Best of daily.dev — January 2026

  1. 1
    Article
    Avatar of yhf9cpdgtqetokv6d8qhmJohn Liter·17w

    Why W3Schools Became the Foundation of My Coding Journey and Why I’m Passing It On

    W3Schools served as a foundational learning platform that emphasized understanding over memorization through simple explanations, immediate feedback loops, and hands-on experimentation. The platform has evolved to include structured learning paths, in-browser editors, and progress tracking while maintaining its focus on teaching fundamentals. In an era of AI-generated code, understanding how to read code and reason through problems remains crucial, making platforms that teach core concepts more relevant than ever.

  2. 2
    Article
    Avatar of uu1stggjldm9pqp0qluf0Amit Gajare·19w

  3. 3
    Article
    Avatar of lobstersLobsters·18w

    I Replaced Redis with PostgreSQL (And It's Faster)

    PostgreSQL can replace Redis for caching, pub/sub, job queues, and sessions using UNLOGGED tables, LISTEN/NOTIFY, SKIP LOCKED, and JSONB. While PostgreSQL is 50-158% slower per operation (0.1-1ms difference), it eliminates network hops between databases, reduces infrastructure costs by ~$100/month, simplifies operations, and guarantees transactional consistency. The approach works best for small-to-medium apps with simple caching needs but isn't suitable for high-throughput scenarios (100k+ ops/sec) or applications requiring Redis-specific data structures like sorted sets or HyperLogLog.

  4. 4
    Article
    Avatar of devjourneyDeveloper's Journey·18w

    It Worked in Dev. It Worked in QA. Then Production Happened.

    A backend engineer shares a production incident where an appointment-fetching endpoint worked fine in dev and QA but caused 4-second response times in production. The issue was an N+1 query problem: the code made 6,000+ individual database calls to fetch patient details. The solution involved batching patient data retrieval into a single query using in-memory maps and adding proper projections, reducing latency to 500-600ms. The incident highlights the importance of testing with realistic data volumes, thorough code reviews, and anticipating edge cases during development.

  5. 5
    Article
    Avatar of chromeChrome Developers·18w

    Introducing the <geolocation> HTML element

    Chrome 144 introduces the `<geolocation>` HTML element, a declarative alternative to the JavaScript Geolocation API. This element requires user interaction (clicking a button) to request location data, reducing accidental blocks and browser interventions. It evolved from a generic `<permission>` element after origin trial feedback showed improved user trust and success rates. The element simplifies implementation by handling permission states automatically, supports attributes like `autolocate` and `watch`, and includes styling constraints to prevent deceptive patterns. A polyfill and progressive enhancement strategies ensure backward compatibility with browsers that don't support the new element.

  6. 6
    Article
    Avatar of webnepalWeb Nepal·17w

  7. 7
    Article
    Avatar of supabaseSupabase·16w

    Introducing: Postgres Best Practices

    Supabase released Agent Skills for Postgres Best Practices, a collection of 30 rules across 8 categories to help AI coding agents write correct, performant Postgres code. The rules follow the Agent Skills open standard and cover critical areas like query performance, connection management, Row Level Security, schema design, and concurrency. The repository addresses common mistakes seen across hundreds of thousands of Postgres projects, such as missing indexes, RLS bypasses, and connection pool exhaustion. These best practices complement the Supabase MCP server by teaching agents proper judgment while the MCP server handles database connections and execution.

  8. 8
    Article
    Avatar of vlg5h0gcnu7htgcs5hyexKrzysztof·18w

    What is your most used design pattern

    A developer shares their experience with design patterns, noting that while many patterns exist, few are commonly implemented in practice. The Singleton pattern stands out as their most frequently used pattern, first encountered while working with Unity Engine for managing shared state across scenes, and later applied across various technologies including Java and TypeScript. The post invites others to share their most commonly used design patterns.

  9. 9
    Article
    Avatar of cassidooCassidy's blog·17w

    Do not give up your brain

    While AI tools like ChatGPT can be valuable assistants, over-reliance on them for basic tasks like writing emails or generating responses can atrophy critical thinking skills. People who depend on AI for communication often struggle in real-time conversations. Maintaining mental sharpness requires actively using your brain rather than defaulting to AI for every task. The key is treating AI as a tool to augment thinking, not replace it.

