SShortSingh.

Programming

0
ProgrammingDEV Community ·

Why the Standard Hourly Rate Formula Leaves Freelancers Severely Underpaid

Many freelancers calculate their hourly rate by dividing their target income by 2,000 hours, assuming full billable time with no expenses — an approach that significantly underestimates real costs. In practice, administrative tasks such as proposals, invoicing, emails, and marketing consume roughly 13 hours per week, reducing actual billable hours to around 1,350 annually. On top of lost billable time, freelancers must also account for business overhead, self-employment taxes of 25–30%, and unpaid time off, none of which traditional employment-based formulas factor in. A concrete example shows that a freelancer targeting $60,000 net income but charging only $30 per hour could realistically take home as little as $21,160 after taxes and expenses. Experts suggest using a more comprehensive formula that incorporates overhead, tax reserves, realistic billable ratios, and planned time off to arrive at a true minimum viable rate.

0
ProgrammingDEV Community ·

Hidden hreflang-switcher mismatch left 1,474 dead links undetected across 737 pages

A web developer discovered 1,474 broken internal links spread across 737 pages of their own site, all caused by a mismatch between hreflang tags and the site's language switcher navigation. The hreflang tags correctly marked certain pages as English-only, but the language switcher unconditionally displayed Chinese language buttons on every page, pointing users to URLs that returned 404 errors. The bug evaded all standard automated checks because the pages themselves returned HTTP 200 responses and the hreflang configuration was technically valid. The root cause was two independent systems answering the same question — whether a page exists in Chinese — with conflicting answers. The fix involved making the language switcher consult the same English-only page list already used by the hreflang generator, eliminating all dead links in a single change.

0
ProgrammingDEV Community ·

Cloud Computing Basics: AWS, IaaS, PaaS and SaaS Simply Explained

Cloud computing allows users to access servers, storage, databases, and networking over the internet instead of managing physical infrastructure themselves. Traditionally, businesses had to buy, house, and maintain their own servers, bearing full responsibility for costs and hardware failures. Cloud providers changed this model by letting users rent computing resources on demand and pay only for what they consume, similar to how electricity is billed. The infrastructure has evolved over time from dedicated physical servers to virtual machines, containers, and serverless computing, each offering greater efficiency. Major cloud platforms like AWS offer services across three main categories — IaaS, PaaS, and SaaS — catering to different levels of user control and management.

0
ProgrammingDEV Community ·

DeepSeek Releases Harness Agent Framework in Developer Preview Under MIT License

DeepSeek launched Harness in developer preview, publishing it on GitHub under an MIT license with a plugin-based architecture built on the Cordis kernel. Every agent component — including models, tools, sandboxes, and scheduling — is a plugin, allowing developers to swap out individual parts via configuration files without modifying core code. The framework offers four runtime modes: Standard, Code, Minimal, and Creator, each suited to different use cases ranging from full-featured agent workflows to controlled benchmarking. Every session generates an append-only log capturing system prompts, tool calls, reasoning traces, and subagent activity, enabling detailed trajectory inspection and reproducible evaluation. Developers can run the framework locally using npx @deepseek-ai/dsh web, with the source available at github.com/deepseek-ai/deepseek-harness.

0
ProgrammingHacker News ·

Gödel's Incompleteness Proof Explained: The Logic That Shook Mathematics

Kurt Gödel's incompleteness theorems, first published in 1931, fundamentally changed the foundations of mathematics. Gödel demonstrated that within any consistent formal mathematical system, there exist true statements that cannot be proven within that system. His method involved encoding mathematical statements as numbers, allowing mathematics to essentially refer to itself. This self-referential technique, known as Gödel numbering, was the key innovation that made the proof possible. Quanta Magazine's explainer revisits the landmark proof, breaking down its mechanics for a general audience.

0
ProgrammingDEV Community ·

Renamed Collection URL and Lazy-Load Bug Wiped a Store's Top Product from Search

A handmade lighting store's best-selling product vanished from search results shortly after a new theme launch, prompting an urgent investigation. The root cause turned out to be two separate issues: a collection renamed in the dashboard had silently changed its public URL, breaking over a year's worth of inbound links and passing search authority into a 404 dead end. A permanent 301 redirect was added to restore the old path and recover the lost link equity. A second problem was found in the product grid's 'Load More' button, which loaded additional items via JavaScript without providing crawlable HTML links, leaving the best-seller invisible to search crawlers. The fix preserved the interactive UI while adding a real anchor tag so both crawlers and users could reliably reach the full catalog.

0
ProgrammingDEV Community ·

Sarj.ai CTO Builds Open-Source Linter to Keep AI-Generated Code in Check

As AI tools like Codex increasingly write code at speed, thorough human code review has become impractical at scale. To address this, the CTO of Sarj.ai developed an open-source linting tool called Standards, which encodes over three years of code review experience into more than 100 deterministic rules. The linter runs automatically during the pre-commit process, flagging violations in AI-generated code and prompting the AI agent to fix them without developer intervention. Rules range from simple conventions — such as enforcing uuidv7 over uuidv4 — to nuanced structural guidelines like the stepdown rule for code readability. Released under the MIT license, the tool aims to preserve the speed advantages of AI-assisted development while maintaining code quality and correctness.

