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The Backend Chronicles

Mastering the art of server-side engineering. Deep dives into system design, databases, and scalable architecture.

Latest Articles

What Is System Architecture? System Design vs System Architecture Explained

System architecture is the high-level structure of a software system. System design turns that structure into something buildable. This guide defines both, shows where they separate, and covers the decisions each one is responsible for.

Toluwanimi Fawole

8/17/2026

Backend

Mastering Spring Security 7 with Spring Boot 4 and Java 21 – Part 8.2: Custom OAuth2UserService and Persisting Users in the Database

After a user successfully authenticates with Google, Spring Security retrieves the user's profile information.

Ayush Shrivastava

7/31/2026

Backend

Mastering Spring Security 7 with Spring Boot 4 and Java 21 – Part 8.1: Configuring Google OAuth2 Login in Spring Boot

Google acts as the Authorization Server, while your Spring Boot application acts as the OAuth2 Client.

Ayush Shrivastava

7/30/2026

Backend

Mastering Spring Security 7 with Spring Boot 4 and Java 21 – Part 8: OAuth2 Login, Social Authentication, and OpenID Connect

Spring Security provides built-in support for OAuth2 and OpenID Connect (OIDC), making it straightforward to integrate third-party identity providers into Spring Boot applications.

Ayush Shrivastava

7/29/2026

Backend

Mastering Spring Security 7 with Spring Boot 4 and Java 21 – Part 7: JWT Authentication and Authorization for Secure REST APIs

In this article, we will build a complete JWT-based authentication system using Spring Security 7, Spring Boot 4, and Java 21.

Ayush Shrivastava

7/27/2026

Backend

Mastering Spring Security 7 with Spring Boot 4 and Java 21 – Part 6: Method-Level Security with @PreAuthorize, @PostAuthorize, and @Secured

In this article, we will learn how to implement method-level security in Spring Security 7 using Spring Boot 4 and Java 21.

Ayush Shrivastava

7/21/2026

Backend Projects

Mastering Spring Security 7 with Spring Boot 4 and Java 21 – Part 5: Roles vs Authorities Explained

In this article, we will explore role-based and authority-based authorization in Spring Security 7, understand their differences, and implement production-ready access control for REST APIs.

Ayush Shrivastava

7/20/2026

Python

FastAPI: The Modern Python Framework for Building High-Performance APIs

FastAPI is one of the fastest-growing Python web frameworks for building RESTful APIs.

Ayush Shrivastava

7/17/2026

Python

Writing Your First Python Automation Script

Writing automation scripts in Python allows you to replace repetitive manual tasks with reliable, reusable code.

Toluwanimi Fawole

7/14/2026

Python

Python Roadmap for AI Developers (2026)

This guide provides a complete roadmap to becoming an AI Engineer using Python.

Ayush Shrivastava

9/19/2026

Backend

Mastering Spring Security 7 with Spring Boot 4 and Java 21 – Part 4: Custom UserDetailsService and Database Authentication with Spring Data JPA

This approach is used in production systems such as e-commerce applications, HRMS platforms, banking systems, SaaS products, and enterprise applications.

Ayush Shrivastava

7/6/2026

Backend

Why Should You Join the Workshop?

By the end of this workshop, you will have a clear understanding of how modern AI applications are built, deployed, and scaled.

Ayush Shrivastava

7/2/2026

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