Terraform Learning

This is a simple repo I did to learn Terraform with LocalStack by myself

Setup

You can check the setup.sh script for installing Terraform and LocalStack CLI. That script is designed for macOS with Homebrew.

Prerequisites

Make sure LocalStack is running:

localstack start

Examples Overview

01-dynamodb

Learn: DynamoDB tables, primary keys, GSI (Global Secondary Index)

Creates a users table with email-based secondary index for alternative query patterns.

02-sqs

Learn: Message queues, FIFO vs standard queues, dead letter queues

Creates multiple SQS queues demonstrating different queue types and patterns.

03-lambda

Learn: Serverless functions, IAM roles, function deployment

Creates a Python Lambda function that processes events with different actions.

04-sns

Learn: Pub/sub messaging, fan-out pattern, message filtering

Creates SNS topic with SQS subscriptions and demonstrates message routing with filter policies.

05-api-gateway

Learn: REST APIs, Lambda integration, API deployment

Creates a REST API with multiple endpoints backed by Lambda functions.

How to Use

Each example is independent. Navigate to any example and run:

cd 01-dynamodb
terraform init
terraform apply

Follow the instructions in each example's README.md for testing and cleanup.

Learning Path

The examples are ordered by complexity:

1. Start with DynamoDB (simplest - just resource creation)
2. Move to SQS (introduces multiple resources and relationships)
3. Try Lambda (adds code deployment and packaging)
4. Explore SNS (demonstrates resource integration)
5. Build API Gateway (most complex - multiple services working together)

Tips

• Always run terraform destroy when done to clean up resources
• Use awslocal commands to interact with LocalStack services
• Check the README.md in each example for specific testing commands
• Each example includes outputs that show important resource information