Sync: add ec2 optimization notes
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wiki/concepts/EC2-Purchase-Options.md
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wiki/concepts/EC2-Purchase-Options.md
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---
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title: "EC2 Purchase Options"
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type: concept
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tags:
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- AWS
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- EC2
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- Cost-Optimization
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- FinOps
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last_updated: 2026-04-24
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---
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# EC2 Purchase Options
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## Definition
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AWS EC2 提供多种购买选项，允许用户根据工作负载需求和成本优化目标选择最适合的计费方式。
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## Purchase Options
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### 1. On-Demand Instances（按需实例）
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- **特点**：按秒计费，无需承诺，无预付费用
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- **适用场景**：短期、不可预测的工作负载；首次运行应用程序；测试和开发环境
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- **优点**：灵活性最高，无需长期承诺
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- **缺点**：成本最高，无折扣
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### 2. Savings Plans（节约计划）
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- **特点**：1 年或 3 年承诺使用量（以美元计），享受比按需价格低最多 72% 的折扣
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- **类型**：
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- Compute Savings Plans：最灵活，几乎适用于所有 EC2 实例类型
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- EC2 Instance Savings Plans：针对特定实例系列，灵活性较低但折扣更高
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- **适用场景**：可预测的稳定工作负载
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- **优点**：成本可预测，折扣显著
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- **缺点**：需要承诺使用量
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### 3. Spot Instances（竞价实例）
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- **特点**：利用 AWS 闲置容量，价格随供需波动，最高可享受 90% 的按需价格折扣
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- **适用场景**：容错工作负载：批处理、大数据、CI/CD、容器化应用
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- **优点**：成本最低（高达 90% 折扣）
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- **缺点**：实例可被 AWS 中断（2 分钟警告）
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- **最佳实践**：
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- 实现容错机制（自动保存状态）
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- 使用 Spot Fleet 或 Spot Block
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- 与 EKS/ECS 集成实现自动扩展
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### 4. Reserved Instances（预留实例）
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- **特点**：1 年或 3 年承诺，目前已被 Savings Plans 取代
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- **类型**：标准 RI（可修改）、可转换 RI（可更改实例类型）
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- **备注**：新用户推荐使用 Savings Plans
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### 5. Dedicated Hosts（专用主机）
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- **特点**：物理服务器专供单个客户使用，满足合规性要求
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- **适用场景**：有许可证需求、物理服务器隔离要求、BYOL（自带许可证）工作负载
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## Cost Optimization Strategy
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推荐的成本优化策略（来自 [[ctp-topic-13-cloud-finops-policies]]）：
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1. **Right Sizing**：先确定正确的实例大小
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2. **基准负载**：使用 Savings Plans 或 RI 覆盖
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3. **弹性扩展**：使用 Spot 实例处理波动负载
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4. **组合策略**：Savings Plans（基准）+ Spot（弹性）= 最佳成本架构
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## Comparison Table
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| 购买选项 | 折扣 | 灵活性 | 承诺要求 | 适用场景 |
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|---------|------|--------|---------|---------|
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| On-Demand | 0% | 最高 | 无 | 测试/开发/短期 |
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| Savings Plans | 最高 72% | 中等 | 1-3 年 | 稳定工作负载 |
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| Spot Instances | 最高 90% | 低 | 无 | 容错工作负载 |
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| Reserved Instances | 最高 60% | 低 | 1-3 年 | 稳定工作负载（已不推荐）|
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## Related Concepts
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- [[Savings Plans]]：AWS 承诺使用量定价
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- [[Spot Instances]]：竞价型实例
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- [[Graviton]]：ARM 处理器，可与各种购买选项配合使用
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- [[Right Sizing]]：正确选择实例大小
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- [[FinOps]]：云财务管理
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## Sources
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- [[public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2]]
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- [[ctp-topic-13-cloud-finops-policies]]
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- [[public-cloud-learning-sessions-reducing-cloud-costs-20250318-170100-meeting-reco]]
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wiki/concepts/Nitro-System.md
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wiki/concepts/Nitro-System.md
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---
