Designs

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  50. Design a Ride-Sharing Service like Uber

  Price a trip, match a rider to a nearby driver who has ten seconds to accept, and never give one driver two rides.

  ClassicMedium

  CachingDatabasesAWS

  +6

  GeospatialMatchingRedisRide sharingStep functionsWebSockets

  Worked design

  Practice
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  65. Design Multi-Step Processes: Sagas, Orchestration and Durable Workflows

  An order checkout across payment, inventory and shipping, run as a saga.

  ClassicMedium

  AWSIdempotencySagas

  +2

  Step functionsWorkflows

  Worked design

  Practice

Each design brings together the brief, practice, examples and discussion.