ingest: Public Cloud Learning Sessions - EC2 Cost Optimization AWS (2024-05-29)

Source: Cloud & DevOps/Public-Cloud-Learning-Sessions/05_FinOps/public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2.md

Entities: Mike-Dukes, Steele-Taylor, Spot-Invaders
Concepts: AWS-Nitro, EC2-Spot-Instances, ECS
Concepts updated: Graviton, SpotInstances (added source reference)

wiki/concepts/SpotInstances.md

@@ -0,0 +1,40 @@
+---
+title: "Spot Instances"
+type: concept
+tags:
+  - AWS
+  - Cost-Optimization
+  - FinOps
+aliases:
+  - Spot Instances
+  - Spot
+  - 竞价实例
+last_updated: 2026-05-12
+---
+
+## Overview
+
+Spot Instances（竞价实例）是 AWS 提供的按需计算容量，价格基于供需动态调整，可比 On-Demand 价格低 60-90%。适用于容错、可中断的工作负载。
+
+## Use Cases
+
+- 批处理作业
+- CI/CD 构建
+- 大数据分析
+- 机器学习训练
+- 容器化工作负载（配合 Spot Instance Interruption Handling）
+
+## Best Practices
+
+- 实现优雅关闭处理（Graceful Shutdown）
+- 使用 Spot Fleet 或 Spot Block（固定时间段）
+- 结合 Auto Scaling Groups 实现弹性
+- 与 On-Demand 或 Reserved Instances 配合用于核心工作负载
+
+## Related Pages
+
+- [[FinOps]]
+- [[Graviton]]
+- [[public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2]]：Mike Dukes 和 Steele Taylor 详解 Spot 最佳实践（含 Spot Invaders 案例）
+- [[ctp-topic-13-cloud-finops-micro-focus-policies-best-practices-to-optimize-the-co]]
+- [[ctp-topic-63-optimise-resource-cost-using-automation]]