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Module 5 · Cloud, IaC, Secrets, Cost · Recap
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Spot / preemptible instances
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📝 **Question:** Best workload for 90% savings via spot? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
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📝 **Question:** Best workload for 90% savings via spot? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
A
The Postgres primary — checkpoints flush to disk every 5 min, so a 2-min eviction notice is plenty of warning.
B
Stateless workers — handle reclaim gracefully (already idempotent + checkpointed) for 70-90% savings.
C
Active-active sharded cache — Redis Cluster gossip heals the ring fast enough to absorb spot reclamation cleanly.
D
Stateful single-instance services — the autoscaler reschedules the pod and the volume re-attaches without data loss.
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