MOHANED - Invidious

MOHANED

Real backend engineering for Java developers.

I build and explain practical backend systems with Spring Boot—from secure REST APIs and PostgreSQL databases to testing, Docker, Redis, microservices, messaging, performance, and system design.

Each video focuses on the decisions, trade-offs, and implementation details behind reliable backend software, so you can build beyond basic tutorial demos.

Subscribe to learn how real backend systems are designed, built, tested, secured, and improved.

Code and projects: github.com/devMohaned

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8:11

Should This Backend Work Be Async? (Queues Explained)

MOHANED

Shared 3 days ago

52 views

8:09

How Backend Systems Handle Massive Traffic

MOHANED

Shared 1 week ago

167 views

9:54

Run Tasks Automatically in Spring Boot with Cron Jobs

MOHANED

Shared 2 weeks ago

183 views

15:35

I Built 3 Spring Boot Microservices with Kafka, PostgreSQL, Docker & Tracing

MOHANED

Shared 3 weeks ago

2K views

7:07

Why Your Spring Boot API Is Slow (Caching Explained)

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Shared 4 weeks ago

163 views

12:27

I Optimized This API From 92 Seconds to 5ms

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Shared 1 month ago

73 views

10:04

Handle Webhooks in Spring Boot Like a Production Backend Developer

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Shared 1 month ago

200 views

15:00

Don’t Let Users Login Until They Verify Email | Spring Boot

MOHANED

Shared 1 month ago

129 views

4:23

Stop Using H2 for Spring Boot Integration Tests

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Shared 1 month ago

63 views

8:34

Stop Returning JPA Entities from Your Controllers | Use DTOs Instead

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Shared 2 months ago

134 views

22:25

Build a Login & Registration System with Spring Boot, JWT, PostgreSQL, and Spring Security

MOHANED

Shared 2 months ago

231 views

8:05

What Happens When 1000 Users Hit Your Backend?

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Shared 2 months ago

253 views

16:35

Build a Secure File Upload API with Spring Boot 4 & Java 21

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Shared 2 months ago

430 views

12:26

I Optimized This API From 92 Seconds to 5ms

MOHANED

Shared 2 months ago

427 views

21:47

@Transactional Not Working in Spring Boot? Here’s Why

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Shared 2 months ago

234 views

10:37

Dockerize a Spring Boot App Like a Real Backend Developer

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Shared 3 months ago

458 views

8:27

Spring Boot Project Structure for Beginners | Clean & Scalable Setup

MOHANED

Shared 3 months ago

204 views

8:31

Unit Test vs Integration Test in Spring Boot | Explained with Real Examples

MOHANED

Shared 3 months ago

140 views

15:12

Build a Todo App REST API with Spring Boot | Full Project

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Shared 3 months ago

338 views

25:04

Optimistic vs Pessimistic Locking in Spring Boot with Examples

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Shared 4 months ago

156 views

2:40

Diamond Problem in Java

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Shared 4 months ago

38 views

0:23

Can you implement multiple interfaces

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Shared 4 months ago

11 views

8:34

Abstract Class vs Interface

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Shared 4 months ago

23 views

2:09

Can we override a private method

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Shared 5 months ago

31 views

1:48

Can we instantiate an interface

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Shared 5 months ago

22 views

0:14

Can class extend multiple classes

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Shared 5 months ago

12 views

0:56

Can interface have static methods

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Shared 5 months ago

27 views

2:06

Can an abstract class have constructors

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Shared 5 months ago

22 views

4:09

What is polymorphism or static polymorphism or dyanmic polymorphism

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Shared 6 months ago

45 views

3:35

What is this keyword in Java

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Shared 6 months ago

7 views

2:04

What is super keyword in Java

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Shared 6 months ago

20 views

2:43

What is static methods and static variables

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Shared 6 months ago

8 views

1:42

What is static block in Java

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Shared 6 months ago

14 views

1:03

What is OOP

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Shared 7 months ago

17 views

2:46

What is method overriding

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Shared 7 months ago

14 views

1:25

What is inheritance

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Shared 7 months ago

7 views

5:26

What is final keyword in Java

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Shared 7 months ago

9 views

0:19

What are the main principles of OOP

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Shared 7 months ago

21 views

6:30

How to find DAILY Jobs on LinkedIn (Remote included)

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Shared 7 months ago

20 views

1:46

What are anonymous blocks

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Shared 8 months ago

18 views

1:25

Difference between class and object

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Shared 8 months ago

7 views

1:20:21

How to 100% "Test" Cover your Spring Boot project | Java

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Shared 8 months ago

22 views

0:22

Purpose of @Override annotation

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Shared 8 months ago

17 views

0:52

Can you make main method private

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Shared 8 months ago

54 views

0:26

What is a multidimensional array

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Shared 8 months ago

10 views

0:52

Can we override a constructor

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Shared 8 months ago

15 views

0:29

How is an array defined in Java

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Shared 8 months ago

29 views

1:16

Can we have java as package name

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Shared 8 months ago

4 views

1:44

Difference between while and do while loop

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Shared 8 months ago

10 views

0:15

Can we declare multiple classes in a single file

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Shared 9 months ago

4 views

11:35

Difference between public, private, protected, and default access

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Shared 9 months ago

20 views

0:43

Can a constructor be private

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Shared 9 months ago

33 views

1:22

Difference between float and double

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Shared 9 months ago

15 views

1:00

Can we store different data types in an array

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Shared 9 months ago

16 views

0:42

What is a identifier in Java

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Shared 9 months ago

7 views

0:43

Can we return an array from a method

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Shared 9 months ago

3 views

4:18

What is a constant in Java

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Shared 9 months ago

15 views

1:03

What are wrapper classes

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Shared 9 months ago

13 views

0:46

What is type casting

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Shared 10 months ago

16 views

1:45

What are varargs

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Shared 10 months ago

9 views