Building a scalable user search layer on top of Amazon Cognito
Build a scalable Cognito user search layer using AWS Lambda, DynamoDB, and OpenSearch Serverless to support fuzzy matching, multi-attribute filtering, and sub-second response times for enterprise-grade user management.
入选理由:使用 Cognito Lambda 触发器(Post-confirmation + Pre-token generation)实时同步用户数据至 DynamoDB,确保索引与身份池一致。

