4Optimization

• 4.1Query optimization and indexing

  Understand index tuning, calculating/retrieving query RU cost, the integrated cache, read-heavy vs write-heavy index strategy, composite indexes, and custom indexing policies.

• 4.2Working with the change feed

  Understand processing the change feed (Azure Functions trigger, SDK change feed processor), the change feed estimator, and denormalization/referential enforcement/aggregation persistence/archiving via the change feed.