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LeetJourney
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Welcome! 👋 You're in the right place if you want to ace your technical interviews and level up as a software engineer.

I'm a Senior Software Engineer with years of hands-on experience at multiple tech companies. I created this channel to share the tips, knowledge, and real-world insights I wish I had when I was starting out — from AI, Java, Spring Boot, and system design, to interview prep and career advice.

Whether you're a student, a junior dev, or someone aiming to break into the industry, there's something here for you.

Subscribe and let's grow together as engineers. 🚀

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10:14

Spring Boot 4 - Pagination and Sorting (Part 8) - JPA | Beginner to Intermediate - REST API

LeetJourney

Shared 3 days ago

114 views

10:29

Spring Boot 4: The NEW Way to Call REST APIs (HTTP Interface Client Explained)

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Shared 5 days ago

181 views

42:24

Spring Boot 4 Microservices Project - Home Energy Tracker - Insight Service & Ollama (Part 8)

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Shared 1 week ago

214 views

10:58

Spring Boot 4 - DTOs - Data Transfer Objects (Part 7) | Beginner to Intermediate - REST API

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Shared 1 week ago

191 views

5:59

Spring Boot 4 - Input Validation (Part 6) | Beginner to Intermediate - Jakarta Bean Validation

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Shared 1 week ago

110 views

24:01

Most Asked Spring Boot Interview Questions & Answers (in 2026)

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Shared 2 weeks ago

569 views

12:43

Spring Boot 4 - Exceptions (Part 5) | Beginner to Intermediate - REST API

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Shared 2 weeks ago

132 views

23:25

Spring Boot 4 Microservices Project - Home Energy Tracker - Alert Service & Mailpit SMTP (Part 7)

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Shared 3 weeks ago

282 views

9:42

Spring Boot 4 - Service Layer (Part 4) | Beginner to Intermediate - REST API

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Shared 4 weeks ago

179 views

56:26

Spring Boot 4 Microservices Project - Home Energy Tracker - Usage Service & Influx DB (Part 6)

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Shared 1 month ago

252 views

26:19

Spring Boot 4 - Spring Data JPA (Part 3) | Beginner to Intermediate - REST API

LeetJourney

Shared 1 month ago

244 views

12:59

I Vibe Coded a Live Flight Tracker in 10 minutes - Google Antigravity

LeetJourney

Shared 1 month ago

248 views

16:11

Spring Boot 4 - CRUD Endpoints (Part 2) | Beginner to Intermediate - REST API

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Shared 1 month ago

379 views

8:48

Spring Boot 4 - Project Structure and Rest Controller (Part 1) | Beginner to Intermediate - REST API

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Shared 1 month ago

707 views

42:04

Spring Boot 4 Microservices Project - Home Energy Tracker - Ingestion Service & Kafka (Part 5)

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Shared 1 month ago

401 views

11:19

How to run Kafka KRaft Mode - with Kafbat UI - Docker Compose

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Shared 1 month ago

459 views

13:04

Spring Boot - Full Microservices Course - Ticketing System - Open API & Swagger (Part 9)

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Shared 1 month ago

146 views

9:50

Spring Boot - Full Microservices Course - Ticketing System - Circuit Breaker & Resilience4J (Part 8)

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Shared 1 month ago

64 views

11:36

Spring Boot - Full Microservices Course - Ticketing System - Keycloak & JWT (Part 7)

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Shared 1 month ago

85 views

12:27

Spring Boot - Full Microservices Course - Ticketing System - API Gateway (Part 6)

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Shared 1 month ago

92 views

17:36

Spring Boot - Full Microservices Course - Ticketing System - Order Service (Part 5)

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Shared 1 month ago

75 views

13:24

Spring Boot - Full Microservices Course - Ticketing System - Kafka (Part 4)

LeetJourney

Shared 1 month ago

104 views

33:22

Spring Boot - Full Microservices Course - Ticketing System - Booking Service (Part 3)

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Shared 1 month ago

127 views

9:02

Spring Boot - Full Microservices Course - Ticketing System - Flyway and DB Migration (Part 2)

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Shared 1 month ago

115 views

21:18

Spring Boot - Full Microservices Course - Ticketing System - Inventory Service (Part 1)

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Shared 1 month ago

588 views

34:40

Spring Boot 4 - Full Microservices course - Home Energy Tracker - Device Service (Part 4)

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Shared 1 month ago

397 views

10:21

Spring Boot 4 - Full Microservices course - Home Energy Tracker - Migration Guide (Part 3)

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Shared 1 month ago

347 views

9:56

How to migrate to Spring Boot 4

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Shared 1 month ago

1.1K views

53:15

Spring Boot 4 - Full Microservices course - Home Energy Tracker - User Service (Part 2)

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Shared 1 month ago

846 views

5:57

Spring Boot 4 - What's new in this release?

