Search the archive

when needed. TRY IT FOR FREE TODAY.

TZ-LOOKUP

tz-lookup is a fast but approximate JavaScript library for determining time zones from latitude and longitude.

RUBYLLM

RubyLLM is a Ruby gem that provides a unified interface for interacting with AI models like OpenAI, Anthropic, and Gemini. It makes tasks like chatting, image generation, embedding creation, and using AI tools within Ruby applications easier. It also has features like streaming responses, file analysis, and easy Rails integration for persistent conversations.

MASTRA COURSE

This is a course where you can learn to build and deploy AI agents with tools, memory, and MCP. The course itself is delivered within an agentic code editor and guided by a code agent who helps you build real agents from scratch.

“LOCALHOST TRACKING” EXPLAINED. IT COULD COST META 32 BILLION

Meta developed a sneaky "localhost tracking" system that bypassed Android's security to identify users across different browsers and apps, even with VPNs and incognito mode enabled. This involved the Facebook/Instagram app secretly communicating with Meta's tracking scripts on websites to link browsing activity to user accounts. Meta now faces potential cumulative fines potentially reaching €32 billion under GDPR, DSA, and DMA due to this privacy violation.

CONTAINERS SHOULD BE AN OPERATING SYSTEM RESPONSIBILITY

Containerization is an overweight solution that operating systems should address. Alternatives to containerization include installing dependencies directly, self-contained deployments, and ahead-of-time compilation to mitigate fragile dependency trees.

OPENAI'S O3 COST DROPS BY 80%

The cost of using the OpenAI o3 model's API has been cut down by 80%.

SMART PEOPLE DON'T CHASE GOALS; THEY CREATE LIMITS

Instead of chasing specific goals, smart people focus on creating constraints on purpose, as this can actually lead to a more focused, meaningful path overall.

HOW WE'RE ADAPTING SEO FOR LLMS AND AI SEARCH

As search is starting to be dominated by AI, companies and content creators need to adapt their SEO strategies to focus on producing clear, deep, structured, and original content that both LLMs and traditional search engines can understand and surface.

ANDROID 16 IS HERE

Android 16 is launching with streamlined notifications, better hearing device support, stronger security, improved tablet productivity features, and a new Material 3 Expressive design.

Connect up to five accounts for FREE and start building ↗️

HOW OPENAI USES APACHE KAFKA AND FLINK FOR GENAI

OpenAI uses Apache Kafka and Flink in its real-time data streaming infrastructure. Kafka handles high-volume data ingestion and delivery across multiple cloud regions, while Flink processes this data with low latency, allowing for continuous feedback loops and real-time AI operations. OpenAI uses custom enhancements to scale PyFlink, manages Kafka consumption with Kafka Forwarder, and consolidates Kafka clusters with a multi-cluster architecture.

HOW IMPORTS WORK IN RSC

React Server Components (RSCs) extend JavaScript's module system to span both client and server, using directives like 'use client' and 'use server' to clearly define where code runs. Instead of copying code between environments, these directives act like controlled entry points, while “poison pills” like server-only or client-only imports prevent accidental leaks by causing build-time errors. This creates two separate but connected module systems, allowing safe code sharing and controlled data flow between frontend and backend.

RESILIENT IMPORT MAPS - BETTER THEME DEVELOPMENT AND BEYOND (2025)

Shopify discovered that JavaScript import maps were too fragile for real-world use. They would break if any modules loaded before them or if multiple maps existed on the same page. Working with web standards experts, Shopify developed and implemented a reconciliation mechanism that allows multiple import maps and modules to coexist safely, which shipped in Chrome 133 and Safari 18.4.

LLMS ARE CHEAP

Contrary to common belief, LLMs are now relatively cheap to operate. When comparing LLM pricing to web search API costs, LLMs can be much cheaper, even when accounting for token usage and response length.

WHY GO IS A GOOD FIT FOR AGENTS

Go is a good fit for building AI agents due to its concurrency model, channel-based communication, centralized cancellation mechanism, standard library, and excellent profiling tools. Go's simple concurrency allows for efficient handling of many long-running agent processes, while channels facilitate asynchronous message passing.

