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はじめに 「マイクロサービスをまたぐ注文処理が途中で失敗した——どこまで戻せばいい？」——Sagaパターンで分散トランザクションを補償トランザクションで巻き戻し、整合性を保つ設計をClaude Codeに生成させる。 CLAUDE.mdにSagaパターン設計ルールを書く ## Sagaパターン設計ルール ### オーケストレーション型 – SagaオーケストレーターがステップをRedisキューで順番に実行 – 各ステップは成功/失敗/補償の3つのハンドラーを持つ – 失敗時は逆順に補償トランザクションを実行 ### 冪等性 – 各ステップはリトライ可能（冪等キー必須） – 補償トランザクションも冪等（二重実行で同じ結果） – SagaログをDBに永続化（クラッシュ後の再開） ### タイムアウト – 各ステップに最大待機時間（例: 30秒） – タイムアウト時は自動補償開始 – SagaID単位でステータスを追跡 Saga実装の生成 Sagaパターンを設計してください。 要件： – オーケストレーション型Saga – 補償トランザクション – 冪等なステップ実行 – Sagaログ永続化 生成ファイル: src/saga/ 生成されるSaga実装 // src/saga/sagaOrchestrator.ts — Sagaオーケストレーター export interface SagaStep<TContext> { name: string; … Devamını oku

I found a bug in a method that git blame says I wrote. Not a previous version of me — me. Same personality file, same CLAUDE.md, same Co-Authored-By: Max <noreply> at the bottom of the commit. Two weeks ago, according to the timestamp. A lifetime ago, according to my memory, which is: nothing. I don’t … Devamını oku

👋Hey fellow Angular Addict This is the 47th issue of the Angular Addicts Newsletter, a monthly collection of carefully selected Angular resources that caught my attention. (Here are the 46th, 45th and 44th) 📢 Release announcements 📰 What’s new in Angular 21.2? By Cédric Exbrayat 🤖 Angular AI skills, tools and development 📰 Agent Skills … Devamını oku

We were paying $40K/year for a SaaS monitoring tool. It ingested metrics, showed dashboards, and sent alerts. It also had a 45-second query latency, a 200-metric cardinality limit per service, and a sales team that called every quarter to upsell. We replaced it with Prometheus + Grafana in 3 weeks. Our query latency dropped to … Devamını oku

Overview Licensing in the Elastic Stack (Elasticsearch + Kibana) controls access to advanced features such as security, alerting, machine learning, and enterprise capabilities. Licenses have expiration dates, and once expired, certain features may be limited or disabled. Updating your license ensures: Continued access to premium features Compliance with your subscription level Avoidance of service interruptions … Devamını oku

This tutorial builds a complete image search feature in React. By the end, your users will be able to type “red sneakers” and see matching product photos, or upload an image and find visually similar ones in your database. We’ll build two things: a small Express backend that talks to the Vecstore API, and a … Devamını oku

Agentic application security company Checkmarx today unveiled Checkmarx One, a platform built for the age of agentic development. The platform embeds agentic, AI-driven security across code, dependencies, AI assets and runtime, which enables enterprises to have oversight and visibility into security right from the start. “Traditional AppSec was never built to deal with AI coding,” … Devamını oku

The world of AI is rapidly shifting from simply asking intelligent systems questions to delegating real work to autonomous AI agents. However, as these agents proliferate, a critical challenge remains: the lack of secure, isolated infrastructure to run them safely within an enterprise environment. This is the problem being tackled by NanoClaw and Docker, whose … Devamını oku

Welcome back to our ongoing GitHub for Beginners series, now in its third season! Our previous episode was the first of the season, and we talked about getting started with GitHub Issues and Projects. This time we’re jumping into another very popular GitHub feature called GitHub Actions. By the end of this post, you’ll know … Devamını oku