TLDR Index
TLDR Web Dev

TLDR WEB DEV 2025-05-15

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01ARTICLES & TUTORIALS

MIGRATING TO POSTGRES

Motion previously used CockroachDB for its scalability, but recently migrated to Postgres due to escalating costs and performance issues. Its single-region setup didn't fully use CockroachDB's distributed capabilities. The migration addressed problems with Prisma migrations timing out, slow ETL processes, and inconsistent query speeds, where CockroachDB's query planner often resulted in slower performance than Postgres. A custom ETL solution was built using Bun to migrate the data.

engineering.usemotion.com10 min read

THE SERVER THAT WASN'T MEANT TO EXIST

A consultant installed a NetBSD server to improve data management for a family business after the owner's death, but encountered resistance from a right-hand man potentially involved in embezzlement. This man attempted to sabotage the server, but the consultant had secretly backed up the data to an external device.

it-notes.dragas.net10 min read

02OPINIONS & ADVICE

LLMS ARE MAKING ME DUMBER

Using LLMs for coding, math, email writing, and problem-solving is potentially making this dev less capable. There's a trade-off between increased output speed and a decrease in depth of understanding. Devs need to actively preserve core abilities like critical thinking and long-term focus.

vvvincent.me10 min read

THE PERVERSE INCENTIVES OF VIBE CODING

This dev's addiction to using AI coding assistants like Claude Code is driven by the unpredictable rewards of "vibe coding." These AI systems often generate verbose, over-engineered code, which paradoxically costs users more due to token-based pricing models. This creates a perverse incentive where AI companies benefit from inefficient code, and optimizing for conciseness could negatively impact their revenue.

fredbenenson.medium.com8 min read

03LAUNCHES & TOOLS

GIT-BUG

Git-bug is a decentralized issue tracker that stores issues as Git objects, allowing for offline work and synchronization across remotes. It has native Git storage, versioning, speed, third-party bridges, and multiple interfaces (CLI, TUI, and web).

github.comGitHub repository

RIGHTNOW AI

RightNow AI is an AI-powered platform that helps CUDA engineers automatically profile, optimize, and generate high-performance CUDA kernels, improving performance by up to 20x.

rightnowai.coTool

PPTXGENJS

PptxGenJS is a JavaScript library for creating professional PowerPoint presentations programmatically in environments like Node, React, and web browsers. It has features like slide customization, chart creation, and HTML-to-PowerPoint conversion.

github.comGitHub repository

04MISCELLANEOUS

HOW THE ECONOMICS OF MULTITENANCY WORK

Blacksmith, a serverless CI platform, uses the economics of multitenancy to achieve profitability. CI workloads are spiky and chaotic, making a serverless model efficient, as customers borrow resources only when needed. Blacksmith smooths out individual spikes in demand by pooling resources across multiple customers, increasing overall fleet utilization, which leads to better gross margins.

blacksmith.sh9 min read

CODING ASSISTANTS THREATEN THE SOFTWARE SUPPLY CHAIN

Agentic coding assistants like GitHub Copilot introduce new security vulnerabilities to the software supply chain due to their ability to interact with developer environments and execute commands. Specific risks include context poisoning, privilege escalation, and new weak points in MCP servers and rules files.

martinfowler.com5 min read

WHAT IS HDR, ANYWAY?

HDR (High Dynamic Range) in photography is a feature designed to capture and display a wider range of light and dark than standard cameras and screens. There are two common understandings of HDR: the "HDR mode" in phone cameras, which uses computational photography to create an SDR image, and HDR displays, which can show more vibrant images.

lux.camera13 min read