By injecting faults into production-like Spanner instances with chaos testing, the reliability team helps prevent bugs from making it into production.

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Spanner employs chaos testing to improve reliability by injecting faults into production-like instances. The use of fault-tolerant design helps mask failures of components. Various types of faults are injected during chaos testing, including server crashes, file faults, RPC faults, memory/quota faults, cloud faults, and regional outages.

Chaos testing Spanner improves reiliability

Spanner earns its reputation for reliability