概要
The NoSQL Expert skill equips developers with the specialized mental models required to build high-performance, distributed systems using Apache Cassandra, ScyllaDB, and Amazon DynamoDB. It shifts the design focus from relational entity modeling to query-driven access patterns, ensuring low-latency reads and seamless horizontal scalability. By providing implementation patterns for single-table design and partition key optimization, this skill helps developers avoid costly pitfalls such as hot partitions, expensive scatter-gather scans, and inefficient data distribution in production-grade distributed environments.