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Mock interviews and walkthroughs from engineers and interviewers, including system design.
See all 4 steps Learn system design with Aced, step by step 40 videos in 4 steps, about 17 h 18 min of watching. Start at step 1 and move down.
All levels Beginner Intermediate Advanced
Databases 4 Traffic and limits 2 Consistency 2 Services and APIs 1
1 Start here: the basics No background needed. What the main ideas are and why they exist. 3 videos · 15 min 1.1 Database Replication Explained (in 5 Minutes) Beginner · 5 min · 116.5K views · 2023 Keeping copies of data on several machines and how they stay in step. 1.2 The Basics of Database Sharding and Partitioning in System Design Beginner · 6 min · 140.1K views · 2023 Splitting data across machines and choosing how to split it. 1.3 The Basics of Cloud Architecture Beginner · 4 min · 17.7K views · 2023 A walk through how a real product is put together: what it must do, the parts, and the trade-offs. 2 The building blocks Caches, queues, databases, load balancers: the parts every design is made of. 1 videos · 19 min 2.1 Google Software Engineering Mock Interview: Partition Equal Subset Sum Intermediate · 19 min · 7.9K views · 2022 Splitting data across machines and choosing how to split it. 3 Design whole systems (HLD) Put the blocks together for a real product, step by step. 30 videos · 11 h 52 min 3.1 Amazon System Design Interview: Design Parking Garage Intermediate · 30 min · 1.7M views · 2021 (older) Designing Interview: what it must do, the main parts, and the trade-offs. 3.2 How to Answer System Design Interview Questions (Complete Guide) Intermediate · 7 min · 685.4K views · 2023 Designing Interview Questions: what it must do, the main parts, and the trade-offs. 3.3 System Design Mock Interview: Design TikTok ft. Google TPM Intermediate · 33 min · 678.9K views · 2021 (older) Designing Mock: what it must do, the main parts, and the trade-offs. 3.4 System Design Mock Interview: Design Instagram Intermediate · 31 min · 563.8K views · 2020 (older) Designing Mock: what it must do, the main parts, and the trade-offs. 3.5 System Design Mock Interview: Design Facebook Messenger Intermediate · 15 min · 318.2K views · 2021 (older) Designing Mock: what it must do, the main parts, and the trade-offs. 3.6 System Design Interview: Design Netflix Intermediate · 28 min · 301.9K views · 2021 (older) Designing Interview: what it must do, the main parts, and the trade-offs. 3.7 System Design Mock Interview: Design a Rate Limiter (with Meta Engineering Manager) Intermediate · 23 min · 243.6K views · 2022 Designing Mock: what it must do, the main parts, and the trade-offs. 3.8 System Design Interview: Design Amazon Prime Video Intermediate · 27 min · 171.2K views · 2022 Designing Interview: what it must do, the main parts, and the trade-offs. 3.9 Design Reddit: System Design Mock Interview Intermediate · 42 min · 152.6K views · 2021 (older) Designing Reddit: what it must do, the main parts, and the trade-offs. 3.10 System Design (TPM) Mock Interview: Twitter API Intermediate · 19 min · 136.9K views · 2020 (older) How services expose and call each other's features. Show all 30 4 Go deeper Internals, trade-offs and how large systems really behave. 6 videos · 4 h 52 min 4.1 Design Google Docs | System Design Interview (with Amazon Engineer, ex-Microsoft) Advanced · 1 h 3 min · 142.2K views · 2025 Designing Google Docs: what it must do, the main parts, and the trade-offs. 4.2 Design Uber Eats | System Design Interview (with Senior Netflix Engineer, Ex-Microsoft) Advanced · 1 h 5 min · 45.2K views · 2025 Designing Uber Eats: what it must do, the main parts, and the trade-offs. 4.3 Design Ticketmaster - System Design Interview (with Senior Amazon TPM) Advanced · 51 min · 42.7K views · 2023 Designing Ticketmaster: what it must do, the main parts, and the trade-offs. 4.4 CDNs in High-Performance System Design Advanced · 5 min · 36.7K views · 2023 A walk through how a real product is put together: what it must do, the parts, and the trade-offs. 4.5 ML System Design Mock Interview - Build an ML System That Classifies Which Tweets Are Toxic Advanced · 52 min · 35.2K views · 2024 Designing Mock: what it must do, the main parts, and the trade-offs. 4.6 ML System Design Question - Create an ETA System for Maps (Full mock interview) Advanced · 56 min · 28.6K views · 2024 Designing Question: what it must do, the main parts, and the trade-offs. Order and levels are picked by us from titles and lengths. The one-line notes are ours. Every video plays from YouTube and belongs to Aced.
