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+---
+title: "Duolingo"
+type: entity
+tags: [company, AWS, case-study]
+date: 2026-04-18
+---
+
+## Profile
+- 角色：案例公司，多语言学习平台
+- 用例：使用 DynamoDB 存储个性化数据，ElastiCache 缓存常见词汇/短语，Aurora 处理事务数据
+
+## Sources
+- [[ctp-topic-51-architecting-with-aws-purpose-built-databases]] — AWS 专用数据库架构
+
+## Aliases
+- Duolingo