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Kaigi on Rails 2025 登壇資料

Why I'm rooting for HTML.

Redux may feel old in the React world, but its predictability, ecosystem, and DevTools keep it relevant. This article explores when Redux still makes sense and how it compares to modern state management alternatives.

A while ago, I decided to move away from full-stack React frameworks and use a client-server setup. That is, separate the backend and the frontend, each being a standalone app. So, here’s the stack I ended up choosing: * Backend: Hono + Bun + PostgreSQL + Zod + Prisma + TypeScript + Better Auth * Frontend: React

RSC route rendering without waterfalls.

The library for web and native user interfaces

JSON (JavaScript Object Notation) was supposed to be the universal data interchange format that would solve the compatibility nightmares of XML. What looks like astraightforward data format becomes a minefield of subtle incompatibilities, edge cases, and implementation quirks that can break your applications in unexpected ways.

A list to stay safe from NPM supply chain attacks

How enforced discipline in one language can teach you better patterns in another - lessons from crossing the Elm/React boundary

When you see a `useEffect` that updates a `useState` and returns a value, you might be looking for a `useSyncExternalStore`. This is my current vendetta.

Next.js Starter Kit. Contribute to kovrichard/catalyst development by creating an account on GitHub.

If you're working on a plain Ruby project and need an interactive console for debugging and exploration, this post covers how to set one up. A console allows quick experimentation with project classes, making it easier to test calculations, inspect data, and validate logic without writing temporary scripts. The setup is simple and provides a Rails-like experience for loading and interacting with the code.

Extension for Visual Studio Code - Manage git worktrees with ease

I recently discovered Git worktrees, and they've completely changed how I work with Git. I'd heard...

Why the U.S. Supreme Court case Cox v. Sony matters for developers and sharing updates to our Transparency Center and Acceptable Use Policies.

One of the significant improvements in PG18 is AIO. What are some basic tuning recommendations?

A step-by-step guide describing how to implement rate limiting in Postgres using advisory locks and counters

You probably don’t need a collection of specialty databases. Just use Postgres instead! Need a fast, reliable SQL-compliant RDBMS? Just use Postgres! Need to work with geospatial data? Just use Postgres! Handling semi- or non-structured documents? Just use Postgres! Generative AI embeddings? You’ve got it—just use Postgres! Written for software engineers and database pros, Just Use Postgres shows you how to get the most out of the powerful PostgresSQL database. In Just Use Postgres! you’ll learn how to: Develop generative AI, geospatial, and time-series applications Everything from transactional RDBMS services to specialized workloads Modern SQL including window functions, CTEs, and JSON data Implement full-text search B-trees, GIN, HNSW, expression, and more Postgres extensions Since its initial release in 1996, PostgreSQL, aka Postgres, has grown into the most popular and powerful full-featured open source RDBMS available. Just Use Postgres! takes a modern look at Postgres, exploring the database’s most up-to-date features for AI, time-series, full-text search, geospatial, and other application workloads.

Thank you to everyone who came to listen to my talk, "Postgres Partitioning Best Practices", at Euruko in Viana do Castelo, Portugal ...

Learn how to speed up PostgreSQL by moving WAL to its own disk. Cut I/O contention and improve write performance safely.

Terraform-style, declarative schema migration for Postgres - pgschema/pgschema

Declarative schema migration for Postgres

PostgreSQL Audit Extension. Contribute to pgaudit/pgaudit development by creating an account on GitHub.

PlanetScale for Postgres is now generally available.

Copilot coding agent, our asynchronous, autonomous developer agent, is now generally available for all paid Copilot subscribers. Delegate a task to Copilot, and Copilot will open a draft pull request…

https://regional.rubykaigi.org/nagara01/ の登壇資料です。 --- Ruby3.2以降、refinementsにおけるメソッド定義はパフォーマンスが大幅に劣化しており、実は3.2〜3.5で1万倍弱遅くなっています。 私たちが開発する社内サービスで…

Important details about GPT-5-Codex: This model is not a drop-in replacement for GPT-5, as it requires significantly different prompting....

【Unit1 ブログリレー 6日目】 この記事はUnit1ブログリレー 6日目の記事です。前日の記事は こちら 。 エンジニアリンググループGMの木田です。 先日、数年に一度の規模のシステムメンテナンスを実施しました。メンテナンス作業自体は複数のチームが関わり、サービスの計画停止も伴う複雑な作業だったにもかかわらず、入…

Public preview for the new Chrome DevTools MCP server, bringing the power of Chrome DevTools to AI coding assistants.