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ProgrammingDEV Community ·

Ahrefs API Costs Vary Up to 30x Depending on Columns Selected, Log of 1,100 Calls Reveals

A developer analyzed 1,102 Ahrefs API calls made during the final two days of a subscription, logging exact unit costs across 41 of the roughly 130 available endpoints. Ahrefs charges a minimum of 50 units per billable request, with row-priced endpoints adding costs based on the number of rows returned multiplied by selected columns. Certain premium columns — including volume, keyword difficulty, and traffic data — add approximately 10 units per row, meaning the same 120-row query can cost anywhere from 120 to 3,720 units depending solely on the fields requested. Three tools accounted for 78 percent of all units consumed, while free and flat-rate endpoints delivered around 100 times more rows per unit than the costliest ones. The analysis also found that during an API outage, the usage counter continued climbing even when no data was returned, with credits only restored hours later.

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ProgrammingDEV Community ·

Developer Passes Microsoft SC-900 Exam in Under a Month Using Conceptual Reasoning

A cybersecurity professional passed the Microsoft SC-900 Security, Compliance, and Identity Fundamentals exam on July 30, 2026, scoring 768 out of 1000 after less than a month of focused preparation. The candidate already held an ISC² Certified in Cybersecurity credential, which provided familiarity with core concepts like Zero Trust and least privilege, but found Microsoft's specific ecosystem and terminology to be the main challenge. A free exam voucher obtained through Microsoft's AI Skills Fest prompted an earlier-than-planned attempt, originally scheduled for late August. Rather than memorizing product names, the candidate focused on understanding which Microsoft security tool — such as Defender for Endpoint, Microsoft Sentinel, or Microsoft Purview — addresses which specific security problem. This reasoning-based approach, mapping products to their functions within Microsoft's ecosystem, proved more effective than rote memorization for passing the exam.

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ProgrammingDEV Community ·

Developer Builds Interactive CSS Landing Page Celebrating Jharkhand's Food Heritage

A developer has created 'The Jharkhand Kitchen,' a frontend landing page dedicated to the culinary traditions of Jharkhand, India. The page showcases two regional dishes — Dhuska and Litti Chokha — rendered entirely through pure CSS art using gradients, box-shadows, and keyframe animations, with no external images or SVGs. An interactive voting feature allows users to pick their favourite dish, with results saved via LocalStorage and celebrated with coordinate-based confetti animations built in vanilla JavaScript. The project also incorporates a 3D parallax tilt effect driven by mouse movement calculations. Accessibility features including semantic HTML, focus rings, and ARIA live regions were integrated to support screen reader users.

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ProgrammingHacker News ·

Developer shares personal workflow for using LLMs to master complex subjects

A developer named Laurentiu Gabriel has published a blog post detailing how he personally uses large language models (LLMs) as a learning tool for complex topics. The post, shared on Hacker News, outlines his practical workflow for leveraging AI assistants to accelerate understanding of difficult subjects. The article attracted modest engagement on the platform, garnering 13 points and 8 comments. The approach reflects a growing trend of individuals using conversational AI tools as personalized tutors or study aids.

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ProgrammingDEV Community ·

Voice AI Weekly: Watermarking Rules, Emotion Prompts, and Open-Source Agent Tools

A developer blog on DEV Community recapped six posts covering major voice AI developments from the past week. The EU AI Act's synthetic audio watermarking rules took effect on August 2, requiring TTS API providers to implement marking pipelines for generated audio. Kakao released Kanana-o, a text-to-speech model scoring 94.50 on the Korean InstructTTSEval that handles emotion through natural language instructions rather than SSML tags. Nous Research shipped Hermes Agent v0.20.0, an open-source voice agent framework with streaming TTS, barge-in support, and pluggable backends, positioning it as a competitor to proprietary options. The roundup also highlighted a one-year leap in AI coding benchmarks, with top models jumping from 49% to 95% on SWE-bench, and a demonstration of Claude Fable 5 generating a fully playable 3D browser game from a single prompt.

