To ensure their Spanner database keeps working reliably, Google engineers use chaos testing to inject faults into production-like instances and stress the system's ability to behave correctly in the face of unexpected failures.
Using fault-tolerant techniques like checksums, data replication, Paxos algorithm, and others is crucial for achieving high reliability, but exercising and validating these techniques through chaos testing is essential.
Over a thousand system tests per week validate Spanner's design by creating production-like instances with various faults injected, including server crashes, file faults, RPC faults, memory/quota faults, and Cloud faults.
[
add
]
[
|
|
...
]