  10. 10
    Article
    Avatar of devtoDEV·17w

    Microservices Are Killing Your Performance (And Here's the Math)

    Microservices introduce significant performance overhead compared to monolithic architectures. Network calls add 1,000-5,000x latency versus in-process function calls, resulting in 50-150% higher latency, 300% more resource usage, and 2-3x infrastructure costs. Benchmarks show microservices suffer from cascading failures (5x more downtime), database connection exhaustion, and serialization overhead. The article argues microservices solve organizational problems (team autonomy, independent deployment) rather than technical ones, and recommends modular monoliths for most applications. Microservices only make sense for organizations with 50+ engineers, independent scaling requirements, technology diversity needs, or compliance isolation.

  11. 11
    Article
    Avatar of daily_updatesdaily.dev Changelog·18w

    Your year. Wrapped.

    daily.dev has launched Log 2025, a year-in-review feature that analyzes your reading activity and reveals your developer archetype. Users can visit the platform to discover personalized insights about their learning journey throughout the year.

  12. 12
    Article
    Avatar of techworld-with-milanTech World With Milan·15w

    You can code only 4 hours per day. Here’s why.

    Research shows developers can only sustain 3-4 hours of deep, focused coding per day due to cognitive limits. Studies reveal the median developer codes just 52 minutes daily, with 11+ hours weekly consumed by meetings. Interruptions cost 23+ minutes to recover from, and achieving flow state requires 15-25 uninterrupted minutes. Practical strategies include time-blocking, eliminating context switching, protecting morning hours, and setting no-meeting days. AI coding assistants don't extend deep work capacity but can handle shallow tasks. Engineering managers should prioritize removing meetings over adding processes to maximize team productivity.

  13. 13
    Article
    Avatar of hnHacker News·19w

    I'm brave enough to say it: Linux is good now, and if you want to feel like you actually own your PC, make 2026 the year of Linux on (your) desktop

    Linux has become genuinely user-friendly for desktop use, especially for gaming. Distros like Bazzite make it easy to run games without command-line knowledge, often matching or exceeding Windows performance through Valve's Proton. Steam's Linux user base hit 3.2%, surpassing Mac. The main appeal is ownership and control—no forced AI features, bloatware, or upselling. While HDR support and some anticheat software remain issues, they're improving. Linux offers a viable alternative for users tired of Windows feeling like rented software rather than something they truly own.

  14. 14
    Article
    Avatar of bx9otzgznigp44w6k47lsXavier Womack·15w

    Claude: the #1 AI for programmers?

    Claude outperformed ChatGPT and other AI models in a coding task involving Tauri and glassmorphic windows. While ChatGPT provided outdated code and hallucinations, Claude delivered precise and accurate solutions within minutes. The author suggests Anthropic prioritizes coding capabilities more than competitors, making Claude a top choice for programming assistance despite other models ranking higher on synthetic benchmarks.

  15. 15
    Article
    Avatar of phProduct Hunt·16w

    RelateDB: Offline-first database schema designer in your browser

    RelateDB is a browser-based database schema designer that works entirely offline without requiring accounts or cloud services. It allows developers to visually model tables and relationships, import and export SQL or DBML formats, auto-arrange diagrams, and export schemas as images. All functionality runs locally in the browser for fast, frictionless schema design.

  16. 16
    Article
    Avatar of frontenddesignideasFrontend Design Ideas·17w

    1000+ website design ideas (categorized by section)

  17. 17
    Article
    Avatar of hordeHorde·17w

  18. 18
    Article
    Avatar of piccalilliPiccalilli·18w

    Date is out, Temporal is in

    JavaScript's Date constructor has fundamental flaws: zero-indexed months, inconsistent parsing, mutable objects representing immutable real-world dates, and poor timezone support. The new Temporal API solves these issues with immutable-style methods that return new objects instead of mutating existing ones, explicit timezone handling, intuitive syntax for date arithmetic, and built-in formatting. Temporal is now in stage 3 of standardization and available in Chrome and Firefox for experimentation.

