Category
AWS ECS on Fargate 本番運用ガイド（タスク設計／ネットワーキング／CI・Blue/Green／オートスケール／コスト最適化／トラブルシュート／技術選定）
ECS on Fargateは『サーバー管理という最大のコスト（人件費）を消し、本番品質そのものに集中する』ためのサーバーレス・コンテナ基盤です。本クラスタは、ECS on Fargateを採用した後の『どう本番で作るか』に集中します——CPU/メモリの固定ペアと分離境界を踏まえたタスク設計、awsvpc・ALB(target type=ip)・Service Connect・VPCエンドポイントのネットワーク設計、ローリング更新＋サーキットブレーカーによる自動ロールバックとネイティブBlue/Green（bake time）・CodeDeploy・GitHub Actions(OIDC)の安全な出荷、Application Auto Scalingのターゲット追跡とSQSバックログ・パー・タスクによるワーカーのスケール、料金モデルの理解からGraviton・Fargate Spot・Compute Savings Plansへ至るコスト最適化、停止理由コード別のトラブルシュート、そしてLambda/App Runnerとの技術選定まで——可観測性・回復性・冪等性・グレースフルシャットダウン・セキュリティ・コスト効率を軸に体系化します。木材流通B2B SaaS（API Gateway→NLB→ALB→ECSで221エンドポイント）と本番二重課金0件の決済基盤をFargateで運用した知見を根拠に、AWS公式ドキュメントに忠実な実コードで解説します。ECSかEKSかの技術選定そのものは『インフラ・IaC・CI/CD』クラスタの『ECS vs EKS』を参照してください。
7 articles in total
Foundational guide
Foundational guide (start here)
AWS ECS on Fargate Production Operation Guide: Designing, Deploying, Costing, and Securing Serverless Containers in Real Code
An ECS on Fargate production operation guide faithful to the AWS official documentation. Systematizes, with Terraform, task-definition JSON, and real code: task-size design (the CPU/memory table), awsvpc networking, rolling updates + deployment circuit breaker, graceful shutdown via SIGTERM, separation of the execution role and the task role, and Fargate Spot and cost optimization.
Related practical articles
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ECS on Fargate Auto Scaling Complete Guide: Designing Target Tracking, Step, and the SQS Backlog Pattern at Production Quality
Systematizing ECS on Fargate auto scaling. From choosing among target tracking, step, and scheduled, to the custom-metric implementation of worker scaling via SQS backlog-per-task — explained with Terraform and real code.
15 min read - AWSECSFargateCI/CDBlue/Green
ECS on Fargate CI/CD Complete Guide: Shipping Safely with Native Blue/Green, CodeDeploy, and GitHub Actions (OIDC)
Organize ECS Fargate's three deployment strategies (rolling, ECS-native Blue/Green, CodeDeploy) and show a keyless GitHub Actions OIDC pipeline in real code. End-to-end through the production-shipping quality gates.
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ECS on Fargate Cost-Optimization Complete Guide: From Understanding the Pricing Model to Graviton, Fargate Spot, and Savings Plans
A FinOps practical guide that accurately decomposes the ECS on Fargate pricing model and applies right-sizing, ARM64 (Graviton), Fargate Spot, and Compute Savings Plans in the order they work. With Terraform.
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ECS on Fargate Networking Design Complete Guide: Building awsvpc, ALB/NLB, Service Connect, and VPC Endpoints at Production Quality
Systematizing ECS Fargate networking design in real Terraform code, from the essence of awsvpc through ALB/NLB connection, security-group chaining, VPC-endpoint isolation, to service-to-service communication with Service Connect.
18 min read - AWSECSFargateトラブルシューティング可観測性
ECS on Fargate Troubleshooting Complete Guide: Diagnosing and Fixing Why Tasks Won't Start or Die Immediately, by Stop-Reason Code
A practical guide to systematically diagnosing and fixing ECS Fargate task stop reasons (CannotPullContainerError, OutOfMemory, health-check failure, etc.) by stop code, from how to read describe-tasks.
17 min read - AWSECSFargateLambdaApp Runner
AWS Fargate vs Lambda vs App Runner: a tech-selection guide for container backends (2026 edition)
A practical comparison of AWS Fargate (ECS), Lambda, and App Runner. A tech-selection guide that organizes the launch model, protocols, scaling, cost, and operational burden, and prevents selection mistakes with per-use-case instant answers and a text-format decision tree.
15 min read