Multi Region and Multi Cloud Resilience Questions
Designing systems that work across multiple geographic regions or cloud providers. This addresses the highest reliability requirements and provides protection against provider-level failures. At senior level, understand data replication across regions, latency implications, consistency trade-offs, and cost of multi-region deployments. Design routing policies that direct traffic to healthy regions. Address compliance requirements that may mandate geographic distribution.
HardSystem Design
0 practiced
Design a low-overhead, global tracing and observability architecture that preserves trace context across clouds and regions. Address sampling strategy, propagation of trace IDs, storage, access controls, and how to provide end-to-end traces without overwhelming cross-region egress or violating privacy rules.
HardTechnical
0 practiced
You operate a global application across clouds and encounter a provider-wide networking degradation that causes increased latency to one region. Traffic to that region must be reduced without causing cascading overload elsewhere. Outline an automated throttling and traffic-shift strategy, including metrics to trigger action and how to avoid overloading remaining healthy regions.
MediumTechnical
0 practiced
Compare multi-master distributed databases (e.g., CockroachDB, Spanner) versus active-passive primary/replica setups across regions. Evaluate consistency, write latency, conflict resolution, operational complexity, and suitability for multi-cloud deployments.
HardSystem Design
0 practiced
Architect an active-active, multi-cloud global rate-limiting design that enforces per-user quotas consistently without a single central state. Describe the algorithms (token bucket, leaky bucket, approximate counters, CRDT counters), storage choices, and how you handle latency vs strictness trade-offs.
MediumTechnical
0 practiced
You manage cross-cloud identities for service accounts used by microservices in different regions. Design an identity federation approach, including short-lived credentials, roles mapping, and least-privilege policies to reduce blast radius if credentials are compromised.
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