📋 Database Architecture Cheat Sheet

Professional database questions focus on access patterns, migration, availability, performance, operational effort, and cost.

Service Fit

  • Aurora is a managed relational database with high performance and availability options.
  • DynamoDB is serverless NoSQL for key-value and document access patterns.
  • ElastiCache accelerates read-heavy or session workloads with in-memory caching.
  • Redshift supports analytical data warehousing workloads.

Migration Cues

  • Use DMS for database replication and migration.
  • Use SCT for heterogeneous schema conversion.
  • Use Aurora Global Database for low-latency global reads and DR.
  • Use DynamoDB global tables for multi-Region active-active NoSQL workloads.

Practice Databases Questions

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