  19. 19
    Article
    Avatar of freecodecampfreeCodeCamp·16w

    Learn Dynamic Programming Through Dynamic Visuals

    A comprehensive 2-hour video course teaches dynamic programming through visual patterns rather than memorization. Created by an ex-Google engineer, it covers six fundamental DP patterns including constant transition, grid patterns, two sequences, interval DP, non-constant transition, and knapsack problems. Each pattern is explained with logic and Python code examples, using classic problems like Climbing Stairs, Longest Common Subsequence, and Coin Change to build intuition for optimization.

  20. 20
    Article
    Avatar of hnHacker News·19w

    A Website To End All Websites

    The modern internet has devolved from a creative, educational space into an attention-extracting machine dominated by algorithmic feeds and corporate platforms. Drawing on Ivan Illich's concept of convivial tools, the piece argues that personal websites—hand-coded, independently owned, and syndicated through protocols like RSS and Webmentions—represent the antidote to platform monopolies. By building small, reducing friction to publishing, and leveraging IndieWeb standards, developers can reclaim autonomy, creativity, and meaningful connection online.

  21. 21
    Article
    Avatar of openaiOpenAI·16w

    Scaling PostgreSQL to power 800 million ChatGPT users

    OpenAI scaled PostgreSQL to handle millions of queries per second for 800 million ChatGPT users using a single primary Azure PostgreSQL instance with nearly 50 read replicas across multiple regions. Key optimizations included offloading reads to replicas, migrating write-heavy workloads to sharded systems like CosmosDB, implementing PgBouncer for connection pooling, deploying cache locking to prevent cache-miss storms, isolating workloads to prevent noisy neighbor issues, and enforcing strict rate limiting. The architecture achieved five-nines availability with low double-digit millisecond p99 latency despite PostgreSQL's MVCC limitations for write-heavy workloads.

  22. 22
    Article
    Avatar of ubqa4zl8noglmlpvdnr79Prince Kumar·16w

    Serious question for devs: What replaces Brave in 2026?

    A developer shares their experience switching to Brave browser, highlighting its built-in ad and tracker blocking capabilities. They note performance improvements like faster page loads and cooler laptop operation, plus ad-free experiences on YouTube and Spotify web without premium subscriptions. The post asks what browser might replace Brave in 2026, implicitly questioning whether any alternative offers comparable features.

  23. 23
    Article
    Avatar of stitcherstitcher.io·17w

    Processing 11 million rows in minutes instead of hours

    A developer optimized their blog's analytics system to process 11 million events, improving performance from 30 to 14,000 events per second through systematic changes: removing unnecessary database sorting, reversing nested loops, ditching the ORM for raw queries, replacing closures with while loops, fixing framework serialization overhead, and using indexed ID-based pagination instead of offsets. The rebuild time dropped from 50 hours to 10 minutes per projector.

  24. 24
    Article
    Avatar of hnHacker News·18w

    I dumped Windows 11 for Linux, and you should too

    A personal account of switching from Windows 11 to Linux (Artix) on primary work and personal machines. The author details motivations including Windows telemetry concerns and system instability, explores various Linux distributions (Mint, Debian, Artix), and shares technical challenges encountered like WiFi driver issues on a MacBook Air and desktop environment bugs. Despite initial hurdles requiring command-line troubleshooting, the switch resulted in improved system stability, faster performance, better iPhone file management via Dolphin file manager, and renewed enjoyment in computing. The author advocates for Linux adoption given Windows 11's ongoing issues, noting that while Linux requires technical learning, distributions like Mint offer beginner-friendly experiences.

  25. 25
    Article
    Avatar of webnepalWeb Nepal·17w

    The Rise of Contextual Vibe Coding

    Most developers use AI coding tools ineffectively by providing vague prompts without context. The key to productive AI-assisted coding is providing dense context about your stack, architecture, constraints, and intent before asking for code. LLMs function like fast interns with perfect recall but zero situational awareness, requiring explicit information about existing decisions, tradeoffs, and boundaries. Around 60% of AI-generated code requires edits because prompts lack system-level context, clear goals, constraints, and feedback loops.

See all daily.dev archives