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Shared 1 month ago

2.6K views

16:48

Spring Boot 4 - Full Microservices course - Home Energy Tracker - System Design (Part 1)

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Shared 1 month ago

1.3K views

30:36

Java for coding interviews - 30 Minutes Crash Course

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Shared 2 months ago

286 views

19:23

Load Testing a Spring Boot REST API (with JMeter)

LeetJourney

Shared 2 months ago

512 views

20:54

How to build an MCP Server with Spring AI (with MCP Host set up in Claude Desktop)

LeetJourney

Shared 2 months ago

782 views

4:41

MCP Explained - Model Context Protocol - MCP Server vs MCP Host vs MCP Client

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Shared 3 months ago

294 views

29:40

How Brilliant Helped Me Build an Image Processing API (Spring Boot Tutorial)

LeetJourney

Shared 3 months ago

441 views

11:26

How to mock APIs using Postman - Mock Servers

LeetJourney

Shared 3 months ago

257 views

4:37

Authentication 101 - When to use which? Bearer, OAuth2, JWT, Kerberos, SSO

LeetJourney

Shared 4 months ago

434 views

28:57

JWT Authentication with Spring Security | Full Spring Boot Example

LeetJourney

Shared 4 months ago

4.6K views

17:37

Spring Security - Login Form

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Shared 4 months ago

573 views

49:20

Spring Boot Stock Tracker - Portfolio Project - REST API

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Shared 4 months ago

2K views

10:26

Time Limiter in Resilience4j | Stop Long-Running Calls in Spring Boot

LeetJourney

Shared 5 months ago

280 views

8:15

Retry Mechanism - Resilience 4J + Spring Boot Implementation Example

LeetJourney

Shared 6 months ago

366 views

9:56

API Rate Limiter - Resilience4J + Spring Boot Implementation Example

LeetJourney

Shared 6 months ago

1K views

12:27

Circuit Breaker Pattern - Resilience4J + Spring Boot Implementation Example

LeetJourney

Shared 6 months ago

726 views

12:40

Spring AI Intro: Integrate LLM in Spring Boot with Ollama (with OllamaChatModel)

LeetJourney

Shared 6 months ago

886 views

15:10

What is Aspect Oriented Programming (AOP) in Spring Boot - Code Example

LeetJourney

Shared 7 months ago

2.1K views

23:25

How I built a Leetcode AI Overlay - Python & Ollama

LeetJourney

Shared 7 months ago

1.3K views

27:11

Kafka + Springboot - Asynchronous communication implementation

LeetJourney

Shared 7 months ago

1.4K views

47:48

Springboot 3 + AI - Daily News Brief Service with dynamically generated HTML - Portfolio Project

LeetJourney

Shared 8 months ago

1.4K views

14:13

Build a Real-Time AI Interview Assistant - Python & Ollama Portfolio Project

LeetJourney

Shared 9 months ago

4K views

57:43

Springboot 3 Project - Asteroid Collision Notification Service - Nasa API

LeetJourney

Shared 9 months ago

2.5K views

2:20:30

Spring Boot 3 Microservices portfolio project with Java - Full Course

LeetJourney

Shared 10 months ago

25K views

5:04

I asked Grok 3 and ChatGPT-4 to solve these Leetcode HARD questions... we have a clear winner

LeetJourney

Shared 10 months ago

817 views

11:53

DB migration and version control with Flyway | Springboot Example

LeetJourney

Shared 11 months ago

1.7K views

6:51

I asked Deepseek R1 to solve these 5 Leetcode HARD questions

LeetJourney

Shared 11 months ago

467 views

6:43

Start doing this to get interviews... (in 2026) as a last year college student

LeetJourney

Shared 11 months ago

207 views

4:28

DeepSeek R1 vs ChatGPT-4 a Leetcode speed test | One AI got obliterated

LeetJourney

Shared 11 months ago

2.1K views

5:46

How DeepSeek AI can help you prepare for Software Engineering Interviews | with Leetcode example

LeetJourney

Shared 11 months ago

392 views

9:14

JaCoCo Java test coverage - Springboot app with example

LeetJourney

Shared 11 months ago

3.3K views

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