iCode

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Welcome to iCode  🎥 Here you’ll find videos on iOS app development, backend engineering, and system design — explained with clarity and real-world examples. iOS Development: Swift, Xcode, UIKit/SwiftUI, live coding, interview prep, and the latest updates from Apple. Backend & System Design: Servers, APIs, databases, caching, scalability, and distributed systems — with deep dives into sharding, replication, consensus algorithms, eventual consistency, and fault tolerance. Learn by Doing: Every video balances theory + implementation, so you not only understand the concept but also see how it’s applied. Whether you’re a mobile developer curious about backend, a software engineer preparing for system design interviews, or someone who simply wants to understand how large-scale systems work — you’ll find practical, in-depth, and engaging content here. 📅 New videos every Sunday.

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Still Using MVVM in SwiftUI? Here’s the Cleaner MVI Approach You Need to Know

Still Using MVVM in SwiftUI? Here’s the Cleaner MVI Approach You Need to Know iCode

4.5K views - 8 months ago

Why Redis, Nginx & Netflix Use a Single Thread to Handle Millions of Requests

Why Redis, Nginx & Netflix Use a Single Thread to Handle Millions of Requests iCode

2.2K views - 9 months ago

Why You Can’t Have It All 🚫 | CAP & PACELC Theorem Explained with Live Demo

Why You Can’t Have It All 🚫 | CAP & PACELC Theorem Explained with Live Demo iCode

607 views - 10 months ago

How Netflix Reduced Connections by 10x | Van Der Corput Explained in Consistent Hashing

How Netflix Reduced Connections by 10x | Van Der Corput Explained in Consistent Hashing iCode

548 views - 10 months ago

Consistent Hashing in Distributed Systems | Easy Explanation + Demo

Consistent Hashing in Distributed Systems | Easy Explanation + Demo iCode

910 views - 10 months ago

Stop Misusing HTTP Status Codes (Do This Instead)

Stop Misusing HTTP Status Codes (Do This Instead) iCode

669 views - 10 months ago

Backend Basics Explained | The Only Video You Need

Backend Basics Explained | The Only Video You Need iCode

3.1K views - 10 months ago

⁠Intercept, Record & Mock iOS API Traffic: Complete Guide

⁠Intercept, Record & Mock iOS API Traffic: Complete Guide iCode

2.6K views - 1 year ago

Comparing Nil Coalescing and If-Let in Swift: Performance Analysis

Comparing Nil Coalescing and If-Let in Swift: Performance Analysis iCode

1.8K views - 2 years ago

Provisioning Profiles and Certificates | What, Why and How Explained

Provisioning Profiles and Certificates | What, Why and How Explained iCode

21K views - 2 years ago

iOS Developer Mock Interview | Hiring Manager Round (Round-4)

iOS Developer Mock Interview | Hiring Manager Round (Round-4) iCode

7.2K views - 2 years ago

iOS Developer Mock Interview | System Design Round (Round-3)

iOS Developer Mock Interview | System Design Round (Round-3) iCode

10K views - 2 years ago

iOS Developer Mock Interview | Tech Round (Round-2)

iOS Developer Mock Interview | Tech Round (Round-2) iCode

24K views - 2 years ago

iOS Developer Mock Interview | Exploration Round

iOS Developer Mock Interview | Exploration Round iCode

20K views - 2 years ago

TipKit - Tooltips/Coachmarks for iOS Apps

TipKit - Tooltips/Coachmarks for iOS Apps iCode

2.9K views - 2 years ago

Universal Links and Apple App Site Association (AASA) - Implementation & Debugging

Universal Links and Apple App Site Association (AASA) - Implementation & Debugging iCode

47K views - 3 years ago

A/B Testing in iOS | Swift | Firebase

A/B Testing in iOS | Swift | Firebase iCode

6K views - 3 years ago

Cred x Swift India Meet-up Highlights

Cred x Swift India Meet-up Highlights iCode

3.5K views - 3 years ago

Interview Questions on Concurrency, GCD, Operation Queue | Swift (Mastering Concurrency in iOS - 6)

Interview Questions on Concurrency, GCD, Operation Queue | Swift (Mastering Concurrency in iOS - 6) iCode

24K views - 3 years ago

Singleton - Good or Bad?

