Guided practice

Company tags are community-reported. Counts on cards show how many people reported that design.

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  49. Design an Online Auction like eBay

  Take bids on 10 million live auctions with one consistent highest bid, lose none, push the price to every watcher and end each auction fairly.

  ClassicMedium

  StreamingConcurrencyDistributed systems

  +7

  AuctionsAuroraAWSContentionKafkaReal timeServer sent events

  Worked design

  Practice
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  64. Design for Contention: Thousands Racing for the Same Item

  Design for contention through a limited sneaker drop: row locks, conditional writes, expiring holds, fencing tokens, sagas and one writer per item.

  ClassicMedium

  ConcurrencyAWSContention

  +3

  Flash saleLockingSagas

  Worked design

  Practice

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