliance. It runs on a scheduled trigger every ten minutes, scanning for upcoming interview calendar events and halting with an alert if any critical data field is missing. A consistent candidate identifier, specifically email address, is recommended as the foundation for reliable matching across inputs. The author argues that automating pre-interview information gathering, rather than resume screening, is the safer and more practical starting point for recruiting automation.

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