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ProgrammingDEV Community ·

How Small Startups Can Honestly Answer Enterprise Security Questionnaires Without SOC 2

Early-stage startups closing enterprise deals often face lengthy vendor security questionnaires demanding a SOC 2 report, which can cost $10,000–$30,000 and around 200 hours to obtain. A guide published on DEV Community advises small teams to answer such questionnaires truthfully rather than overstating their security posture, since experienced reviewers can easily detect inflated claims. The recommended approach structures each honest negative answer in three parts: a clear 'no', context explaining why the risk is limited given the company's size or architecture, and a specific compensating control that addresses the underlying concern. For example, a solo developer without peer code review can instead cite an automated test suite, traceable deploys, and active vulnerability alerts as risk-reducing measures. The core argument is that security reviewers are trained to accept compensating controls, and a credible, specific alternative often moves a deal forward more effectively than a vague or misleading 'yes'.

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ProgrammingDEV Community ·

Restate vs Temporal: Why Your Ops Setup Matters More Than Your Code

Restate and Temporal are both durable execution engines that journal each completed step and replay it after a crash, preventing issues like double charges or lost reservations. The key difference lies not in how they handle durability, but in what you must operate: Restate runs as a single binary, while Temporal requires a cluster of four independently scalable services backed by an external database. Temporal's stack includes Frontend, History, Matching, and internal Worker services, with PostgreSQL or MySQL for persistence and optionally Elasticsearch for advanced workflow search. A common misconception is that Temporal always requires Elasticsearch — SQL databases have supported advanced visibility since server v1.20, making it optional until query volumes grow. The article argues that teams should choose between the two based on their operational capacity rather than code preferences, since the application logic written for each platform is more similar than vendors typically acknowledge.

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ProgrammingDEV Community ·

How Frontend Engineers Should Resize Images for Hostile Email Client Environments

A frontend engineer has shared a practical guide for optimizing images in email campaigns, drawn from experience managing a transactional email pipeline that was sending 1.4 MB JPEGs to a mobile-heavy user base. Email clients like Outlook, Gmail, and Apple Mail each handle images differently, with issues ranging from re-compression and DOM rewriting to aggressive caching and dark mode inversions. The guide recommends sizing images into three logical width buckets — full-bleed, two-column, and inline — based on the email's 600px content column and the target device pixel ratio. Engineers are advised to analyze their newsletter's actual client and viewport distribution before deciding whether to ship 2x or 3x image variants. The core principle is to resize once in code, use HTTPS URLs, keep query strings short, and design CSS fallbacks for when images fail to load.

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ProgrammingHacker News ·

Open-Source Tool Lets Developers Time-Travel Through SQLite Database States

A new open-source project called time-travel-sqlite-debugger has been published on GitHub by developer nsrht. The tool allows developers to navigate through historical states of a SQLite database, functioning like a time machine for debugging purposes. It is designed to be ultra-lightweight with zero external dependencies, making it easy to integrate into existing projects. The project gained early attention on Hacker News, accumulating 8 points and an initial comment. No further details about release date or supported platforms were provided in the listing.

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ProgrammingDEV Community ·

Developer Discovers Clearer Python and Big O Notation Explanations on DEV Community

A new user recently joined DEV Community after stumbling upon an explanation of Big O notation while learning Python. They found the content on the platform to be clearer and more accessible than explanations provided by an AI-based teacher on another learning site. The discovery prompted them to create an account and engage with the community. The post highlights how peer-written content can sometimes outperform automated teaching tools in clarity and approachability.

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ProgrammingDEV Community ·

Redis Rate Limiting Solves API Spam and Scaling Gaps in Express Apps

A backend developer identified a critical vulnerability in their Express API where unrestricted endpoint access could crash servers or inflate costs from external AI service calls. In-memory request tracking was initially considered but rejected due to memory leak risks and failure to work across multiple server instances behind a load balancer. The developer implemented Redis as a centralized rate-limiting store, ensuring consistent request counts are shared across all app instances. A global limit of 100 requests per 15 minutes was applied to standard routes, while sensitive endpoints like AI generation were restricted to 5 requests per 10 minutes. The setup uses the express-rate-limit and rate-limit-redis packages with ES Modules, and Redis was noted to process limit checks in under one millisecond.

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ProgrammingHacker News ·

Opinion: Reframing Goals Around Experience Can Redefine Success

A blog post published on Starting From Nix argues that shifting one's focus from outcomes to experiences can change how success is measured. The author suggests that when experience itself becomes the primary goal, failure in conventional terms becomes impossible. The piece encourages readers to reconsider how they define winning in personal and professional pursuits. The article has gained early traction on Hacker News, though discussion remains limited at this stage.

