https://peter-notes.com/tags/debug/Recent content in Debug on Peter.H's Full-Stack GAMEhttps://peter-notes.com/images/og-image.jpghttps://peter-notes.com/images/og-image.jpgHugozh-twFri, 15 May 2026 00:00:00 +0000https://peter-notes.com/posts/llm-driven-e2e-surfaces-backend-regression/Fri, 15 May 2026 00:00:00 +0000https://peter-notes.com/posts/llm-driven-e2e-surfaces-backend-regression/用 Playwright MCP 讓 LLM 驅動瀏覽器跑 STG 驗收，原本目標是確認 frontend 修補有效，卻意外揭發 backend dual-write lifecycle hook 失效的 regression。POST 200 不等於資料寫對：探討為什麼 bot 會多走那一步、人手 UAT 為什麼通常碰不到、以及如何把這個習慣寫進 verification recipe。https://peter-notes.com/posts/orm-silent-populate-failure/Fri, 24 Apr 2026 00:00:00 +0000https://peter-notes.com/posts/orm-silent-populate-failure/一個 CMS 文件的「上傳者」欄位永遠空白引出的除錯故事：當 ORM 的 populate / include 在特定條件組合下靜默失敗，HTTP 200 OK、其他欄位都對，唯獨關聯變成 null。介紹這類跨 ORM 的通病怎麼診斷、怎麼繞過、怎麼從架構分層理解為什麼只有這一層會騙人。https://peter-notes.com/posts/strapi-v5-populate-silent-failure-with-relation-filters/Fri, 24 Apr 2026 00:00:00 +0000https://peter-notes.com/posts/strapi-v5-populate-silent-failure-with-relation-filters/A reproducible Strapi v5 bug: combining filters[relation][id][$eq] with populate[relation]=true silently returns null for the populated field — no error, no warning, just missing data. This post walks through the symptom, a curl reproduction, why it happens at the ORM layer, and a knex-based custom find controller that fixes it.https://peter-notes.com/posts/strapi-forgot-password-anti-enumeration/Tue, 21 Apr 2026 00:00:00 +0000https://peter-notes.com/posts/strapi-forgot-password-anti-enumeration/從一次 kubectl 排查出發，解析為何 Strapi 忘記密碼 API 對不存在的 email 仍回 200，並深入釣魚工具（Gophish、Evilginx2）與撞庫工具（OpenBullet）的運作與經濟模型，說明 App 文案為何必須配合後端的 anti-enumeration 設計。https://peter-notes.com/posts/admin-panel-permission-drift-cms-backends/Fri, 17 Apr 2026 00:00:00 +0000https://peter-notes.com/posts/admin-panel-permission-drift-cms-backends/從一個 Flutter 切不回手機頭貼的 bug 出發，揭開 Strapi Admin Panel 權限漂移這個跨後端的共通陷阱。深入分析雙層根因、衍生的 null validation bug，以及為什麼 Firebase、Supabase、Hasura、AWS IAM 都逃不過這個問題。https://peter-notes.com/posts/flutter-getx-account-switch-state-trap/Thu, 16 Apr 2026 00:00:00 +0000https://peter-notes.com/posts/flutter-getx-account-switch-state-trap/實作 Flutter 子母帳號切換功能時，連環踩了四個 GetX 狀態管理的坑：身份憑證不同步、ViewModel 生命週期錯亂、全域變數過期參考、記憶體狀態未持久化。逐一分析根因與修復思路。https://peter-notes.com/posts/docker-buildkit-cache-mount-stale-build/Wed, 18 Feb 2026 00:00:00 +0000https://peter-notes.com/posts/docker-buildkit-cache-mount-stale-build/深入分析 Docker BuildKit 的 --mount=type=cache 如何在 CI/CD 中導致部署了舊版程式碼，以及為什麼 --no-cache 旗標無法解決這個問題。從四次失敗部署中拆解 Docker 快取的三層機制。