Aced’s own courses and series Playlists the creator put together, in the order they made them.
System Design Interview Prep A series from the creator, in the order they made it. 36 videos · 14 h 48 min 1 Design Google Docs | System Design Interview (with Amazon Engineer, ex-Microsoft) Advanced · 1 h 3 min · 142.2K views · 2025 Designing Google Docs: what it must do, the main parts, and the trade-offs. 2 Design Uber Eats | System Design Interview (with Senior Netflix Engineer, Ex-Microsoft) Advanced · 1 h 5 min · 45.2K views · 2025 Designing Uber Eats: what it must do, the main parts, and the trade-offs. 3 Design a Key-Value Store - System Design Mock Interview (with Microsoft Software Engineer) Intermediate · 37 min · 96.8K views · 2023 Designing Key: what it must do, the main parts, and the trade-offs. 4 Design Ticketmaster - System Design Interview (with Senior Amazon TPM) Advanced · 51 min · 42.7K views · 2023 Designing Ticketmaster: what it must do, the main parts, and the trade-offs. 5 Design Tinder - System Design Interview (with TikTok Senior Engineer) Intermediate · 36 min · 134.8K views · 2023 Designing Tinder: what it must do, the main parts, and the trade-offs. 6 Database Replication Explained (in 5 Minutes) Beginner · 5 min · 116.5K views · 2023 Keeping copies of data on several machines and how they stay in step. 7 Design a Distributed Message Queue - System Design Mock Interview Intermediate · 32 min · 67.2K views · 2023 Designing Distributed Message Queue: what it must do, the main parts, and the trade-offs. 8 How to Answer System Design Interview Questions (Complete Guide) Intermediate · 7 min · 685.4K views · 2023 Designing Interview Questions: what it must do, the main parts, and the trade-offs. 9 Design ChatGPT - System Design Mock Interview (with eBay EM) Intermediate · 35 min · 98.8K views · 2023 Designing ChatGPT: what it must do, the main parts, and the trade-offs. 10 Design a Hotel Booking Service - System Design Mock Interview (with eBay EM) Intermediate · 31 min · 72.9K views · 2023 Designing Hotel Booking Service: what it must do, the main parts, and the trade-offs. Show all 36 Latest uploads GOOGLE PM Interview Question: Improve Youtube’s Reccomendation Algorithm 162 views · today AI System Design Mock Interview: Design Claude Code 815 views · today META AI RPM Interview Experience 232 views · 1 day ago Top 10 Recent Big Tech SWE Interview Questions 341 views · 2 days ago Quant Dev C++ Interview Question: Implement Threadpool 2.7K views · 2 days ago MICROSOFT PM INTERN INTERVIEW LOOP 389 views · 2 days ago
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Free labor. Assignment must not solve an immediate business problem but rather a hypothetical problem that can show candidate competence.
@mehrdadfeller · 3 likes
on Anthropic PM take-home: AI raised the floor, not ceiling
Hey i just want to ask a question it may be silly so sorry but if you are using mutex which is spinlock so why you are putting thread to sleep
@vaibhavagrawal-uz1ut
on Quant Dev C++ Interview Question: Implement Threadpool
Your path · 0/40 watched Start with Database Replication Explained (in 5 Minutes) 1. The basics0/3 2. The building blocks0/1 3. Design whole systems (HLD)0/30 4. Go deeper0/6 All videos, channel names, pictures and comments belong to Aced and the people who wrote them. Videos play in YouTube’s own player and link back to the channel; nothing is copied. Numbers and comments come from YouTube and are refreshed regularly. By using them you also agree to the YouTube Terms of Service ; Google’s Privacy Policy applies. To have this page changed or removed, tell us here .
