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Turn the path into reviewable evidence with its scoped project milestones and explicit grading criteria.
Implement a rate-limiting service (any language): a token-bucket and/or sliding-window algorithm, per-key limits enforced in shared state (Redis) so...
Build and run a URL shortener that survives a replica dying: a stateless API behind a load balancer (2+ replicas via compose), a database for the...
Build a producer → queue → worker pipeline (BullMQ/SQS/Kafka or similar) that fails honestly: at-least-once delivery, idempotent consumers proven safe...