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title: "Nitro System"
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type: concept
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tags:
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- AWS
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- EC2
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- Hardware
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- Performance
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last_updated: 2026-04-24
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---
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# Nitro System
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## Definition
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AWS Nitro System 是 AWS 自研的专用硬件平台，用于增强 EC2 实例的性能和效率。Nitro 通过将网络、存储和安全功能从主 CPU 卸载到专用硬件上来实现这一点。
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## Aliases
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- AWS Nitro
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- Nitro Hypervisor
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## Core Components
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1. **Nitro Card**：专用硬件组件，处理网络、存储和安全功能
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2. **Nitro Hypervisor**：轻量级虚拟机管理程序，几乎不占用 CPU 资源
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3. **Nitro Security Chip**：专用安全芯片，提供硬件级安全保护
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## Key Benefits
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- **性能提升**：通过卸载 I/O 操作释放 CPU 资源用于应用计算
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- **安全性增强**：硬件级信任根和安全启动
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- **网络加速**：支持高达 100 Gbps 的网络吞吐量
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- **存储加速**：支持 NVMe over Fabric 等高速存储协议
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- **更高的性价比**：通过效率提升降低单位计算成本
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## Use Cases
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- 高性能计算 (HPC)
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- 大数据分析
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- 机器学习训练
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- 高网络吞吐量工作负载
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- 低延迟交易系统
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## Related Concepts
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- [[Graviton]]：ARM 架构处理器，可与 Nitro 系统配合使用
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- [[EC2-Instance-Types]]：Nitro 系统支持多种 EC2 实例类型
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- [[EC2-Purchase-Options]]：EC2 购买选项
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## Sources
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- [[public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2]]
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@@ -4,7 +4,7 @@
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- [Overview](overview.md) — living synthesis
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## Sources
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- [2026-04-24] [Public Cloud Learning Sessions - Best practices for EC2 cost optimization in AWS - 20240529](sources/public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2.md) — AWS EC2 成本优化最佳实践：Graviton ARM 处理器 40% 性价比提升、Spot 实例 90% 折扣、Nitro 系统效率优化
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- [2026-04-24] [Public Cloud Learning Sessions - Best practices for EC2 cost optimization in AWS - 20240529](sources/public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2.md)
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- [2026-04-24] [Public Cloud Learning Sessions - Reducing Cloud Costs - 20250318](sources/public-cloud-learning-sessions-reducing-cloud-costs-20250318-170100-meeting-reco.md)
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- [2026-04-24] [CTP Topic 13 Cloud FinOps Micro Focus Policies best practices to optimize the costs](sources/ctp-topic-13-cloud-finops-micro-focus-policies-best-practices-to-optimize-the-co.md)
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- [2026-04-24] [CTP Topic 15 Working with Renovatebot](sources/ctp-topic-15-working-with-renovatebot.md)
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@@ -414,7 +414,6 @@
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- [2026-04-19] [ctp-topic-63-optimise-resource-cost-using-automation](sources/ctp-topic-63-optimise-resource-cost-using-automation.md) — (expected: wiki/sources/ctp-topic-63-optimise-resource-cost-using-automation.md — source missing)
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- [2026-04-19] [public-cloud-learning-sessions-storage-cost-optimization-20240305-160037-meeting](sources/public-cloud-learning-sessions-storage-cost-optimization-20240305-160037-meeting.md) — (expected: wiki/sources/public-cloud-learning-sessions-storage-cost-optimization-20240305-160037-meeting.md — source missing)
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- [2026-04-19] [ctp-topic-71-pcgs-guide-to-rightsizing-why-how-when](sources/ctp-topic-71-pcgs-guide-to-rightsizing-why-how-when.md) — (expected: wiki/sources/ctp-topic-71-pcgs-guide-to-rightsizing-why-how-when.md — source missing)
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- [2026-04-19] [public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2](sources/public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2.md) — (expected: wiki/sources/public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2.md — source missing)
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- [Your-AI-Isn-t-Stupid---It-Just-Needs-a-Better-Harness--Lychee-Technology-Engineering-Blog](sources/Your-AI-Isn-t-Stupid---It-Just-Needs-a-Better-Harness--Lychee-Technology-Engineering-Blog.md) — (expected: wiki/sources/Your-AI-Isn-t-Stupid---It-Just-Needs-a-Better-Harness--Lychee-Technology-Engineering-Blog.md — source missing)
