This sample accompanies the blog post How to Run Real-Time Filtering and Aggregation Queries on DynamoDB with Tinybird.

It provides sample code to seed and stream data to a DynamoDB database. DynamoDB credentials are stored in a .env file.

A sample .datasource file is also provided for configuring a DynamoDB Data Source in Tinybird.

The following values are needed to allow the code to create and write to tables in a DynamoDB instance.

AWS_ACCESS_KEY_ID=
AWS_SECRET_ACCESS_KEY=
AWS_DEFAULT_REGION=

The seed.mjs file will create the following 4 tables within DynamoDB and seed them with an inital set of random data.

• Riders
• Scooters
• Rides
• Maintenance Logs

In a terminal, execute seed.mjs.

node seed.mjs

The stream_test.mjs file will stream additional random data to the previously created DynamoDB tables. This is to demonstrate the streaming capabilities of DyanmoDB to Tinybird using the Tinybird DynamoDB Connector.

In a terminal, execute stream_test.mjs.

node stream_test.mjs