Medium-HardEvaluateBack-of-Envelope EstimationMultiple Choice
Uber has 5M active drivers sending GPS every 4 seconds. Which technology is most appropriate as a write buffer before the location store?
Evaluate — Tests ability to make judgments and justify decisions.
Answer Options
APostgreSQL with a write-ahead log
BA message queue like Kafka to buffer 1.25M writes/sec
CA single Redis instance
DAn HTTP load balancer
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