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In this in-depth Java tutorial, we break down Java HashMap Internals and explain how hashing, collision handling, rehashing, and ...

In 2026, learning more programming languages will not help your career. Learning the right language, deeply, will. This video is ...

Not sure when to use Kafka and RabbitMQ? In this video, I explain the difference between Kafka and RabbitMQ using clear ...

This confuses even experienced devs: At-least-once and Exactly-once? In this video, I explain the difference between ...

Java Thread Interview Questions | Core Multithreading Explained | Part 1/4 Link to Pdf ...

A common interview trap: Idempotent API and Non-Idempotent API? In this video, I explain the difference between Idempotent API ...

... Prysm Labs – Backend Developer Internship (Unstop) https://bit.ly/4qAml7o #BackendInternship #SoftwareEngineeringIntern ...

This confuses even experienced devs: Stateless Service and Stateful Service? In this video, I explain the difference between ...

Still mixing up Blue-Green Deployment and Canary Deployment? In this video, I explain the difference between Blue-Green ...

Method Overloading vs Method Overriding in Java – Explained Clearly This is one of the most important Core Java OOPS ...

Day 3 to Day 5 of my 45 Days Interview Preparation Journey In this video, I share my DSA progress update, daily discipline ...

Java Real Time Project (ELSP) In this video, we start a Spring Boot Microservices Realtime Project and explain microservices ...

In this video, we will implement services and controllers for uploading the video and serving it to the client using AWS S3. Here is ...

... for off-campus opportunities - Competitive programming readiness - Backend developer skills For AP & Telangana Students: ...

Learn API Versioning in Spring Boot 4 (2026) with a complete step‑by‑step guide! In this video, we cover 3 powerful ways to ...

... https://www.youtube.com/watch?v=1wqCyz7XrV4&list=PLu71SKxNbfoCy_MsA98SBfvUKF5eQit6L Backend development with ...

In this video, I share a complete Java Backend Developer Roadmap for 2026. This roadmap is perfect for beginners, students, and ...

Full Stack Development: Specialized tutorials on becoming a skilled Backend Developer. - DSA (Data Structures & Algorithms): ...

Welcome to john Codes — Learn to Code Step-by-Step! ‍ A channel where tech makes sense, and learning to code becomes ...