Singleton - Good or Bad? iCode

12K views - 3 years ago

Mastering Concurrency in iOS - Part 5 (Operations and Operation Queue)

Mastering Concurrency in iOS - Part 5 (Operations and Operation Queue) iCode

17K views - 3 years ago

Mastering Concurrency in iOS - Part 4 (Dispatch Barrier, Semaphore, Work Item Flags)

Mastering Concurrency in iOS - Part 4 (Dispatch Barrier, Semaphore, Work Item Flags) iCode

17K views - 3 years ago

Mastering Concurrency in iOS - Part 3 (Dispatch Group, Dispatch Work Item)

Mastering Concurrency in iOS - Part 3 (Dispatch Group, Dispatch Work Item) iCode

21K views - 3 years ago

Mastering Concurrency in iOS - Part 2 (Dispatch Queues, Quality of Service, Attributes)

Mastering Concurrency in iOS - Part 2 (Dispatch Queues, Quality of Service, Attributes) iCode

34K views - 3 years ago

Mastering Concurrency in iOS - Part 1 (Concurrency, GCD Basics)

Mastering Concurrency in iOS - Part 1 (Concurrency, GCD Basics) iCode

58K views - 4 years ago

Common Mistake while using @Published | RunLoop.Main vs DispatchQueue.Main | Combine

Common Mistake while using @Published | RunLoop.Main vs DispatchQueue.Main | Combine iCode

6.3K views - 4 years ago

System Design Round for Mobile App Developers | Analytics Manager

System Design Round for Mobile App Developers | Analytics Manager iCode

25K views - 4 years ago

Subject in Combine | PassthroughSubject | CurrentValueSubject | Swift

Subject in Combine | PassthroughSubject | CurrentValueSubject | Swift iCode

9.4K views - 4 years ago

UISheetPresentationController | Bottom Sheets in iOS App | Swift

UISheetPresentationController | Bottom Sheets in iOS App | Swift iCode

16K views - 4 years ago

Zip Operator in Combine | Swift | Alternative to Dispatch Group

Zip Operator in Combine | Swift | Alternative to Dispatch Group iCode

5.2K views - 4 years ago

Combine Latest Operator | Combine Framework | Swift | iOS

Combine Latest Operator | Combine Framework | Swift | iOS iCode

10K views - 4 years ago

Mastering Bezier Curves in iOS | Swift

Mastering Bezier Curves in iOS | Swift iCode

10K views - 4 years ago

Learn Git with Git Command Explorer | Easiest Way To Learn Git

Learn Git with Git Command Explorer | Easiest Way To Learn Git iCode

2.6K views - 4 years ago

Interview Questions on Struct vs Class vs Actor | iOS Interview Questions | Swift 5.5

Interview Questions on Struct vs Class vs Actor | iOS Interview Questions | Swift 5.5 iCode

41K views - 4 years ago

Concurrency using Actors | Swift 5.5 | Async/Await | Data Race

Concurrency using Actors | Swift 5.5 | Async/Await | Data Race iCode

27K views - 4 years ago

Opaque Type vs Protocol in Swift | Associated Type | Generics | iOS

Opaque Type vs Protocol in Swift | Associated Type | Generics | iOS iCode

30K views - 4 years ago

How to Review Code | Best Practices | Pull/Merge Requests | iOS | Swift | Checklist

How to Review Code | Best Practices | Pull/Merge Requests | iOS | Swift | Checklist iCode

15K views - 4 years ago

MVVM + Dependency Injection in Swift | Unit Testing | iOS

MVVM + Dependency Injection in Swift | Unit Testing | iOS iCode

51K views - 4 years ago

Man in The Middle Attack and SSLPinning | Ethical Hacking | Charles | iOS | Swift | Xcode

