This content originally appeared on DEV Community and was authored by Harshana vivekanandhan
Creating a serverless application using AWS Lambda, API Gateway, and AWS Amplify involves a series of steps to set up and integrate these services. Here's a high-level overview of the process:
1. Set Up AWS Lambda Function
AWS Lambda is a compute service that lets you run code without provisioning or managing servers.
-
Create a Lambda Function:
- Go to the AWS Management Console.
- Navigate to AWS Lambda.
- Click on "Create function."
- Choose a blueprint or start from scratch.
- Configure the function (name, runtime, permissions, etc.).
- Write your function code or upload a zip file.
-
Configure the Lambda Function:
- Set up environment variables if needed.
- Configure the function's execution role to allow necessary permissions.
2. Create an API with Amazon API Gateway
Amazon API Gateway allows you to create and publish RESTful APIs.
-
Create an API:
- Go to the AWS Management Console.
- Navigate to API Gateway.
- Click on "Create API" and choose REST API.
-
Define Resources and Methods:
- Create resources (e.g.,
/items). - Add methods (e.g., GET, POST) to the resources.
- Integrate these methods with your Lambda functions by specifying the Lambda ARN.
- Create resources (e.g.,
-
Deploy the API:
- Create a new stage (e.g.,
dev). - Deploy the API to this stage.
- Note the invoke URL provided by API Gateway for later use.
- Create a new stage (e.g.,
3. Set Up AWS Amplify
AWS Amplify is a set of tools and services to help front-end web and mobile developers build scalable full-stack applications.
-
Initialize a New Amplify Project:
- Install Amplify CLI:
npm install -g @aws-amplify/cli. - Configure the CLI:
amplify configure(follow the prompts to set up your AWS profile). - Initialize your Amplify project:
amplify init.
- Install Amplify CLI:
-
Add API to Your Amplify Project:
- Add an API:
amplify add api. - Choose REST when prompted and provide the necessary details (e.g., path, Lambda integration).
- Push the changes to the cloud:
amplify push.
- Add an API:
4. Build and Deploy Your Frontend with Amplify
-
Create Your Frontend Application:
- You can use frameworks like React, Angular, or Vue.js.
- Amplify supports hosting for static websites.
-
Host Your Application with Amplify:
- Go to the AWS Amplify Console.
- Connect your repository (e.g., GitHub, GitLab).
- Configure build settings and deploy.
5. Testing and Iteration
- Test your application end-to-end.
- Make necessary adjustments to the Lambda functions, API Gateway configurations, or frontend code.
- Utilize Amplify's CI/CD capabilities for automatic deployment on code changes.
Example: Simple Serverless To-Do Application
Here’s a basic example of a serverless To-Do application using AWS Lambda, API Gateway, and AWS Amplify:
Lambda Function: A simple Lambda function to handle CRUD operations on to-do items.
API Gateway: Configure a REST API with paths like
/todosand methods like GET, POST, DELETE.Amplify Frontend: A React application integrated with the API.
This content originally appeared on DEV Community and was authored by Harshana vivekanandhan
Harshana vivekanandhan | Sciencx (2024-07-05T16:20:11+00:00) Serverless Application using AWS Lambda ,Api Gateway,AWS Amplify. Retrieved from https://www.scien.cx/2024/07/05/serverless-application-using-aws-lambda-api-gatewayaws-amplify/
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