Question 145:
KindleYou is a location-based social search mobile app that allows users to like or dislike other users, and allows users to chat if both parties liked each other in the app. It has more than 1 billion customers across the world. They use DynamoDB to support the mobile application and S3 to host the images and other documents shared between users. DynamoDB has a table with 60 partitions and is being heavily accessed by users. There are lots of hot partitions. How can we address writing to different shards to distribute the workload efficiently to both read and write operations? select 2 options.
Answer options:
A.distributing loads more evenly across a partition key space is to add a random number to the end of the partition key values to improve writes B.use a number that you can calculate based upon something that you want to query on to improve reads C.distributing loads more evenly across a partition key space is to add a random number to the end of the partition key values to improve reads D.use a number that you can calculate based upon something that you want to query on to improve writes