Professional Cloud Developer

By Google · Question Mode

QuestionQ7

Designing scalable, available, and reliable cloud-native applications

You are building an ecommerce application that stores customer, order, and inventory data in relational tables within Cloud Spanner. A recent load test shows that Spanner performance is not scaling linearly as expected. Which of the following is causing this?

Explanation

Cloud Spanner range-shards data by primary key. Version 1 UUIDs contain a timestamp in their high-order bits, causing newly inserted primary-key values to cluster in the same range. The resulting write hotspot overloads a split and limits throughput, so performance does not scale linearly.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!