0
ProgrammingDEV Community ·

SaaS vs. Custom Software: A Practical Cost Checklist for Growing Teams

A decision framework shared by eDeskCloud outlines when growing businesses should stick with SaaS tools versus investing in custom-built software. Key warning signs for outgrowing SaaS include paying for largely unused seats, relying on spreadsheets to bridge multiple tools, and being forced to change internal processes to fit vendor workflows. A five-year cost comparison shows that for 25 users, a $30,000 custom build can undercut SaaS spending by roughly $11,000, with break-even typically arriving around year three. The guide recommends keeping commodity functions like payroll and compliance on established SaaS platforms while building only the workflows that represent a genuine competitive differentiator. Teams are advised to budget 15–20 percent of build cost annually for maintenance and to secure full ownership of code, data, and infrastructure before any development begins.

0
ProgrammingHacker News ·

Airbnb Shares Lessons on Evaluating Generative AI Systems at Scale

Airbnb's engineering team has published insights on their approach to evaluating generative AI at scale, a methodology they call eval-driven development. The framework emphasizes structured evaluation as a core part of the AI development lifecycle rather than an afterthought. The post details practical lessons learned from deploying and assessing GenAI systems across Airbnb's platform. The article, shared on Airbnb's engineering blog, aims to help other teams build more reliable and accountable AI-powered products.

0
ProgrammingHacker News ·

OpenAI Report Reveals How Organizations Are Deploying ChatGPT

OpenAI has published a research report examining how organizations are using ChatGPT in real-world settings. The document provides evidence-based insights into enterprise and institutional adoption patterns of the AI chatbot. The report is available as a publicly accessible PDF via OpenAI's content delivery network. It aims to shed light on the practical applications and use cases that businesses and organizations have found for the technology.

0
ProgrammingDEV Community ·

Why File Encryption and App Lock Screens Are Not the Same Thing

A passcode or biometric prompt controls access to an app but does not guarantee that stored files are encrypted, making the two features fundamentally different layers of protection. Privacy app developer ArkWarden highlights this distinction, noting that a file left in its original form can still be exposed through backups, exports, or implementation errors even if an app requires Face ID. ArkWarden encrypts each stored file on-device using AES-256-GCM via Apple CryptoKit, with a 256-bit master key generated locally and never transmitted to external servers. The app uses PBKDF2 key derivation combined with the iPhone's Secure Enclave, meaning copied vault data cannot be brute-forced on another machine. Because no server-side account is involved in normal use, password reset via email is unavailable, so users are instead offered a 12- or 24-word recovery phrase, shifting more control and responsibility to the individual.

0
ProgrammingDEV Community ·

How to build a drift-free fullscreen countdown timer using vanilla JavaScript

A developer building a fullscreen countdown timer for blankscreen.io found that the standard setInterval approach causes time drift, especially in background tabs. To fix this, they used performance.now() with requestAnimationFrame to measure actual elapsed time instead of counting ticks. The Screen Wake Lock API was integrated to prevent devices from sleeping mid-countdown, with a visibility change listener to re-request the lock if the tab is backgrounded. Rather than loading an external audio file, a synthesized two-tone alarm was generated on demand using the Web Audio API, avoiding autoplay policy issues. The article shares reusable code snippets for each of these three techniques as progressive enhancements for any browser-based timer project.

0
ProgrammingHacker News ·

Pixy Launches Visual Editor Letting Coding Agents Edit Live Websites Like Figma

A new tool called Pixy has been introduced as a visual editor designed for coding agents to make changes directly on live websites. The tool draws comparisons to Figma, the popular interface design platform, but operates on deployed sites rather than static design files. Pixy was shared on Hacker News as a community showcase post, garnering early attention from developers. The product is accessible via its website at pixydesignapp.com, targeting developers and teams who want a more visual approach to AI-assisted web editing.

0
ProgrammingDEV Community ·

IoT Platform Replaces 10,000 Rules With 252-Entity Ontology, Cuts False Alarms by 79%

Industrial IoT platform DGIOT replaced its traditional rules-based alarm system with a 252-entity OWL ontology engine that understands equipment structure and context, not just raw sensor values. The shift was driven by problems at China's Daqing Oil Field, where false alarm rates exceeded 20% under the old system, causing operators to routinely ignore alerts. Instead of comparing readings against static thresholds, the ontology engine identifies equipment type, known failure modes, and multi-sensor patterns to recommend specific actions such as scheduling maintenance. The result was a drop in false alarms from 22% to 4.7%, a reduction in maintainable rules from over 10,000 to 252 entities, and an estimated $2.3 million in savings in the first year at Daqing. The platform, built on Erlang with OWL axioms compiled to native pattern matches, is open source under the Apache 2.0 license.

