🧵 Concurrency & Multithreading COMPLETE Crash Course | All you need to know for any LLD Rounds ‼️

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 & Insider Blueprint for LLD Interviews
0:28 – Threads & Runnable Interface
1:44 – Topics: Threads, Runnable, Callable, Thread Pool
2:28 – Executors, Synchronization, Communication
3:09 – Why Java for Concurrency
4:01 – Concurrency in LLD Systems
5:02 – Key Concurrency Concepts
6:02 – What is a Thread? (Cookie Analogy)
8:01 – Multi-core & Concurrency
9:22 – Process vs Thread
13:04 – Shared Memory & Thread Advantage
15:09 – Threads vs Processes
17:00 – Fault Tolerance
19:55 – When to Use Threads vs Processes
22:03 – Real-World Thread Examples
24:03 – Thread Features
25:27 – Creating Threads: Thread vs Runnable
33:02 – Why Prefer Runnable
39:11 – Callable Interface
43:04 – Futures Simplified
47:16 – Runnable vs Thread vs Callable
51:00 – Multi-threading Best Practices
52:00 – start() vs run()
55:55 – sleep() vs wait()
1:03:00 – notify() vs notifyAll()
1:13:49 – Summary
1:14:00 – Thread Lifecycle & Thread Pool
1:23:22 – What is a Thread Pool?
1:28:07 – Thread Pool Benefits
1:32:02 – Cached Thread Pool
1:36:27 – Preventing Thread Leaks
1:38:06 – Choosing Between Thread Pools
1:41:18 – ThreadPoolExecutor Deep Dive
1:45:00 – shutdown() vs shutdownNow()
1:46:55 – Thread Starvation
1:49:02 – Fair Scheduling
1:57:55 – Conclusion: Thread Pools in Production
2:05:18 – Intro to Thread Executors
2:07:44 – Task Scheduling
2:10:04 – execute() vs submit()
2:13:13 – Full Control with ThreadPoolExecutor
2:17:10 – Key ExecutorService Methods
2:20:14 – schedule() Variants
2:24:07 – Interview Q: execute vs submit
2:29:19 – Exception Handling in Executors
2:32:03 – Thread Synchronization Overview
2:36:05 – Solving Race Conditions
2:45:42 – Synchronized Blocks & Fine-Grained Control
2:48:48 – volatile Keyword
2:55:11 – Atomic Variables
2:59:37 – Sync vs Volatile vs Atomic Summary
3:03:22 – Thread Communication Intro
3:04:50 – wait() & notify() Explained
3:09:50 – NotifyAll Walkthrough
3:19:02 – Producer-Consumer Problem
3:33:03 – Interview Importance
3:34:21 – Thread Communication Summary
3:34:56 – Locks & Their Types
3:57:34 - Semaphore
4:36:32 - Java Concurrent Collections
5:29:36 - Future and CompletableFuture
6:10:11 - Print Zero Even Odd Problem
6:20:16 - Fizz Buzz Multithreaded Problem
6:31:47 - Design Bounded Blocking Queue Problem
6:51:20 - The Dining Philosophers Problem
7:08:28 - Multithreaded Web Crawler Problem

✨ Hashtags ✨
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