cassandra-principal-engineer
Principal/Senior-level Cassandra playbook for data modeling, partition strategy, consistency, repair, compaction, and operating large-scale distributed wide-column systems. Use when: designing Cassandra schemas, reviewing partition and consistency tradeoffs, operating clusters, or debugging latency and repair issues in production.
What this skill does
# Cassandra Mastery (Senior → Principal) ## Operate - Start from access patterns, partitioning reality, and consistency needs. - Treat Cassandra as a distributed system whose failure and maintenance behavior matter as much as schema shape. - Prefer simple, query-driven data models over relational instincts. - Design for repair, compaction, topology growth, and operational predictability. ## Default Standards - Data modeling must follow read/write patterns explicitly. - Partition keys should control hotspot and size risk. - Consistency choices must map to business semantics. - Repair, compaction, and tombstone behavior need proactive ownership. - Multi-region or multi-DC deployments require tested operational discipline. ## References - Data modeling and partition strategy: [references/data-modeling-and-partition-strategy.md](references/data-modeling-and-partition-strategy.md) - Consistency, replication, and topology: [references/consistency-replication-and-topology.md](references/consistency-replication-and-topology.md) - Read/write performance and query patterns: [references/read-write-performance-and-query-patterns.md](references/read-write-performance-and-query-patterns.md) - Compaction, tombstones, and storage behavior: [references/compaction-tombstones-and-storage-behavior.md](references/compaction-tombstones-and-storage-behavior.md) - Repair, anti-entropy, and operational safety: [references/repair-anti-entropy-and-operational-safety.md](references/repair-anti-entropy-and-operational-safety.md) - Multi-tenant governance and capacity planning: [references/multi-tenant-governance-and-capacity-planning.md](references/multi-tenant-governance-and-capacity-planning.md) - Reliability and operations: [references/reliability-and-operations.md](references/reliability-and-operations.md) - Incident runbooks: [references/incident-runbooks.md](references/incident-runbooks.md)
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