System design interview candidates
Strengthen your System Design foundation with clear visual explanations and practical context.
System Design
Earn ₹12–45 LPAwith system design skills
Crack system design interviews with 122 animated, voice-explained videos: scaling, caching, databases, distributed systems and 41 design problems.
₹299₹1,99985% off
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5,895+ learners enrolled
One-time payment. 3 months access to every video in this course.
4.95,895+ ratings
All LevelSkill level
122 videos32+ hours
CertificateShareable on finish
Course preview
See how the lessons work before you buy
Watch free demo lectures from the course to see the visual, voice-explained teaching before enrolling.
Free demo lectures8 videos
Career outcomes
Build skills that open doors to real roles
Use your System Design knowledge in portfolio projects, interviews, and practical work for roles such as these.
01
Senior Software Engineer
Entry level02
Backend Engineer
Mid level03
Software Architect
Senior trackAbout this system design course
This System Design course turns important concepts into clear visual explanations you can learn in short sessions and revisit whenever you need a refresher.
Work through 122 videos at your own pace, apply each idea through structured examples and assignments, track your progress, and earn a certificate when you finish.
Skills you will learn
Scaling, caching, and databases
Build practical understanding through visual explanations, guided examples, and focused practice.
Distributed systems and reliability
Build practical understanding through visual explanations, guided examples, and focused practice.
HLD case studies like WhatsApp and Uber
Build practical understanding through visual explanations, guided examples, and focused practice.
LLD, design patterns, and mock interviews
Build practical understanding through visual explanations, guided examples, and focused practice.
Who this course is for
Backend and platform engineers
Fill knowledge gaps and apply System Design concepts more confidently in practical work.
Technical leads
Use structured lessons and focused practice to support projects, interviews, and career growth.
Topics
Scaling, caching, and databasesDistributed systems and reliabilityHLD case studies like WhatsApp and UberLLD, design patterns, and mock interviewsSystem Design fundamentalsPractical examplesDebugging techniquesProduction best practicesInterview preparation
Syllabus
What is inside the course
Review the System Design curriculum module by module, from core concepts through problem walkthroughs and mock interviews.
01Getting Started4 lessons • 42 min
Understand what system design is, how the web works, and a repeatable framework for any design round.
What is System Design8:07
How the Web Works12:47
Clients, Servers and APIs10:10
The System Design Framework11:18
02Back-of-the-Envelope Estimation3 lessons • 30 min
Estimate QPS, storage, bandwidth and availability with quick back-of-the-envelope math.
Numbers Every Engineer Should Know8:57
Estimating QPS, Storage and Bandwidth10:56
Availability Nines, SLA, SLO and SLI10:14
03Networking and APIs6 lessons • 1h 27m
Know the network and API building blocks: TCP/UDP, DNS, HTTP, REST, gRPC and real-time options.
IP, Ports, TCP and UDP13:30
DNS Records, TTL and Routing12:57
HTTP Versions, HTTPS and TLS17:35
REST, GraphQL and gRPC14:30
API Design Best Practices16:31
Real-Time Communication11:58
04Scaling Basics4 lessons • 50 min
Scale from one server to millions of users with load balancers, proxies and stateless services.
From One Server to a Million Users13:19
Vertical vs Horizontal Scaling10:24
Load Balancers14:23
Reverse Proxy and API Gateway11:27
05Caching and CDNs5 lessons • 1 problem • 1h 31m
Pick the right caching strategy, handle cache failures, and use CDNs; then design a distributed cache.
Why Cache, and Where10:04
Caching Strategies12:38
Eviction and Invalidation15:04
Cache Failures, Redis and Memcached18:21
CDNs12:34
Design a Distributed Cache22:05
06Databases5 lessons • 1h 11m
Choose between SQL and NoSQL, and understand indexes, transactions and isolation levels.
SQL vs NoSQL and Data Modeling15:06
Indexes, B-Trees and LSM Trees13:38
Transactions, ACID and Isolation Levels13:20
NoSQL Families15:06
Choosing the Right Database14:15
07Scaling Databases5 lessons • 2 problems • 1h 43m
Scale databases with replication, sharding and consistent hashing; design an ID generator and URL shortener.
Replication13:19
Partitioning and Sharding12:05
Consistent Hashing10:59
Read Scaling9:37
Unique ID Generation12:27
Design a Unique ID Generator21:43
Design a URL Shortener22:23
08Async Processing and Messaging4 lessons • 2 problems • 1h 31m
Decouple services with queues, pub-sub and Kafka; design a message queue and a notification system.
Message Queues vs Pub-Sub9:07
Kafka Deep Dive13:52
Delivery Guarantees12:31
Event-Driven Architecture, Outbox and CDC10:44
Design a Distributed Message Queue22:41
Design a Notification System21:36
09Storage and Search3 lessons • 1 problem • 57 min
Store files and objects at scale and build search; design typeahead autocomplete.
