Learn about the Time to Live (TTL) feature of dynamoDB, how to enable it in the console, its salient features and advantages.
Category: AWS
AWS Lambda Serverless – Packaging nodejs modules to a layer
Learn how to package the node_modules into a layer on AWS Lambda, so that your application code remains visible on the lambda console.
Add a Cognito user to DynamoDB on sign up confirmation
Learn how to add a new Cognito user to DynamoDB (using lambda as the intermediary) as soon as the user’s sign up is confirmed.
Delete a Cognito User using AWS Lambda Python
Learn how to delete users from Cognito using lambda functions in two ways: admin_delete_user and delete_user. Also see how the two methods compare.
Send retained messages from a thing to AWS IoT Core
Learn how to send retained messages from a thing to the AWS IoT Core, and how to view the retained messages on the IoT Core Console.
AWS IoT Core – Using Basic Ingest to reduce costs
Learn how to use basic ingest to save on messaging costs, which form a big chunk of the total costs incurred during the interaction of things with AWS IoT Core.
Triggering a Lambda using Rules in AWS IoT Core
Learn how to trigger an AWS Lambda if the incoming messages on a topic in AWS IoT Core satisfy certain conditions. Article includes rule creation and testing.
Publishing from Lambda to an AWS IoT Topic
Learn how to publish a message from AWS Lambda to a topic on AWS IoT Core. We use the python 3.6 runtime in this tutorial.
How to connect ESP32 to AWS IoT Core
Learn detailed steps for connecting the ESP32 to AWS IoT Core. This article covers AWS setup, ESP32 setup, code walkthrough and testing.
Temporary storage during AWS Lambda runtime – Python
Need to temporarily store files during the runtime of AWS Lambda? Luckily, there is a 512 MB file-system that comes with each lambda. Learn how to use it.