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chime

19 interview questions available

Explain sync/async, Go concurrency, SQL vs NoSQL

Design load balancing, caching, and idempotent APIs

Compute early signals for user retention

Write SQL for noisy A/B launch metrics

Design an A/B launch amid marketing confounds

Decide launch with CPA-profit trade-offs by segment

Write rolling-window SQL over weekly cohorts

Implement single-tab browser history navigation

Design multi-tab browser history and trade-offs

Compute minimum time with task cooldowns