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- [Expose-hermes-agent-as-an-OpenAI-compatible-API-for-any-frontend](sources/Expose-hermes-agent-as-an-OpenAI-compatible-API-for-any-frontend.md) — (expected: wiki/sources/Expose-hermes-agent-as-an-OpenAI-compatible-API-for-any-frontend.md — source missing)
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- [zk-steward](sources/zk-steward.md) — (expected: wiki/sources/zk-steward.md — source missing)
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@@ -910,6 +909,7 @@
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- [Early-Live-Support](concepts/Early-Live-Support.md)
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- [Earnings-Beat-Miss](concepts/Earnings-Beat-Miss.md)
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- [Earnings-Calendar](concepts/Earnings-Calendar.md)
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- [EC2-Purchase-Options](concepts/EC2-Purchase-Options.md)
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- [efibootmgr](concepts/efibootmgr.md)
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- [EFS-vs-EBS](concepts/EFS-vs-EBS.md)
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- [EKS-Auto-Mode](concepts/EKS-Auto-Mode.md)
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@@ -1027,6 +1027,7 @@
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- [Multi-Tenancy](concepts/Multi-Tenancy.md)
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- [nas套件管理](concepts/nas套件管理.md)
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- [NFS网络备份](concepts/NFS网络备份.md)
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- [Nitro-System](concepts/Nitro-System.md)
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- [Normal-Change](concepts/Normal-Change.md)
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- [NVMe硬盘分区](concepts/NVMe硬盘分区.md)
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- [Obsidian-Agent-Client](concepts/Obsidian-Agent-Client.md)
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wiki/log.md
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wiki/log.md
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## [2026-04-24] ingest | Public Cloud Learning Sessions - Best practices for EC2 cost optimization in AWS - 20240529
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- Source file: Cloud & DevOps/Public-Cloud-Learning-Sessions/05_FinOps/public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2.md
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- Status: ✅ 成功摄入
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- Summary: Mike Dukes 和 Steele Taylor（AWS 专家）主讲 EC2 成本优化最佳实践——AWS Nitro 系统外部化网络/存储/安全组件提升效率；Graviton ARM 处理器基于 ARM64 架构，提供 40% 性价比提升，功耗减少 60%；EC2 Spot 实例利用闲置容量提供 90% 折扣；购买选项包括 On-Demand/Savings Plans/Spot Instances；Spot Invaders 游戏展示容错混沌工程实践；Spot + Graviton + 容器组合实现最大化成本节省
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- Concepts created: [[Nitro-System]], [[EC2-Purchase-Options]]
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- Concepts linked: [[Graviton]], [[Spot Instances]], [[Savings Plans]], [[FinOps]], [[Cloud Cost Optimization]]
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- Entities identified: Mike Dukes 和 Steele Taylor 为演讲者，但提及次数不足 2 次，以 wikilink 形式记录于 Source page
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- Source page: wiki/sources/public-cloud-learning-sessions-best-practices-for-ec2-cost-optimization-in-aws-2.md
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- Notes: index.md 已更新（Sources 节新增条目）；overview.md 已补充（FinOps 章节新增段落，置于 ctp-topic-13 后）；Nitro-System 和 EC2-Purchase-Options 不存在于现有 Wiki，新建 Concept 页面；已建立与 public-cloud-learning-sessions-reducing-cloud-costs-20250318-170100-meeting-reco、ctp-topic-13-cloud-finops-policies 的 Connections 关系
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- Conflicts: 与 ctp-topic-14-octane-hub-on-aws 可能的冲突（Graviton 对有状态服务的适用性），已记录于 Source page Contradictions 节
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## [2026-04-25] ingest | Public Cloud Learning Sessions - Reducing Cloud Costs - 20250318
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- Source file: Cloud & DevOps/Public-Cloud-Learning-Sessions/05_FinOps/public-cloud-learning-sessions-reducing-cloud-costs-20250318-170100-meeting-reco.md
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- Status: ✅ 成功摄入
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@@ -36,10 +36,10 @@ date: 2026-04-14
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> "Graviton Free actually uses up to 60% less power consumption than comparable X86-based instances." — Graviton 能效优势
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## Key Concepts
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- [[AWS-Graviton]]：基于 ARM64 的 AWS 自研处理器，提供更高的每瓦性能，支持计算优化型、内存优化型和通用型实例
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- [[EC2-Spot-Instances]]：利用 AWS 闲置容量的竞价型实例，提供高达 90% 的按需价格折扣
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- [[AWS-Nitro-System]]：将网络、存储和安全功能从 CPU 卸载到专用硬件，提升 EC2 实例效率
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- [[Savings-Plans]]：AWS 承诺使用量的定价选项，提供低于按需价格的折扣
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- [[Graviton]]：基于 ARM64 的 AWS 自研处理器，提供更高的每瓦性能，支持计算优化型、内存优化型和通用型实例
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- [[Spot Instances]]：利用 AWS 闲置容量的竞价型实例，提供高达 90% 的按需价格折扣
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- [[Nitro-System]]：将网络、存储和安全功能从 CPU 卸载到专用硬件，提升 EC2 实例效率
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- [[Savings Plans]]：AWS 承诺使用量的定价选项，提供低于按需价格的折扣
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- [[EC2-Purchase-Options]]：On-Demand（按需）、Savings Plans（节约计划）、Spot Instances（竞价实例）三种购买选项
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- [[FinOps]]：云财务管理实践，平衡云成本与业务价值
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