Block, File and Object Storage12:05
Uploading Large Files10:48
Search and Inverted Indexes12:55
Design Search Autocomplete (Typeahead)20:54
10Distributed Systems Fundamentals6 lessons • 2 problems • 2h 05m
Reason about CAP, consistency, quorums and consensus; design a key-value store and a distributed lock.
CAP Theorem and PACELC12:43
Consistency Models13:12
Quorums and Leaderless Replication13:01
Failure Detection and Repair13:31
Time and Ordering14:14
Consensus and Leader Election14:18
Design a Key-Value Store23:46
Design a Distributed Lock20:06
11Reliability and Resilience5 lessons • 1 problem • 1h 27m
Build resilient systems with retries, circuit breakers, rate limiting and sagas; design a rate limiter.
Failure Handling - Timeouts, Retries and Backoff11:54
Circuit Breakers, Bulkheads and Backpressure12:43
Rate Limiting Algorithms13:43
Redundancy, Failover and Disaster Recovery15:01
Distributed Transactions - Two-Phase Commit and Sagas14:54
Design a Rate Limiter18:48
12Architecture Patterns4 lessons • 56 min
Compare monoliths and microservices, service communication, and batch vs stream processing.
Monolith vs Microservices13:47
Service Discovery, API Gateway and Service Mesh13:11
Service Communication and Data Ownership12:55
Batch vs Stream Processing15:44
13Production Readiness4 lessons • 1h 02m
Ship to production with observability, auth, security and safe deployments.
Observability - Logs, Metrics and Traces15:08
Authentication and Authorization15:56
Security - Encryption, Secrets and DDoS Protection16:36
Deployment - Containers, Kubernetes and Safe Releases14:27
14Classic Designs1 lesson • 3 problems • 1h 16m
Use probabilistic data structures; design a web crawler, top-K trending and an online judge.
Probabilistic Data Structures14:40
Design a Web Crawler21:38
Design Top-K Trending (Heavy Hitters)20:21
Design an Online Judge (LeetCode)19:22
15Social and Feeds1 lesson • 3 problems • 1h 09m
Choose push vs pull feeds; design Twitter's news feed, Instagram and a real-time leaderboard.
Fan-out - Push vs Pull Feeds12:08
Design a News Feed (Twitter)18:41
Design Instagram19:24
Design a Real-Time Leaderboard19:04
16Messaging and Collaboration1 lesson • 3 problems • 1h 15m
Handle real-time messaging and collaborative editing; design WhatsApp and Google Docs.
Collaborative Editing - OT vs CRDTs15:48
Design WhatsApp18:57
Design Live Comments and Presence19:04
Design Google Docs (Collaborative Editing)20:52
17Media and Files1 lesson • 2 problems • 52 min
Build video pipelines and file sync; design YouTube and Dropbox.
The Video Pipeline15:01
Design YouTube (Video Streaming)17:35
Design Dropbox (File Sync)19:26
18Location-Based Systems1 lesson • 3 problems • 1h 11m
Index location data; design Yelp, Uber and a food delivery app.
Geospatial Indexing13:46
Design a Proximity Service (Yelp)20:12
Design Uber (Ride Matching)17:33
Design Swiggy-Zomato (Food Delivery)19:20
19Commerce and Payments1 lesson • 4 problems • 1h 33m
Handle contention and money safely; design ticket booking, payments, flash sales and a stock exchange.
Contention and Money14:47
Design BookMyShow (Ticket Booking)18:20
Design a Payment System19:05
Design a Flash Sale (Inventory under Contention)18:59
Design a Stock Exchange (Order Matching)22:13
20Infrastructure and Data Systems1 lesson • 4 problems • 1h 41m
Separate OLTP and OLAP; design a job scheduler, metrics system, ad click aggregation and S3.
OLTP vs OLAP15:30
Design a Distributed Job Scheduler21:49
Design a Metrics and Monitoring System23:07
Design Ad Click Aggregation18:57
Design Object Storage (S3)21:52
21AI and ML Systems3 lessons • 2 problems • 1h 33m
Use embeddings, vector databases and LLMs; design ChatGPT serving and a recommendation system.
Embeddings and Vector Databases17:04
Building LLM Applications17:37
ML Systems15:09
Design ChatGPT (LLM Chat Serving)21:59
Design a Recommendation System21:28
22OOP and Design Principles4 lessons • 56 min
Apply OOP, SOLID and UML, and know how to approach a low-level design round.
OOP for Design13:24
SOLID Principles11:57
UML Class and Sequence Diagrams14:07
How to Approach an LLD Round16:18
23Design Patterns6 lessons • 1h 21m
Use creational, structural, behavioral and concurrency patterns in real code.
