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High-signal articles on system design, algorithms, career strategy, and engineering craft. Written by engineers who've been there.
Learn how to explain sharded counters in a system design interview — what the interviewer is really testing, how to walk through the solution, and where most candidates go wrong.
Learn how to design a blob storage system like S3 in interviews — covering partitioning, metadata separation, replication, and the 10 mistakes that cost candidates the offer.