I recently took a look at the Amazon Timestream NoSQL time series serverless database service.

tl;dr - I found the getting started process to be quick and easy. Timestream presents in the AWS console as a purpose-built table-as-a-service.

Amazon includes two small sample datasets, one for IoT and one for DevOps. Also they include two versions of each sample - single-record or multi-record. Additionally they supply example queries for each of the 4 types of sample data presented via the console. Shown below (from the Amazon documentation) is a summary of the modeling approach types.

Of note are a set of time-series functions, available via extensions to the SQL query language which is supported for Timestream.

For a summary - see the notes page in my Hello-AWS-Data-Services Github repo for Timestream.