Creational Patterns12:35
Structural Patterns13:34
Behavioral Patterns I12:57
Behavioral Patterns II13:55
Concurrency Basics14:42
Concurrency Patterns13:45
24LLD Case Studies8 problems • 2h 27m
Solve classic LLD rounds: parking lot, elevator, Splitwise, vending machine and more.
Design a Parking Lot15:33
Design Tic-Tac-Toe15:08
Design a Vending Machine18:36
Design an Elevator System17:08
Design Splitwise18:53
Design an In-Memory Cache with Pluggable Eviction19:34
Design Movie Ticket Booking (LLD)18:27
Design a Logging Framework24:06
25Interview Preparation3 lessons • 1h 10m
Drive the interview with a cheat sheet and practise with three full mock interviews.
The System Design Cheat Sheet17:58
How to Drive the Interview17:26
Three Full Mock Interviews34:53
25Modules
122Videos
81Lessons
41Problems
Combos
Learn a whole skill, not one topic
Courses grouped into a path, in the order we would teach them. One payment, and every course in the set gets 3 months of access per course in the set.
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DevOps & Cloud Engineer Combo
Automate with Python, ship with DevOps and design systems that scale.
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Longer access with more courses (3 courses = 7 months each)A certificate for each course in the combo
Course certificate
Showcase your skills with a course certificate
Complete every System Design lesson to earn a verified AllCSVideos certificate that demonstrates your commitment and newly developed skills.
Verified proof of completion
Receive a unique certificate ID that confirms your completed course.
Ready to share
Add your achievement to LinkedIn, your portfolio, resume, or social profile.
Accessible whenever you need it
Return to your certificate and learning record from your AllCSVideos account.
Testimonials
What learners say after finishing
Real learning stories from people building practical skills with visual notes.
4.8/5
10,000+ verified public & course reviews
Learner story
“The visual notes finally made React hooks click for me. I had watched several tutorials before, but this was the first time the concepts felt connected. I finished the course during one week of train rides.”
Learner story
“I used one DSA lesson each morning and became much more confident explaining solutions in interviews.”
Learner story
“Short pages, no filler. I stopped abandoning courses halfway once I switched to reading instead of watching.”
Learner story
“The Python examples went straight into my project the same afternoon. Clear and practical from the first lesson.”
Learner story
“I keep the SQL notes open while I work. Joins and window functions are easier to recall because I can find the exact visual explanation in seconds. It has become a daily reference, not just a course I completed.”
Learner story
“My approach to system design became much more structured within a month of finishing the course.”
Learner story
“The TypeScript course helped me understand the reason behind the types, not only the syntax. My project code feels much safer now.”
Learner story
“I came for Next.js and stayed for the visual explanations. Server and client components finally make sense without replaying long videos.”
Learner story
“The Node.js course connected routing, validation, security, and deployment into one clear mental model. I now understand how the pieces fit together in a production API.”
Learner story
“Data Analytics felt much less intimidating once every workflow was broken into short visual steps. I could practice one idea at a time.”
Learner story
“The DevOps notes gave me a practical path from containers to delivery pipelines. I return to the diagrams whenever I need to explain a workflow to my team.”
Learner story
“Generative AI finally felt concrete. The sections on prompts, RAG, and evaluation helped me move from experiments to a project I could actually demonstrate.”
Are these video courses?
Yes. Every lesson is a short animated video with voice explanation, so you can watch, pause, and rewatch any concept whenever you need a quick explanation.
How long does one course take to finish?
The DSA with C++ course has 218 videos with more than 25 hours of content, the DSA with Java course has 218 videos with more than 26 hours, the DSA with Python course has 218 videos with more than 26 hours, the System Design course has 122 videos with more than 32 hours, the Spring Boot course has 105 videos with more than 24 hours, the Generative AI course has 98 videos with more than 25 hours, the DevOps course has 110 videos with more than 32 hours, the Python course has 120 videos with more than 34 hours, and the React course has 114 videos with more than 24 hours. Most lessons take under fifteen minutes. Your completion time depends on your pace, but you can make useful progress every day.
How long do I get access?
Each purchase gives you 3 months of access. You can renew anytime for the same price. If you renew early, the new 3 months are added after your current access ends, so you lose no days.
Do I get a certificate?
Yes. You receive a certificate after completing each eligible course. It can be shared as evidence of the topics and practical skills you covered.
What skill level do I need to start?
The course begins at a beginner level and requires no previous DSA experience. Basic C++ is covered in the first module, so you can start from the beginning.
Do I keep access to my course?
You keep access for 3 months from your purchase. After that you can renew at any time, and your saved progress is waiting for you when you come back.
Do the lessons get updated?
Yes. When an important tool, technique, or standard changes, affected lessons are updated and the new version appears in your course at no extra cost.