HARDML System Design
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Implement a trie-based tokenizer
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xAI Interview Questions
28
HARDCoding & Algorithms
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Maximize distinct values after unique ± offsets
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MEDIUMSoftware Engineering Fundamentals
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What are processes vs threads?
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EASYSystem Design
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Design a multi-level API rate limiter
Rate Limiting AlgorithmsDistributed Systems Consistency ModelsDistributed Caching and Key-Value StoresAPI Gateway / Reverse Proxy Architecture
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MEDIUMCoding & Algorithms
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Design O(1) random-sampling set
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HARDSystem Design
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Design a follower push-notification system
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MEDIUMSystem Design
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Explain ACID and transactions
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MEDIUMML System Design
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Design agentic workflow to generate a 1-hour movie
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HARDCoding & Algorithms
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Find kth element and sliding-window kth in stream
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MEDIUMSoftware Engineering Fundamentals
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MEDIUMSystem Design
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MEDIUMSystem Design
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Server-Authoritative Game StateIdempotency and Concurrency ControlReal-time Communication ProtocolsDatabase Consistency Models
MEDIUMSoftware Engineering Fundamentals
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HARDMachine Learning
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HARDSystem Design
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MEDIUMSystem Design
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