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ProgrammingHacker News ·

Blogger Claims Tinnitus Vanished After Changing His Relationship With It

A personal account published on mynoise.net describes one individual's experience managing and ultimately overcoming tinnitus. The author details a psychological approach of accepting rather than fighting the condition, framing it as a turning point in their recovery. The post, shared on Hacker News, attracted modest engagement with 13 points and 3 comments. Tinnitus, a condition causing persistent ringing or noise in the ears, affects millions worldwide and has no universally accepted cure. The account suggests that a shift in mindset toward the condition may have contributed to its disappearance, though no clinical evidence is cited.

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ProgrammingDEV Community ·

How AfriWidget Is Building Lightweight Web Tools for Emerging Market Users

AfriWidget is a web platform offering calculators for health, finance, and education, designed specifically for users in Africa and other emerging markets. The platform runs most calculations locally in the browser using vanilla JavaScript, eliminating server round-trips to reduce data costs and enable offline use. It uses internationally validated formulas — such as WHO guidelines for BMI — to ensure reliability for users who may have limited access to professional healthcare or financial advice. The tools are built with static HTML and minimal JavaScript to function effectively on slow networks and older devices. The project highlights a broader design philosophy: deliberately building for the majority of the world that still lacks fast internet and modern hardware, rather than defaulting to assumptions suited for high-income markets.

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ProgrammingDEV Community ·

AWS Bedrock Adds Temporal Policies as AI Agent Control Moves Beyond the Model

AWS this week expanded Amazon Bedrock AgentCore with temporal policies and an open-source policy language called Dogwood, enabling AI agent gateways to evaluate sequences of actions rather than individual tool calls in isolation. The update addresses scenarios where each single action appears compliant but the cumulative pattern violates organizational intent, such as an agent making multiple near-limit purchases. The architectural shift places runtime control outside the model itself, meaning agents no longer rely on faithfully recalling constraints from their prompts. A parallel trend is emerging across the ecosystem, with platforms like Tenable's CyberAgents Exchange decomposing agents into discrete, reusable components including skills, plans, and policies. However, analysts note that runtime policy enforcement still leaves open a deeper question: determining whether the underlying organizational judgment or evidence actually warrants an approval, a problem distinct from simple tool authorization.

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ProgrammingDEV Community ·

How I Protected My Express API from Spam and High AI Costs Using Redis

When I was building my backend API, I realized a big problem: anyone could spam my endpoints. If a user repeatedly reloads a page or hits an endpoint calling an external AI service, it can crash the server or run up high API costs. To fix this, I added Rate Limiting. Here is why I used Redis for it and how I set it up. At first, I thought about saving request counts in a simple JavaScript object: // ❌ Simple in-memory check (Not good for production) const requestCounts = {}; app.use((req, res, next) => { const ip = req.ip; requestCounts[ip] = (requestCounts[ip] || 0) + 1; if (requestCounts[ip]

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ProgrammingDEV Community ·

Developer builds zero-dependency Go clipboard tool for terminal-based text sharing

A developer has released cpynet, a single-file Go binary designed to simplify text sharing between remote servers and local machines entirely from the terminal. The tool requires no signup, no database, and no external dependencies, operating purely through curl commands over standard HTTP. Snippets are stored in memory only and auto-delete either after the first read or when a configurable TTL expires. For sensitive data, the tool supports AES-256-GCM client-side encryption, ensuring the server never processes plaintext. The project was motivated by the friction developers face when using traditional pastebins or clipboard utilities in headless or restricted server environments.

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ProgrammingDEV Community ·

How to Build a Secure AI Proxy with Cloudflare Workers to Hide API Keys

Exposing AI API keys directly in browser-side code is a widespread and dangerous mistake that can lead to stolen credits, large bills, and account suspension. The Backend-for-Frontend (BFF) proxy pattern solves this by routing requests through a secure middleware layer instead of calling AI providers directly from the client. This guide demonstrates how to build a lightweight, serverless proxy using Cloudflare Workers that securely stores API keys as environment variables and forwards sanitized requests to Groq or OpenAI. The implementation covers scaffolding the Worker with the create-cloudflare CLI, managing secrets via Wrangler, and writing TypeScript logic to validate input, handle CORS, and return AI responses. The approach avoids the overhead of a traditional Express server while keeping sensitive credentials entirely off the client side.

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