https://peter-notes.com/posts/flutter-ios-cold-start-crash-debug-mode/Tue, 17 Feb 2026 00:00:00 +0000https://peter-notes.com/posts/flutter-ios-cold-start-crash-debug-mode/深入分析 Flutter iOS App 從主畫面啟動時閃退的根本原因：iOS 14+ 的 ptrace 安全限制導致 Debug 模式無法獨立運行，以及如何正確診斷和解決這個問題。https://peter-notes.com/posts/jenkins-workspace-stale-code-debugging/Thu, 12 Feb 2026 00:00:00 +0000https://peter-notes.com/posts/jenkins-workspace-stale-code-debugging/深入分析 Jenkins Pipeline 中因缺少 checkout scm 導致 workspace 未同步到 git tag commit，造成新功能部署後消失的問題。從 Kubernetes Pod 內檢查實際檔案、比對 Git tag 內容，到發現 Jenkins workspace 持久化機制的隱形陷阱，完整記錄除錯過程、根因分析與三項防範措施https://peter-notes.com/posts/strapi-v5-auth-refresh-route-pitfall/Fri, 06 Feb 2026 00:00:00 +0000https://peter-notes.com/posts/strapi-v5-auth-refresh-route-pitfall/深入剖析 Strapi v5.31+ 將 /auth/refresh 改為內建路由後，導致 JWT 過期呼叫 refresh 回傳 403 的根因與修復方式。一個版本升級隱含的行為變更，如何讓除錯方向完全走偏。https://peter-notes.com/posts/strapi-plugin-factory-wrapper/Thu, 15 Jan 2026 00:00:00 +0000https://peter-notes.com/posts/strapi-plugin-factory-wrapper/深入解析 Strapi v5 plugin 架構中的 factory function 陷阱，以及如何使用 Factory Wrapper 模式正確覆寫 users-permissions plugin 的 service 和 controllerhttps://peter-notes.com/posts/flutter-vs-vue-debugging-complexity/Sun, 04 Jan 2026 00:00:00 +0000https://peter-notes.com/posts/flutter-vs-vue-debugging-complexity/同樣是「關於我們」頁面的顯示邏輯，Vue 改了十幾個 commit 都很順利，Flutter 卻卡了很久。本文從 Debug 實戰出發，延伸到 Domain Model 的防禦能力、Clean Architecture 的責任邊界、扁平架構的取捨、BFF 的可靠性價值，最後探討交接代碼的信任陷阱。https://peter-notes.com/posts/flutter-banner-401-invalid-token-debugging/Tue, 30 Dec 2025 00:00:00 +0000https://peter-notes.com/posts/flutter-banner-401-invalid-token-debugging/深入剖析 Flutter App 首頁 Banner 無法顯示的問題，從 git commit 追蹤到 GraphQL 認證機制，揭開「帶無效憑證比不帶憑證更糟糕」的技術真相https://peter-notes.com/posts/2025-12-21-jenkins-flutter-cicd-debugging-journey/Sun, 21 Dec 2025 00:00:00 +0000https://peter-notes.com/posts/2025-12-21-jenkins-flutter-cicd-debugging-journey/從 bundle exec 版本不一致、Bundler 權限錯誤、Discord Webhook 實作、CocoaPods 路徑問題、Build Number SSOT 架構、Ruby 版本相容性，到最終的 git describe 隨機行為——完整記錄 15 個 commits 的除錯歷程。https://peter-notes.com/posts/2025-12-20-claude-code-token-optimization-skills/Sat, 20 Dec 2025 00:00:00 +0000https://peter-notes.com/posts/2025-12-20-claude-code-token-optimization-skills/從 Claude Code Pro Plan 升級到 Max Plan 還是 token 不夠用？本文分享如何透過使用正確的 Skill 來大幅降低 token 消耗，讓 AI 輔助開發更有效率。https://peter-notes.com/posts/postgresql-sequence-disaster/Sun, 09 Nov 2025 00:00:00 +0000https://peter-notes.com/posts/postgresql-sequence-disaster/記錄一次生產環境中因錯誤部署導致的 PostgreSQL Sequence 不同步問題，包含完整的問題分析、修復過程和預防措施https://peter-notes.com/posts/api-related-notes/Wed, 15 May 2024 00:00:00 +0000https://peter-notes.com/posts/api-related-notes/深入探討 API 回應中不可見的 BOM 字元如何導致 JSON 解析失敗，以及如何診斷和解決這個隱藏的問題。完整的 Swift 解決方案與預防措施。