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Independent technical writing /

A growing shelf of practical guides, engineering notes, and lessons learned while building.

2026

  1. 01Linux administrationNov 2026

    Linux Disk Management from Scratch

    A practical walkthrough of partitions, ext4 filesystems, mounting, persistence, and the checks that keep storage changes safe.
  2. 02Spring Boot securityApr 2026

    JWT Authentication in Spring Boot: Complete Guide from Beginner to Advanced

    Build a secure, role-aware JWT flow from the fundamentals through a complete Spring Boot implementation.

2025

  1. 03Spring Data JPANov 2025

    Mastering @ManyToMany in Spring Data JPA: Unidirectional vs Bidirectional (With Complete Code Example)

    Model students, courses, and other many-to-many data with clear ownership, reliable serialization, and maintainable mappings.
  2. 04Spring SecurityOct 2025

    Mastering Spring Security for Beginners: A Hands-On Guide with a Real-World Demo

    Learn the core Spring Security pieces through a practical project, from setup to protected application flows.
  3. 05Spring Data JPAOct 2025

    Spring Data JPA: Mastering @OneToMany and @ManyToOne Relationships

    Understand one-to-many data from both directions with practical entity examples and the common traps to avoid.
  4. 06Spring Data JPASep 2025

    Mastering @OneToOne Relationships in Spring Data JPA: Unidirectional vs. Bidirectional

    Compare both sides of one-to-one mapping while protecting data integrity and avoiding foreign-key and recursion issues.
  5. 07ReactApr 2025

    React.js Key Concepts: From Basics to Best Practices

    A practical introduction to the virtual DOM, components, hooks, forms, props, and routing in modern React.
  6. 08JavaScriptMar 2025

    Understanding JavaScript Concurrency and Parallelism: A Deep Dive into Async Programming

    Trace work through the call stack, event loop, queues, libuv, async/await, and Node.js parallel execution.

2024

  1. 09Spring BootDec 2024

    What Is a Custom Annotation in Spring Boot?

    Create a reusable annotation and pair it with Spring AOP to capture operation timing without repeating application logic.

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