Resilient stateful batch on Spot Instances
WHAT IT TESTS: fault tolerance on interruptible compute. OUTLINE: externalize state and checkpoint to durable storage, react to interruption and rebalance notices to drain gracefully, diversify instance pools.
WHAT IT TESTS: whether you can make interruptible compute safe for stateful work. ANSWER OUTLINE: decouple state from the instance by checkpointing progress to durable storage like S3 or a database so a new instance resumes, not restarts; consume the two-minute interruption notice and rebalance recommendation to checkpoint and drain gracefully; diversify across many instance types and AZs and mix in On-Demand for the baseline; make work idempotent so reprocessing a chunk is safe.
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- #cloud
- #spot-instances
- #fault-tolerance
- #batch-processing
- #checkpointing
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