Understand Vitess routing and sharding before applying MySQL-compatible design or migration advice.
Editorial review checked 2026-10-29 against this instruction snapshot. Supporting scripts and runtime behavior remain outside this editorial review.
The source covers keyspaces, VSchema, query routing and PlanetScale-related operational patterns. It is useful when SQL compatibility obscures the distributed execution model and a query that looks ordinary actually crosses shards or depends on unsupported behavior.
Teams maintaining a Vitess-backed service or investigating sharded MySQL behavior.
MySQL compatibility does not guarantee identical transaction, schema-change or routing semantics. A VSchema change can redirect application traffic, and broad queries may become expensive through fanout even when each shard is healthy.
Unknown; inspect source requirements and supporting scripts.
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Inspect the pinned source snapshot and its supporting files first. The command selects this skill through the open-source skills CLI. Node.js and agent-specific setup may be required. Installation can download code. Catalog ingestion never executes skill instructions or install scripts.
npx skills add https://github.com/planetscale/database-skills/tree/f6ed002d03084cb39c01d1d58904d47a36f5322a/skills/vitess --skill vitessReview pinned skill folder ↗ · CLI documentation ↗
After source review, use npx skills check and npx skills update to inspect and apply upstream updates. Re-check changed instructions before running them.
Static review only. This is not a security audit or a guarantee of safety.
SKILL.md text only; scripts, dependencies and runtime behavior not audited.
Allowed tools declaration: Unknown. Runtime permissions and network behavior: Unknown.
A temporary folder-copy check, not an agent installation or runtime safety verdict.
6 files copied and checksummed from this exact source snapshot. No package code or installation scripts were executed.
Inventory SHA-256: ab93bbbf1471ff0dde8abca8b4b9558ae785279f06e274c6e6dbbdaa33f9e6d7
86/100 · Metadata coverage 100% · Model 1.0
Scores summarize observable discovery signals. Popularity and repository activity apply to the whole repository. Unknown runtime safety earns no certification.
Identify keyspaces and existing routing rules, inspect representative queries and map access patterns to shard boundaries. Review schema or VSchema changes with the platform’s supported migration tooling rather than treating them as isolated local SQL edits.
Check routing and results for normal and skewed keys, inspect fanout and test relevant transaction boundaries. Verify the deployed migration state and application behavior, and retain a clear rollback strategy for any change to how existing data is addressed.
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