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Observer Design Pattern Explained | Real-Life Use Case + Code Example
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Welcome to Lecture 11 of the Ultimate Low-Level Design (LLD) Series by Coder Army!
Third week for #lowleveldesign #systemdesign #8weeksLLdchallenge.
We are doing 8 weeks challenge and going to complete the whole course within the duration with quality content on Youtube. Let’s learn LLD like never before and attain advance level mastery on this subject.
Hey! Something just changed..."*
That’s the magic of the *Observer Design Pattern* — when one object changes, others are instantly notified.
In this video, we’ll cover:
- What is the Observer Design Pattern?
- Real-world use cases (like notification systems, event listeners)
- Clean C++ implementation step-by-step
- How to use it in real projects like YouTube
- Pros, cons & breaking of SRP
By the end of this tutorial, you’ll not only understand the Observer Pattern — you’ll know exactly how and *when to apply it like a pro*.
Watch till the end to see how everything connects seamlessly in an actual workflow.
Connect with Aditya Tandon
00:00 Introduction to Observer Pattern
02:45 Polling Technique
05:03 Pushing Technique
08:14 UML Design
16:20 Standard Definition
17:07 YouTube Example
20:47 Code for YouTube Example
24:21 Observer breaks SRP
26:41 Real life example of Observer pattern
#ObserverPattern #DesignPatterns #SystemDesign #Java #LLD #LowLevelDesign #CodingTutorial #SoftwareEngineering
Third week for #lowleveldesign #systemdesign #8weeksLLdchallenge.
We are doing 8 weeks challenge and going to complete the whole course within the duration with quality content on Youtube. Let’s learn LLD like never before and attain advance level mastery on this subject.
Hey! Something just changed..."*
That’s the magic of the *Observer Design Pattern* — when one object changes, others are instantly notified.
In this video, we’ll cover:
- What is the Observer Design Pattern?
- Real-world use cases (like notification systems, event listeners)
- Clean C++ implementation step-by-step
- How to use it in real projects like YouTube
- Pros, cons & breaking of SRP
By the end of this tutorial, you’ll not only understand the Observer Pattern — you’ll know exactly how and *when to apply it like a pro*.
Watch till the end to see how everything connects seamlessly in an actual workflow.
Connect with Aditya Tandon
00:00 Introduction to Observer Pattern
02:45 Polling Technique
05:03 Pushing Technique
08:14 UML Design
16:20 Standard Definition
17:07 YouTube Example
20:47 Code for YouTube Example
24:21 Observer breaks SRP
26:41 Real life example of Observer pattern
#ObserverPattern #DesignPatterns #SystemDesign #Java #LLD #LowLevelDesign #CodingTutorial #SoftwareEngineering
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