Individual skill
nosql-expert
Expert guidance for distributed NoSQL databases (Cassandra, DynamoDB). Focuses on mental models, query-first modeling, single-table design, and avoiding hot partitions in high-scale systems.
skills-imported/nosql-expert/SKILL.md
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# NoSQL Expert Patterns (Cassandra & DynamoDB)
## Overview
This skill provides professional mental models and design patterns for **distributed wide-column and key-value stores** (specifically Apache Cassandra and Amazon DynamoDB).
Unlike SQL (where you model data entities), or document stores (like MongoDB), these distributed systems require you to **model your queries first**.
## When to Use
- **Designing for Scale**: Moving beyond simple single-node databases to distributed clusters.
- **Technology Selection**: Evaluating or using **Cassandra**, **ScyllaDB**, or **DynamoDB**.
- **Performance Tuning**: Troubleshooting "hot partitions" or high latency in existing NoSQL systems.
- **Microservices**: Implementing "database-per-service" patterns where highly optimized reads are required.