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Java architecture reference - frameworks, design patterns, enterprise architecture, and production best practices for Java 17/21/23-24 (2024-2025). Use when making architectural decisions, reviewing Java code, or selecting libraries.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Testing strategy, patterns, and coverage optimization for quality assurance. Use this skill whenever the task involves deciding what to test, how to structure tests, what coverage to aim for, when to use mocks vs real dependencies, or how to write tests that actually catch bugs (not just pass). Also use when the user asks about test pyramids, flaky tests, integration vs unit, TDD, or improving an existing test suite.
Production readiness validation — runs all checks before merging or deploying. Use this skill whenever the task involves verifying that code is ready to ship: type checking, linting, tests passing, coverage thresholds, dead code, security issues, or any pre-merge checklist. Also use when the user asks "is this ready?", wants a pre-PR review, or needs to confirm nothing is broken after a refactor.
Swift architecture reference — SwiftUI, UIKit, Combine, async/await, actors, and production best practices for Swift 5.9/6.0 (2024-2025). Use when making architectural decisions, reviewing Swift code, or selecting libraries. Also use when the user mentions iOS development, macOS apps, or Apple platform development.
UI/Frontend architecture reference - React 19, Next.js 15, Vue 3, Svelte 5, Angular 19, CSS modern features, component libraries, state management, and production best practices for 2024-2025. Use when building frontend UIs, selecting frameworks, reviewing component code, or making frontend architecture decisions.
UX design reference - research methods, design systems, accessibility (WCAG 2.2, EAA), UX laws, AI-driven workflows, tools (Figma, Penpot), and production best practices for 2024-2025. Use when making UX decisions, reviewing designs, implementing accessibility, selecting design tools, or applying UX principles.
C# architecture reference - frameworks, design patterns, ASP.NET Core, Entity Framework, Blazor, Unity, and production best practices for C# 12/13 and .NET 8/9 (2024-2025). Use when making architectural decisions, reviewing C# code, or selecting libraries.
| name | java-patterns |
| description | Java architecture reference - frameworks, design patterns, enterprise architecture, and production best practices for Java 17/21/23-24 (2024-2025). Use when making architectural decisions, reviewing Java code, or selecting libraries. |
| user-invocable | true |
| argument-hint | [frameworks|patterns|architecture|practices|features|all] |
Comprehensive reference for Java architectural decisions. Use $ARGUMENTS to focus on a specific area, or browse all sections.
| Company | Result |
|---|---|
| Netflix | Microservices backbone, Spring-based platform serving 260M+ subscribers |
| Uber | Backend services handling millions of trips/day, custom Java frameworks |
| Apache Kafka (written in Java/Scala), processes trillions of messages/day | |
| Amazon | AWS SDK for Java, core services, Lambda runtime |
| Goldman Sachs | Low-latency trading systems, Eclipse Collections contributor |
| Airbnb | Backend services, migrated key services from Ruby to Java |
| Twitter/X | JVM-based infrastructure serving 500M+ tweets/day |
| Version | Key Features |
|---|---|
| Java 17 (LTS) | Records, Sealed Classes, Pattern Matching instanceof, Text Blocks, Switch Expressions |
| Java 21 (LTS) | Virtual Threads, Pattern Matching Switch, Record Patterns, Sequenced Collections |
| Java 22 | Unnamed Variables (_), Statements before super() (preview) |
| Java 23 | Primitive types in Patterns (preview), Markdown doc comments, Module imports (preview) |
| Java 24 | Structured Concurrency (preview), Scoped Values (preview), Stream Gatherers (preview) |
LTS releases (17, 21) are production defaults. Non-LTS (22, 23, 24) for early adoption of preview features.
