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Published: 04 April 2022



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  • アプリケーション・リーダーは、ユーザー・エクスペリエンスの改善に必要となるシステムの信頼性の確保に苦心している。

  • システムは、インテグレーションのポイントやシステム間の依存関係の増加によって複雑化しており、システムが有する影響やその起源が分かりにくくなっている。

  • スケーラブルなシステムには耐障害性が求められるが、それが常に最優先されるわけではないため、障害の発生により期待が満たされなかったり、大掛かりな再構築作業が生じたりする。



  • チームの労力を、ユーザー・ジャーニー、ユーザー・エクスペリエンス、ダウンタイムの原因の理解に集中させることで、システムの信頼性を高めて摩擦を最小限に抑える。

  • チームに時間とリソースを与えて、システムのレジリエンスと信頼性を評価できるよう支援する。これは、カオス・エンジニアリングに事前対応的かつ安全に取り組み、本稼働前の環境でテスト・ファースト主義を取ることによって実現できる。

  • 障害の中心的な原因となっているコンポーネントやシステムを特定し、そのセキュリティ・メカニズムを攻撃してみることで改善点を見つけ、結果的に耐障害性を獲得する。

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Yoshifumi Abe

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