Amazon S3 – How to fix ‘The request signature we calculated does not match the signature’ error?

The problem stemming from object keys starting with a period (or containing special characters not typically used in filenames) is indeed a tricky one to catch, primarily because the significance of such characters may not be immediately apparent.

For the benefit of others facing similar issues with AWS S3 or the AWS SDK in general, …

Can an AWS Lambda function call another

Below is a detailed example of how you could set up a Lambda function in Node.js to invoke another Lambda function, incorporating some error handling and commenting for clarity.

This example assumes you have two Lambda functions:

CallerLambdaFunction – The function that will call the other Lambda function.

TargetLambdaFunction – The function that will be called by the …

How to get an AWS EC2 instance ID from within that EC2 instance?

To get the AWS EC2 instance ID from within the EC2 instance itself, you can use a simple command-line tool available in most Linux distributions, such as wget or curl. This approach utilizes the EC2 instance metadata service, which is a service provided by AWS that allows EC2 instances to learn about themselves without using …

How to pass a querystring or route parameter to AWS Lambda from Amazon API Gateway

Passing Parameters to AWS Lambda via Amazon API Gateway

There are two primary methods to pass query string parameters or route parameters from Amazon API Gateway to an AWS Lambda function: Lambda Custom Integration and Lambda Proxy Integration.

Lambda Custom Integration

Open the API Gateway Console: Go to the Amazon API Gateway console and select your API.

Select the …