# Building faster AWS Lambda functions

This repo shows three versions of the same function with minor changes in configuration to reduce the duration time. 

Important: this application uses various AWS services and there are costs associated with these services after the Free Tier usage - please see the [AWS Pricing page](https://aws.amazon.com/pricing/) for details. You are responsible for any AWS costs incurred. No warranty is implied in this example.

```bash
.
├── README.MD                   <-- This instructions file
├── v1                          <-- Source code for v1 function
├── v2                          <-- Source code for v2 function
├── v3                          <-- Source code for v3 function
```

## Requirements

* AWS CLI already configured with Administrator permission
* [AWS SAM CLI installed](https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-cli-install.html) - **minimum version 0.48**.
* [NodeJS 12.x installed](https://nodejs.org/en/download/)

## Installation Instructions

1. [Create an AWS account](https://portal.aws.amazon.com/gp/aws/developer/registration/index.html) if you do not already have one and login.

2. Clone the repo onto your local development machine:
```
git clone https://github.com/aws-samples/building-faster-aws-lambda-functions
```

3. To deploy a version, navigate to the version directory and run:
```
sam build
sam deploy --guided 
```
During the prompts, enter the stack name, your preferred Region, and then accept the defaults. 

If you have any questions, please [contact the author](https://twitter.com/jbesw) or raise an issue in the GitHub repo.

==============================================

Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.

SPDX-License-Identifier: MIT-0