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Psych offers a libfyaml backend now. Do you need it?

Comprehensive guide to testing Rails applications using Minitest

GitHub Actions で使用する Action をコミット SHA に固定すると安全性が高まる一方、更新作業が煩雑になります。pnpm 11.16.0 で追加された `pnpm update --include-github-actions` を使うと、パッケージと Action の更新を同じコマンドで管理できます。この記事では基本的な使い方を確認します。

多くのグラフライブラリがある中、TanStack Charts はなぜ作られたのでしょうか。この記事では、TanStack Charts の設計思想を整理し、React で売上の折れ線にキャンペーンの注釈を重ねるサンプルを紹介します。

It's time for a vibe shift

日本語の文章からAI臭を取り除く Claude Skill. Contribute to iKora128/stop-ai-slop-jp development by creating an account on GitHub.

Claude Codeで複数の作業を並列に動かせるようになると、次に増えるのは「待ち」と「確認」だ。CIが落ちた、レビューが返ってきた、長い処理が終わった、外部サービスが復旧した。これらを人が見つけて、結果をコピーし、次の指示を出している限り、人が作業の中継地点になってしまう。 この発表では、LS…

Object allocations from the garbage collector are now inlined in ZJIT.

Did you know: PG19 is on track to contain the most changes to pg_catalog in historyIntroduction

📌 Overview We recently switched to version 7 (v7) uuid primary keys and saw significantly faster inserts for some tables. The databases were running Postgres 18.4 and mostly used v1 with some v4 uuid values for primary keys. Changing the column default involved running a single alter table command, but did require an exclusive lock on the table, blocking everything including selects. To solve that, we used a short lock timeout and lots of retries. The biggest speedup was 23x faster average execution time for a multi-row insert query called 12000 times per minute on a table with billions of rows.

Postgres Terminal (GUI)

Introduction The purpose of this blog post is to introduce pg_shmemviz, a new tool to visualize PostgreSQL shared memory. It follows the same approach as pg_walviz, bringing physical layout and byte level navigation to PostgreSQL shared memory instead of WAL segments. Views such as pg_shmem_allocations, pg_buffercache and pg_shmem_allocations_numa are useful...

WAIT FOR in PostgreSQL 19 lets a reader block until the replica has replayed a specific LSN. Measured against sticky routing, sleeps, and synchronous commit, on a replica that misses the write 99% of the time.

Articles by Jeroen Engels, mostly around Elm, static analysis and more generally programming

42M monthly visitors, 400 routes and 850K lines of code moved from Next.js on Vercel to TanStack Start on Lovable—route by route, mostly by agents, with one 11-minute incident along the way.

JavaScript image cropper. Contribute to fengyuanchen/cropperjs development by creating an account on GitHub.

JavaScript image cropper.

Audited & minimal JS implementation of elliptic curve cryptography. - paulmillr/noble-curves

Agents can finish the task without teaching you anything. Building expertise now has to be deliberate.

When Rosa first released SolidQueue, she did a fantastic talk on the internals of how it works and what trade-offs she made when building it. You should give it a watch. It’s where I first learned how the SolidQueue approach works, and why it performs as well as it does. I wrote the batch implementation for SolidQueue (with feedback from loads of folks!), so as a complement to Rosa’s original talk, here’s a bit about how the internals of batches work.

Learn and use all shortcuts easily with KeyClu

こんにちは、Insight Edgeでエンジニアをしている島田です。 現在は社内向けのAIエージェント基盤(名前はLoom)を開発しているため、AIエージェントの開発に携わっている方や社内でエージェント基盤の内製を検討している方へ向けて、エージェント基盤の設計の考え方と内製の判断について紹介したいと思います。 記事を通…

SAFe 6 is an update to the SAFe Framework to help organizations become Lean Enterprise and achieve Business Agility. Learn more and see FAQs about 6.

自分史上最高のウェブアプリケーションフレームワークを作るにあたって、設計知識を小さなファイルの集合としてAIに持たせる「ナレッジ中心設計」を試しました。OKFとの違い、ワークフロー、複数リポジトリでエージェント同士に議論させた話まで書いています。

Permanent ids and self-documenting binders for your files, in plain text; references survive renames, moves, and a change of machine. - rhsev/fileregister

Why is the military and a cheese fortune teller contacting me about SondeHub.org