Introduction
Amazon CloudFront is a highly scalable and secure content delivery network (CDN) service that accelerates the delivery of web content. Implementing AWS CloudFront with multiple origin cache behaviors can enhance performance, optimize caching, and improve user experience. This guide outlines how to configure AWS CloudFront with multiple origins using Terraform for automated infrastructure provisioning.
Benefits of Using Multiple Origin Cache Behaviors
- Optimized Performance: By distributing content from multiple origins, response times are reduced.
- Custom Caching Rules: Define different caching policies for different types of content.
- Improved Security: Protect sensitive content by directing it to secure origins.
- Cost Efficiency: Minimize unnecessary data transfer costs by leveraging efficient caching strategies.
Prerequisites
- AWS account with necessary permissions.
- Terraform installed on the local machine.
- Basic understanding of AWS services like S3, API Gateway, and EC2.
Step-by-Step Implementation Using Terraform
Step 1: Define AWS Provider
provider “aws” {
region = “us-east-1”
}
Step 2: Create an S3 Bucket for Static Content
resource “aws_s3_bucket” “static_bucket” {
bucket = “my-static-content-bucket”
acl = “public-read”
}
Step 3: Set Up an API Gateway for Dynamic Content
resource “aws_api_gateway_rest_api” “my_api” {
name = “MyAPI”
description = “API Gateway for dynamic content”
}
Step 4: Configure CloudFront Distribution
resource “aws_cloudfront_distribution” “my_distribution” {
origin {
domain_name = aws_s3_bucket.static_bucket.bucket_regional_domain_name
origin_id = “S3-Origin”
}
origin {
domain_name = aws_api_gateway_rest_api.my_api.execution_arn
origin_id = “API-Origin”
}
default_cache_behavior {
target_origin_id = “S3-Origin”
viewer_protocol_policy = “redirect-to-https”
allowed_methods = [“GET”, “HEAD”]
cached_methods = [“GET”, “HEAD”]
forwarded_values {
query_string = false
cookies {
forward = “none”
}
}
}
ordered_cache_behavior {
path_pattern = “/api/*”
target_origin_id = “API-Origin”
viewer_protocol_policy = “redirect-to-https”
allowed_methods = [“GET”, “HEAD”, “OPTIONS”, “PUT”, “POST”, “PATCH”, “DELETE”]
cached_methods = [“GET”, “HEAD”]
forwarded_values {
query_string = true
headers = [“Authorization”]
}
}
enabled = true
is_ipv6_enabled = true
price_class = “PriceClass_100”
}
Step 5: Apply Terraform Configuration
terraform init
terraform apply -auto-approve
Conclusion
By implementing AWS CloudFront with multiple origin cache behaviors using Terraform, organizations can achieve optimal content delivery, improved performance, and enhanced security. With Terraform’s infrastructure-as-code approach, managing and scaling CloudFront distributions becomes more efficient and automated.