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7.2NoSQL Database Types
| Database | Type | Primary Use | QA Testing Focus |
|---|---|---|---|
| MongoDB | Document | Flexible schemas, content management, catalogs | Schema validation, indexing, aggregation pipelines |
| Redis | Key-Value / Cache | Caching, sessions, rate limiting, queues | TTL expiration, cache invalidation, eviction policies |
| DynamoDB | Key-Value / Document | Serverless, high-scale, AWS-native | Capacity limits, query vs scan, GSI consistency |
| Elasticsearch | Search engine | Full-text search, log aggregation | Index mapping, query accuracy, relevance scoring |
| Cassandra | Wide-column | Time-series, high-write workloads | Consistency levels, partition sizing |