WHY AGENTS ARE BAD PAIR PROGRAMMERS

Current LLM agents make poor pair programmers because they code too quickly for human collaboration. Instead, they are better for asynchronous workflows like code review or in slower, turn-based modes.

the answer starts with a metrics-driven mindset. Read the eBook

APPLE SUPERCHARGES ITS TOOLS AND TECHNOLOGIES FOR DEVELOPERS

Apple has announced a range of new tools and technologies for devs in the Apple ecosystem. It has introduced a redesigned software interface incorporating "Liquid Glass" for a more visually appealing and intuitive user experience. Developers can now use the Foundation Models framework for on-device AI capabilities and integrate large language models like ChatGPT directly within Xcode 26 for coding assistance.

REACT NATIVE DEVTOOLS

React Native DevTools is a macOS app that makes debugging for React-based applications easier. It provides real-time monitoring and management of React Query state, device storage, and environment variables with a native interface.

QNM

Qnm is a CLI utility to quickly query and inspect the `node_modules` directory. It has features like interactive fuzzy-search, version checking, monorepo support, and explanation of package installation origins.

BRUTEFORCING THE PHONE NUMBER OF ANY GOOGLE USER

A BIT MORE ON TWITTER/X'S NEW ENCRYPTED MESSAGING

XChat is X's new end-to-end encrypted messaging protocol. It uses a key storage system called Juicebox. XChat has a major vulnerability in its key storage approach, where user private keys are stored on X's servers, allowing X to decrypt messages. Juicebox hardens passwords by splitting key material across multiple servers, but its security depends on the use of Hardware Security Modules (HSMs) and distributed trust, which are questionable in XChat's implementation.

WRITE MORE RELIABLE JAVASCRIPT WITH OPTIONAL CHAINING

Optional chaining (?.) in JavaScript is a cleaner, safer, and more concise way to access deeply nested object properties by short-circuiting the evaluation and returning undefined without errors when encountering null or undefined values.

CONTAINERIZATION

Apple's Containerization package allows applications to run Linux containers on Apple silicon Macs by using Virtualization.framework, providing APIs to manage OCI images, interact with registries, create file systems, and more.

ADD APP SHORTCUTS TO YOUR EXPO APPLICATIONS

This blog post explains how to add custom app shortcuts to React Native Expo applications using the `expo-quick-actions` library.

GETTING PAST PROCRASTINATION

Action precedes motivation, so small steps are needed to initiate productivity and avoid procrastination.

you want

HOW WE DECREASED GITLAB REPO BACKUP TIMES FROM 48 HOURS TO 41 MINUTES

GitLab reduced its GitLab repository backup times from 48 hours to 41 minutes by identifying and fixing a performance bottleneck in a 15-year-old Git function. The issue was from an inefficient O(N²) algorithm used to handle duplicate references within the `git bundle create` command. GitLab replaced the nested loops with a map data structure, leading to a 6x performance improvement.

A JAVASCRIPT DEVELOPER'S GUIDE TO GO

This is a guide for JavaScript devs transitioning to Go. It covers fundamental concepts like compilation, packages, variables, structs, error handling, and concurrency, comparing them to their JavaScript equivalents. It also goes over important Go-specific concepts, like its explicit error handling and its powerful concurrency model using goroutines.

SEARCH PARAMS ARE STATE

This article discusses the common issue of treating URL search parameters as an afterthought in web development, leading to inconsistent data handling and potential bugs. TanStack Router integrates search parameter schemas directly into the routing layer. This allows URL search parameters to be treated as state, making them easily shareable and resistant to reloads. The approach also allows for type-safe validation, inference, and coordination of search parameters across different routes and components.

FIELD NOTES FROM SHIPPING REAL CODE WITH CLAUDE

There are three effective modes of AI collaboration: AI as First-Drafter, Pair-Programmer, and Validator, highlighting the shift from writing code to editing and directing AI. To use AI effectively as a collaborator, it's useful to have infrastructure components like CLAUDE.md files and anchor comments, along with git workflows, to manage AI-generated code.

WHAT "WORKING" MEANS IN THE ERA OF AI APPS

AI startups are achieving faster revenue and quicker funding rounds than pre-AI startups. Both enterprise and consumer AI companies are showing impressive growth, with consumer companies now generating significant revenue compared to pre-AI.

