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wiki/entities/Amazon-ElastiCache.md
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title: "Amazon ElastiCache"
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type: entity
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tags: [AWS, Database, In-Memory, Cache]
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date: 2026-04-18
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---
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## Definition
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Amazon ElastiCache 是 AWS 提供的全托管内存数据库服务,支持 Redis 和 Memcached,用于缓存、实时分析等场景。
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## Key Characteristics
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- 引擎:Redis、Memcached
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- 类型:内存数据库/缓存
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- 延迟:微秒级
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- 复制:自动主从复制
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## Use Cases
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- 缓存常用数据
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- 会话存储
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- 实时分析
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- 游戏排行榜
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## Sources
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- [[ctp-topic-51-architecting-with-aws-purpose-built-databases]]
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## Case Studies
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- Duolingo:使用 ElastiCache 缓存常见词汇和短语
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- Peloton:使用 ElastiCache Redis 为客户提供即时反馈
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