You need to create a document database that supports database triggers. Which NoSQL database should you use?

What is recommended size for Redis keys?

What does redis use to sort the elements of a sorted set?

You need to change the shard key of an existing MongoDB collection. What do you do?

Polyglot storage means using multiple types of what in the same application?

You need to implement the simplest possible scalable, in-memory cache for your AWS application. Which service do you select?

You need to create a data store for the catalog for your new ecommerce application. Your company is a startup, so the catalog schema may evolve. Which do you choose?

You need to create a scalable database that supports immutable writes. What do you use?

Which command do you use to add a value to a Redis stream named mystream?

Which statement accurately describes global secondary indexes in DynamoDB?

Which method shows you whether MongoDB uses any indexes when running a query, and how the indexes are used?