AWS Lambda + S3 Trigger — Terraform SRE Starter

This project sets up a reliable, serverless event-driven architecture using AWS Lambda and S3, provisioned via Terraform. It demonstrates core Site Reliability Engineering (SRE) principles like observability, graceful failure handling, and infrastructure as code (IaC).

🌍 Use Case

When a new object is uploaded to an S3 bucket, a Lambda function is triggered to process the event. The function includes retry logic and structured logging, helping ensure that transient failures are automatically retried and logged for analysis.

---

🚀 What This Project Includes

• ✅ AWS Lambda function written in Python 3.9
• ✅ S3 bucket trigger on object upload
• ✅ Terraform-based infrastructure provisioning
• ✅ Retry logic with exponential backoff using tenacity
• ✅ Observability via structured logs (viewable in CloudWatch)
• ✅ Beginner-friendly project structure and documentation

---

🛠️ Getting Started

Prerequisites

• AWS CLI configured (aws configure)
• Terraform installed
• Python 3.9+
• Git

Setup Steps

1. Clone the repo

   git clone https://github.com/ankushnema/aws-lambda-s3-terraform-sre-starter.git
   cd aws-lambda-s3-terraform-sre-starter