Serverless Architecture

Manara is a serverless application built on AWS cloud services, implementing a REST API for managing to-do lists and customer records. The architecture leverages various AWS services to create a scalable, serverless, and secure solution.

Flow Summary

User accesses the web app via app.todolist.com

Route 53 resolves the domain to an S3-hosted static website

The frontend (S3) sends HTTP requests to API Gateway

API Gateway routes the requests to specific Lambda functions

Lambda functions perform CRUD operations on DynamoDB that stors to-do items using a key-value/document data model

CloudWatch captures logs and metrics from Lambda executions

IAM roles securely manage permissions across all components

Architecture Components

DNS Layer (Route 53)

Domain name registration and management

DNS routing policies (weighted, latency-based, geolocation)

Frontend Layer (S3)

Static website hosting on Amazon S3

Direct integration with API Gateway

Responsive web interface for CRUD operations

Secure access through HTTPS

API Layer (API Gateway)

RESTful endpoints for all CRUD operations

Request validation and transformation

API versioning support

CORS configuration

Rate limiting and throttling

Logic (Lambda)

Serverless functions for each CRUD operation

Event-driven architecture

Stateless execution

Automatic scaling based on demand

Node.js runtime environment

Data Layer (DynamoDB)

NoSQL database for data persistence

Flexible schema design

Automatic scaling

Support for both document and key-value data models

Optimized for high-performance CRUD operations

Security Implementation

AWS IAM

Fine-grained access control

Role-based authentication

Resource-based policies

Least privilege principle implementation

Monitoring and Logging

CloudWatch Integration

Real-time monitoring

Custom metrics and dashboards

Log aggregation

Automated alerting

Performance metrics tracking

?‍? Author

Rana Elmazeny