Goal In this post, I will show you how to use Amazon S3 Object Lambda to resize images on the fly. The Serverless Framework will be used to define the Infrastructure as Code and to simplify the deployment. Sharp will be used to resize the images. Lambda will be written using…

Hi Shuvo, AWS Lambda works as follow: 1) When you invoke a lambda function the first time, AWS creates a container (cold start) 2) AWS executes your lambda inside the container 3) After the execution, AWS put the lambda in a pool for some time (about 15 min) to be resued 4) Next execution, AWS checks if there is any container available and uses that one (warm start) You pay only for the time the lambda executes, not for the time the Lambda container is put in the pool and kept warm

Thanks Yusufbek! That is a naming convention that comes from the Serverless translation of the YAML file into a real resource. If you see the the YAML file I created a "resizer" function functions: resizer: handler: handler.resizer environment: BUCKET_NAME: ${self:custom.bucketName} That function is translated into "ResizerLambdaFunction" from Serverless :)

Goals In my previous tutorials, we started learning about the Serverless framework. In particular, in: “Serverless Framework: Deploy an HTTP endpoint using NodeJS, Lambda on AWS” we have learnt how to create an AWS Lambda HTTP endpoint implemented in NodeJS with Express using the Serverless framework “Serverless Framework: Deploy a REST…

Goals In my previous tutorial “Serverless Framework: Deploy an HTTP endpoint using NodeJS, Lambda on AWS” we have learnt how to create an AWS Lambda HTTP endpoint implemented in NodeJS with Express using the Serverless framework. Today we are going to learn how to: Create and deploy a REST API with…

Goals Today you are going to learn how to create an AWS Lambda HTTP endpoint implemented in NodeJS with Express using the Serverless framework What’s the Serverless Framework? “ Serverless is your toolkit for deploying and operating serverless architectures. Focus on your application, not your infrastructure. — Serverless.com ”