How do I compare AWS API Gateway and API Gateway V2?

AWS API Gateway and API Gateway V2 are services provided by AWS for creating, deploying, and managing APIs. They are designed to handle different types of API use cases. Below, I will explain the differences between them and provide a Pulumi program to create an API using API Gateway V2.

AWS API Gateway

AWS API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale. It supports creating RESTful APIs and HTTP APIs. Key features include:

• RESTful APIs: Designed for creating REST APIs that follow the REST architectural style.
• API Management: Offers tools for managing APIs, including throttling, request validation, and API keys.
• Integration with AWS Services: Tight integration with AWS Lambda, AWS IAM, and other AWS services.
• Custom Authorizers: Support for custom authorizers to control access to your APIs.

AWS API Gateway V2

AWS API Gateway V2, also known as Amazon API Gateway Version 2, is an evolution of the original API Gateway service. It supports both WebSocket APIs and HTTP APIs. Key features include:

• HTTP APIs: Designed for creating low-latency, cost-effective APIs that are optimized for performance.
• WebSocket APIs: Enables real-time, two-way communication between clients and servers.
• Simplified Pricing: More cost-effective pricing model compared to the original API Gateway.
• Improved Performance: Optimized for lower latency and higher throughput.

Pulumi Program to Create an API using API Gateway V2

Below is a Pulumi program written in TypeScript to create an HTTP API using AWS API Gateway V2. This example demonstrates how to create an API, a route, and a deployment.

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create an API Gateway V2 HTTP API
const api = new aws.apigatewayv2.Api("exampleApi", {
    protocolType: "HTTP",
    name: "example-api",
    description: "An example HTTP API",
});

// Create a route for the API
const route = new aws.apigatewayv2.Route("exampleRoute", {
    apiId: api.id,
    routeKey: "$default",
    target: pulumi.interpolate`integrations/${api.id}`,
});

// Create a deployment for the API
const deployment = new aws.apigatewayv2.Deployment("exampleDeployment", {
    apiId: api.id,
    description: "Initial deployment",
});

// Export the API endpoint
export const apiEndpoint = api.apiEndpoint;

Explanation

• aws.apigatewayv2.Api: This resource creates an API Gateway V2 HTTP API. The protocolType is set to “HTTP”, which specifies that this is an HTTP API.
• aws.apigatewayv2.Route: This resource creates a route for the API. The routeKey is set to “$default”, which means this route will handle all requests to the API. The target specifies the integration target for the route.
• aws.apigatewayv2.Deployment: This resource creates a deployment for the API. A deployment is required to make the API changes available.
• api.apiEndpoint: This exports the API endpoint URL, which you can use to make requests to your API.

This example shows how to create a basic HTTP API using AWS API Gateway V2 with Pulumi. You can expand this program by adding more routes, integrations, and stages as needed for your use case.