🚀 Vending Machine System Design – LLD for Interviews & Projects 🧑‍💻

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✨ 00:00 - Introduction 00:28 - Vending Machine Design Problem Intro 00:48 - Interview Plan and Process Structure 01:27 - What is a Vending Machine 02:47 - Products and Inventory in Vending Machine 04:23 - Vending Machine States Overview 05:11 - Interview Setting: How to Approach 06:59 - Inaction of the Process Explained 08:06 - Core Operations Summary 09:03 - Key Interview Questions to Ask 10:25 - Handling State Transitions 11:06 - Entities Breakdown 13:04 - Design Patterns Overview 14:32 - Applying State Pattern 17:06 - Focus on Key Design Patterns 17:12 - Starting Class Diagram 17:58 - State, Context, and Entities 19:36 - State Transition Flow Diagram 22:16 - Handling Out of Stock and Error States 23:09 - Class and Type Definitions 24:51 - Inventory Methods 25:59 - State Design Pattern Classes 27:05 - Vending Machine Context Setup 29:02 - State Advancing Logic 30:05 - Defensive Coding Practices 31:08 - Inventory and Item Update Methods 32:22 - Concrete States Implementation 34:42 - Main Function Structure 36:34 - Adding Payment Strategy 37:08 - Payment Strategy and Implementations 38:29 - Final Integration and Changes 39:10 - Final Recap and Design Extensibility ✨ Hashtags ✨ #programming #Interviews #leetcode #faang #maang #datastructures #algorithms #low-level-design #lld-by-aryan #systemdesigninterview #systemdesign #systemdesignmockinterview #lowleveldesign #vendingmachine #systemdesignforbeginners #designvendingmachine #systemdesigninterviewquestion #systemdesigninterviewquestions #vendingmachinesystemdesign #interviewquestionsforattendantvendingmachine #systemdesigninterviews #objectorienteddesign #designpatterns #lowleveldesigninterview #amazonsystemdesigninterview #lowleveldesigninterviewquestions