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Data World 3 · Streams in Motion · Stage 6

Queue It

Refunds wait in a queue: let the worker read it, set the bad one aside, pay each once, keep up.

  • Visibility timeout
  • Dead-letter queues
  • Partial batch responses
  • Lambda concurrency
Domain
Data engineering
World
Data World 3: Streams in Motion (Associate)
Game type
Stream clock: Key and size a stream, then play every second of its peak.
Time
About 30 minutes on a first attempt (estimated)
Exam guides
  • SAA-C03Task 2.1: Design scalable and loosely coupled architectures
  • DEA-C01Skill 1.4.2: Configure Lambda functions to meet concurrency and performance needs; Skill 1.3.2: Build data pipelines for performance, availability, scalability, resiliency, and fault tolerance; Skill 3.1.8: Use AWS Lambda to automate data processing
  • DVA-C02Skill 1.1.8: Write code to use messaging services; Skill 1.2.3: Handle the event lifecycle and errors by using code (for example, Lambda Destinations, dead-letter queues)