Man in The Middle Attack and SSLPinning | Ethical Hacking | Charles | iOS | Swift | Xcode iCode

42K views - 4 years ago

Observer Design Pattern | Behavioural Pattern | Swift | Interview Question

Observer Design Pattern | Behavioural Pattern | Swift | Interview Question iCode

11K views - 4 years ago

Design Patterns | Factory Design Pattern | What, Why and How

Design Patterns | Factory Design Pattern | What, Why and How iCode

25K views - 4 years ago

Combine Tutorial | API Call using Future, DataTaskPublisher | Swift | Xcode

Combine Tutorial | API Call using Future, DataTaskPublisher | Swift | Xcode iCode

53K views - 4 years ago

How to Write Testable Code with Dependency Injection | Swift | Xcode | TDD

How to Write Testable Code with Dependency Injection | Swift | Xcode | TDD iCode

17K views - 4 years ago

System Design Round (iOS) - Mock Interview | Mobile App Development

System Design Round (iOS) - Mock Interview | Mobile App Development iCode

49K views - 4 years ago

Why Your Resume Is Rejected? | 'NO' from Product Based Companies

Why Your Resume Is Rejected? | 'NO' from Product Based Companies iCode

4.3K views - 5 years ago

iOS Interview Questions | Mock Interview | Tips & Tricks | Swift

iOS Interview Questions | Mock Interview | Tips & Tricks | Swift iCode

84K views - 5 years ago

Server Side Programming In Swift | Backend Development | Swift | Perfect | Xcode

Server Side Programming In Swift | Backend Development | Swift | Perfect | Xcode iCode

13K views - 5 years ago

Everything you need to know about Cocoapods | Swift | Xcode | iOS

Everything you need to know about Cocoapods | Swift | Xcode | iOS iCode

21K views - 5 years ago

Understanding Provisioning Profiles and Certificates | Xcode | iOS App Development

Understanding Provisioning Profiles and Certificates | Xcode | iOS App Development iCode

76K views - 5 years ago

Test Push Notifications on Simulator | macOS App | Swift | Xcode

Test Push Notifications on Simulator | macOS App | Swift | Xcode iCode

2.6K views - 5 years ago

Reduce Xcode Build Time | Xcode | iOS | Swift

Reduce Xcode Build Time | Xcode | iOS | Swift iCode

7.5K views - 5 years ago

Debug/Inspect Web View in iOS Apps | Xcode | Web View Inspector | Web Apps

Debug/Inspect Web View in iOS Apps | Xcode | Web View Inspector | Web Apps iCode

23K views - 5 years ago

Build Instagram like UI using Compositional Layout | Swift | Xcode

Build Instagram like UI using Compositional Layout | Swift | Xcode iCode

9.2K views - 5 years ago

First tvOS app by an iOS Developer | Apple TV | Swift | Xcode

First tvOS app by an iOS Developer | Apple TV | Swift | Xcode iCode

13K views - 5 years ago

Improve Debugging Skills | iOS | Swift/Obj C | Xcode

Improve Debugging Skills | iOS | Swift/Obj C | Xcode iCode

20K views - 5 years ago

Copy on Write in Swift | iOS

Copy on Write in Swift | iOS iCode

9K views - 5 years ago

Method Dispatch in Swift | Static | Dynamic | Message

Method Dispatch in Swift | Static | Dynamic | Message iCode

28K views - 5 years ago

Inheritance vs Interfaces (Protocols) In Swift

Inheritance vs Interfaces (Protocols) In Swift iCode

17K views - 5 years ago

Main Thread, Sync vs Async and Deadlocks in Swift

Main Thread, Sync vs Async and Deadlocks in Swift iCode

15K views - 5 years ago

Lazy Views in Swift UI

Lazy Views in Swift UI iCode

2.7K views - 5 years ago