Guided practice

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  67. Design for Write Scale: A Million Writes a Second

  A live TV vote at a million writes a second: spread by key, buffer in Kafka, aggregate the hot counter in two stages, shed what can wait.

  ClassicMedium

  ShardingDatabasesStreaming

  +6

  Distributed systemsAWSDynamoDBFlinkKafkaScaling writes

  Worked design

  Practice
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  97. Design a Distributed Logging and Error Tracking System

  Ten terabytes of logs an hour from host agents through Kafka into tiered OpenSearch and S3, with regex search, live tail and exceptions grouped into issues.

  ClassicMedium

  StreamingSearchObservability

  +7

  Distributed systemsAWSError trackingFlinkKafkaLoggingOpenSearch

  Worked design

  Practice

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