0
ProgrammingDEV Community ·

user-scanner: Open-Source OSINT Tool Unifies Email and Username Profiling

A Python-based open-source tool called user-scanner has been highlighted as a unified OSINT engine for digital reconnaissance workflows. Unlike older utilities such as Holehe and Sherlock, which handle only email or username lookups separately, user-scanner combines both into a single platform covering over 380 data vectors. The tool features an automated cross-scanning mode that recursively pivots between email addresses and usernames across multiple hops to map linked identities. It also integrates with Hudson Rock's infostealer breach database to flag targets appearing in compromised credential logs. Additional capabilities include TLS fingerprint impersonation via httpx and curl_cffi, proxy support, and export options in PDF, JSON, and CSV formats.

0
ProgrammingDEV Community ·

JavaScript Variables Explained: When to Use var, let, and const

A variable in JavaScript is a named container used to store values that can be referenced or updated throughout a program. JavaScript provides three keywords for declaring variables: var, the older method, and let and const, the modern alternatives. The let keyword is used when a value may change over time, such as a shopping cart total, while const is used for values that remain fixed, such as a roll number. When using const, a value must be assigned at the point of declaration and cannot be left empty. Developers are also advised to follow naming rules such as starting with a letter, avoiding reserved words, and using descriptive camelCase names for better code readability.

0
ProgrammingDEV Community ·

Three Cost Attribution Models for Multi-Tenant Chatbot APIs Explained

When building a marketplace SaaS chatbot that reviews code changes, choosing the right runtime pattern is critical for accurately attributing costs to individual tenants. Three main approaches exist: direct provider integration, a self-hosted gateway, and a managed broker, each with distinct trade-offs around control, operational burden, and billing transparency. Regardless of the pattern chosen, every API call must emit a complete usage record — including tenant ID, model used, token count, and fallback reason — even when a request shifts to a secondary model. A reliable evaluation should test all three patterns against the same fixture, covering normal responses, rate-limit errors, and timeouts, ensuring tenant attribution is never lost across attempts. The core principle is to define the accounting boundary first, since a single shared credential or automatic fallback adds little value if engineering teams cannot reconstruct each tenant's charges.

0
ProgrammingDEV Community ·

Why Bulk Database Inserts Stay Slow Even When Your Code Looks Fine

A common performance trap in database-heavy applications involves foreign key dependencies that force inserts to pause and retrieve auto-generated IDs before proceeding. When loading relational data — such as bands and their associated songs — each child record cannot be built until the parent's database-assigned ID is returned, creating an unavoidable sequential dependency. This means the entire load is split into distinct phases that cannot overlap, preventing parallel processing across tables regardless of batch size tuning. SQLAlchemy's insertmanyvalues feature, using INSERT...RETURNING, can speed up this process roughly 15 times by batching ID retrieval, but the fundamental sequencing constraint remains. The article argues the real bottleneck is architectural — an application waiting on the database to assign identities — rather than query performance or indexing.

0
ProgrammingDEV Community ·

Microsoft August 2026 Patch Tuesday: 790 CVEs Fixed, One Zero-Day Actively Exploited

Microsoft released its August 2026 Patch Tuesday update, addressing 790 vulnerabilities across its products, including 109 rated Critical and 396 rated Important. One zero-day, CVE-2026-68820, is already being actively exploited in the wild — a use-after-free elevation-of-privilege flaw in the Windows Ancillary Function Driver for WinSock that can allow a local attacker to gain SYSTEM-level access. The vulnerability has been added to CISA's Known Exploited Vulnerabilities catalog and affects all supported Windows versions, making it the highest-priority patch this cycle. Two additional flaws in the Windows User Profile Service and the Container Isolation FS Filter Driver were publicly disclosed before the update but have not yet been confirmed as exploited. The release also includes fixes for high-severity remote code execution bugs in Windows Deployment Services, SharePoint, and Azure SQL Database, among others.

0
ProgrammingDEV Community ·

Local vs Cloud LLMs: A Practical Framework for Choosing the Right Approach

Developers and organizations deploying AI in 2026 face a critical architectural choice between running large language models locally or using cloud-based APIs. Cost analysis shows that self-hosting becomes economical only beyond certain usage thresholds — for example, around 40 million tokens per month when compared to GPT-5.6 Sol pricing. Local deployment involves hardware, electricity, and engineering labor costs, while cloud APIs range widely from $0.14 to $10 per million tokens depending on the model. Beyond cost, the decision also hinges on privacy requirements, latency needs, vendor dependency risk, and long-term strategic flexibility. Hybrid architectures that combine both local and cloud models are increasingly popular as a way to balance these competing tradeoffs.

← NewerPage 152 of 1334Older →