Values are comparable only within the scope shown. Runtime, plan, model, invocation mode, and account-specific capacity can change the effective result.
Quick comparison
| Criterion | Redis | MySQL | Comparability note |
|---|---|---|---|
| Default client connections | Redis10,000 defaultRedis 2.6+Redis | MySQL151 default; configurable 1–100,000MySQL 8.4 serverOracle | Defaults are configuration starting points, not safe production targets. |
| Single stored unit | Redis512 MBRedis defaultRedis | MySQL65,535 bytesMySQL 8.4Oracle | A Redis string and a MySQL inline row are different data models and operational costs. |
Which is best for your requirement?
Choose Redis when
Its documented default client connections scope fits your measured workload and the caveats shown in the comparison.
Choose MySQL when
Its documented execution or account model better matches the exact requirement rather than a vendor-wide headline.
Validate before migration
Test payload, duration, throughput, concurrency, failure behavior, billing scope, and recovery with representative traffic.
Validate the decision with your workload
Before choosing between Redis and MySQL, reproduce the comparison with the exact plans, models, regions, runtimes, and invocation paths you intend to operate. The reviewed rows cover default client connections and single stored unit; they do not turn different pricing, reliability, developer experience, or ecosystem tradeoffs into one universal score.
- Capture representative request sizes, token usage, duration, concurrency, storage, and failure behavior at realistic percentiles.
- Test the boundary and the recovery path on both candidates, including throttling, timeouts, partial failure, retries, and cost controls.
- Record which scoped observation drove the choice and recheck its official source before migration or a major traffic increase.
Official sources
Related