Low Level Design + MultiThreading Course - Singleton Design Pattern in Java 🔁 | Efficient & Thread-Safe Object Creation Explained🚀

Article - https://codewitharyan.com/system-design/low-level-design Structured DSA (Basics to Advanced) Practice - https://codewitharyan.com/cwa-sheet/practice-problems My Uber Interview Experience - https://youtu.be/VGYJIX5yl74 My Coinbase Interview Experience - https://youtu.be/IjOC18b_dCw My American Express Inteview Experience - https://youtu.be/c3UhYefhnqk My JP Morgan & Chase Interview Experience - https://youtu.be/-jacTpY57no ..... more coming soon (along with LLD course on Second Channel) Most Frequently asked questions based on Leetcode Premium - https://codewitharyan.com/cwa-sheet/aryan-dsa-master-sheet LLD Syllabus which we gonna cover - https://codewitharyan.com/system-design/low-level-design Let's Connect: Main Channel for DSA & Live Streams - https://www.youtube.com/@ARYANMITTAL X Twitter : https://x.com/aryan_mittal007 📱Discord (Join Community) : https://discord.gg/vwUAz2pEHZ 📝Linkedin (About me): https://www.linkedin.com/in/aryan-mittal-0077 📸 Instagram: https://www.instagram.com/codewitharyanbhai 📱Telegram : https://t.me/aryan_mittal_group 🤖 Github: https://github.com/aryan-0077 ✨ Timelines✨ 0:00 – Intro: Cracking System Design Interviews 0:26 – What is the Singleton Design Pattern? 0:36 – Why Do We Need Singleton? 1:08 – Real-World Examples: Logging, DB Connections & More 2:29 – The Problem: Multiple Instances Creating Chaos! 3:45 – Issues with Multiple Instances: Performance & Consistency 5:26 – The Solution: Implementing a Basic Singleton in Java 7:30 – Making the Constructor Private: Why & How? 8:50 – Thread Safety Issue: The Hidden Problem! 10:40 – The Multi-Threading Trap: How It Breaks Singleton 12:18 – Fixing It: Using Synchronized Blocks 14:00 – The Performance Problem with Synchronization 15:08 – The Ultimate Fix: Double-Checked Locking 16:49 – Why This is the Best Singleton Implementation? 17:50 – Key Takeaways & When to Use Singleton 18:38 – Wrap-Up & Next Steps in Design Patterns ✨ Hashtags ✨ #programming #Interviews #leetcode #faang #maang #datastructures #algorithms #low-level-design #lld-by-aryan