RESTful API Design and HTTP Fundamentals Questions
Understanding REST architectural principles including resource-based URLs, proper HTTP methods (GET for safe retrieval, POST for creation, PUT for updates, DELETE for deletion), appropriate status codes (200 OK, 201 Created, 400 Bad Request, 404 Not Found, 500 Internal Server Error), and stateless communication patterns. Ability to design simple API endpoints following REST conventions.
MediumSystem Design
0 practiced
Design a reliable webhook delivery system where your service must POST events to third-party endpoints. Describe the queueing, retry/backoff strategy, idempotency handling, batching options, monitoring, and how you'd prevent failing webhooks from consuming excessive resources or affecting your API availability.
MediumSystem Design
0 practiced
Design a distributed rate-limiter for REST APIs that supports per-user, per-API-key, and global limits with burst allowance (token-bucket semantics). Discuss enforcement points (gateway vs service), state storage options, cross-region synchronization, and trade-offs between correctness and latency for SREs.
EasyTechnical
0 practiced
Define the key REST constraints (statelessness, uniform interface, client-server separation, layered system, cacheable, code on demand optional) and explain why statelessness specifically matters for horizontal scaling, failover, and SRE tasks such as load balancing or rolling updates. Provide concrete examples of stateful pitfalls and stateless alternatives.
HardTechnical
0 practiced
Explain HTTP/2 and HTTP/3 features (multiplexing, header compression, connection coalescing, QUIC transport) that affect REST API performance and reliability. From an SRE perspective, what changes to monitoring, load-balancing, and CDN strategies would you consider when migrating from HTTP/1.1 to HTTP/2 or HTTP/3?
MediumTechnical
0 practiced
List HTTP security patterns appropriate for REST APIs (e.g., Authorization: Bearer tokens, mutual TLS, HMAC signatures), and explain where to enforce them (gateway vs service). As an SRE, describe how you would roll credentials or certificates with zero downtime and monitor for suspicious authentication failures.
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