Why DynamoSearch

DynamoSearch is a full-text search library for Amazon DynamoDB that enables powerful search capabilities on your DynamoDB tables. It processes DynamoDB Streams to build and maintain a search index, implementing the BM25 scoring algorithm for relevance ranking.

The Problems

DynamoDB is an excellent NoSQL database, but it lacks built-in full-text search capabilities. While you could use Amazon OpenSearch Service or Elasticsearch, these add significant cost and operational complexity to your infrastructure.

DynamoSearch solves this by:

• Using only DynamoDB: No additional services required
• Stream-based updates: Automatically indexes changes via DynamoDB Streams
• BM25 ranking: Industry-standard relevance scoring, also used by Elasticsearch
• Flexible text analysis: Pluggable analyzers for different languages and use cases
• Cost-effective: Pay only for DynamoDB operations