Delve into software architecture, exploring key principles, patterns, and quality attributes. Gain insights with case studies and projects, enhancing your practical skills in system design and optimization.

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This course offers a deep dive into the world of software architecture. It’s designed to equip software developers and architects with the knowledge and skills necessary to create, evaluate, and optimize software systems. The course covers a range of critical topics to ensure a strong foundation in architectural principles and strategies.

You will start by exploring architectural concepts and the relationship between quality attributes, requirements, and architectural styles. You’ll also examine different architectural patterns and strategies, including centralized and decentralized architecture, layered pattern, broker pattern, and microservices. Then, you’ll go into the details of important quality attributes needed while developing an architecture.

The course is equipped with multiple case studies and two projects to further enhance learning. These real-world scenarios and hands-on projects are strategically incorporated to give learners practical insights.

Software Architecture in Applications

# Overview

REST is a software architecture implemented to create web services. It follows certain constraints to ensure consistent and reliable communication between the client and server.

# Constraints
The REST architecture has a few key principles that guide its design and behavior. These include:

+ **Client-Server:** The architecture is separated into two main components, the client and the server. The client is responsible for the user interface and user experience, while the server is responsible for managing the resources and business logic.


+ **Stateless:** The server doesn't maintain any information about the client's state; each request from the client contains all the information necessary for the server to understand and respond to the request.


+ **Cacheable:** Responses from the server can be cached by the client, allowing for faster response times and reducing the load on the server.


+ **Layered system:** The architecture is divided into layers, each having a specific responsibility. The client communicates with the server through the interface provided by the top layer, while the bottom layer interacts with the database or other resources.

# Endpoints and methods
A RESTful API comprises a set of endpoints, each representing a specific resource and a set of methods, or HTTP verbs, that can be used to interact with the resource.


+ `GET`: Retrieve a resource or a list of resources.
+ `POST`: Create a new resource.
+ `PUT`: Update an existing resource.
+ `DELETE`: Delete a resource.
# Example
An example of a RESTful API for a blog website could have the following endpoints:


+ `GET /posts`: Retrieve a list of all the blog posts.
+ `GET /posts/:id`: Retrieve a specific blog post by ID.
+ `POST /posts`: Create a new blog post.
+ `PUT /posts/:id`: Update an existing blog post.
+ `DELETE /posts/:id`: Delete a specific blog post.

A client could request the `GET /posts` endpoint to retrieve a list of all the blog posts, and then request the `GET /posts/:id` endpoint to retrieve a specific post, passing the ID as a parameter.


Get an overview of REST APIs and their constraints and endpoints.

Getting Started

The Architecture Meta-Frame

Architectural Styles and Strategies

Architectural Styles and Strategies

Scalability

Availability

Load Balancing

A Basic Load Balancer

Security

Caching

Web Architecture

Case Studies

A Basic MVC Data Flow

Conclusion

REST API

Overview

Constraints