SELF-HOST & TECH INDEPENDENCE: THE JOY OF BUILDING YOUR OWN

Devs should own their domain and host their own content to maintain control and build long-term value. This dev self-hosts various services like their blog, second brain, and home server.

ODYC.JS

Odyc.js is a small JavaScript library designed to make video game creation accessible even without prior programming experience.

BEACHPATROL

Beachpatrol is a CLI tool that automates and replaces your everyday web browser using Playwright scripts. It lets users control a Chromium or Firefox browser with the command line, integrating browser tasks into custom workflows and OS scripts.

WHAT WAS RADIANT AI, ANYWAY?

This a deep dive into Bethesda's Radiant AI system, exploring its origins, promises, and realities in the Elder Scrolls IV: Oblivion. The article traces the evolution of Radiant AI from Morrowind through subsequent Bethesda titles like Skyrim and Starfield, detailing how it was intended to create a dynamic and living world through non-scripted NPC behavior. While the system never fully achieved its initial ambition, it laid the groundwork for later AI advancements in Bethesda games and is still used in current versions of the engine.

THE HIDDEN TIME BOMB IN THE TAX CODE THAT'S FUELING MASS TECH LAYOFFS

A change to Section 174 of the US tax code, implemented as part of the 2017 Tax Cuts and Jobs Act, disallowed companies from immediately deducting research and development expenses, requiring them to amortize them over several years. This shift made R&D more expensive, impacting cash-strapped tech companies and contributing to mass layoffs that were often blamed on other factors like over-hiring or AI.

I READ ALL OF CLOUDFLARE'S CLAUDE-GENERATED COMMITS

Cloudflare's open-sourced OAuth 2.1 library, which was primarily written by Claude, has a commit history with prompts. Some patterns in the creation of it include prompt-by-example and iterative refinement with specific feedback. Prompts could be treated as part of the source code in the future, allowing for easy regeneration of codebases with improved models.

AI CODING AGENTS

A performance comparison of AI coding agents like GitHub Copilot, OpenAI Codex, Cursor Agents, Devin, and Codegen that shows their success rates in generating merged pull requests - OpenAI Codex currently leads at 83.3%.

FOCUS AND CONTEXT AND LLMS

While LLMs can complete complex coding tasks with sufficient context and algorithmic supervision, the current hype around "agentic coding" as a hands-off solution is misplaced, as these models require intense management and context curation from skilled engineers for valuable results.

FALSEHOODS PROGRAMMERS BELIEVE ABOUT AVIATION

Programmers make numerous incorrect assumptions about aviation data.

REACT NATIVE TEAM OFFICIALLY FREEZES THE LEGACY ARCHITECTURE

The new React Native architecture was promoted to stable in October 2024 for all projects.

REVERSE ENGINEERING LINEAR'S SYNC ENGINE: A DETAILED STUDY (1 HOUR READ)

This document reverse-engineers Linear's Sync Engine (LSE). LSE uses models defined with JavaScript classes and decorators, using MobX for observability and a sophisticated bootstrapping and lazy loading system. Client-side changes are sent as transactions to the server and are managed using a transaction queue, with conflict resolution handled using a "last-writer-wins" strategy.

ONE ROUNDTRIP PER NAVIGATION

Navigating to a new page should ideally involve a single request to fetch the necessary data. Client-side logic and component-based architectures, while offering colocation of UI and data fetching, often lead to inefficient multiple requests and client-server waterfalls. Server Loaders centralize data fetching but sacrifice colocation, while GraphQL and React Server Components (RSC) attempt to achieve both colocation and single-round trip efficiency by composing data dependencies or rendering components on the server.

WHAT A DEVELOPER NEEDS TO KNOW ABOUT SCIM

SCIM (System for Cross-domain Identity Management) is a standard used by identity providers to communicate user changes (additions, updates, and removals) to other software. It makes integration easier by standardizing JSON formats for CRUD operations between the identity provider and the software application.

TRACK ERRORS FIRST

Error tracking is the most valuable signal in observability, but is often overshadowed by logs, metrics, and traces. Exceptions show that programmer assumptions have failed, making them the most informative events to track with detailed context. Errors should never be treated as generic events.