Low Level System Design Course

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Low Level System Design Course

Week 1

Principles, OOPs, and Design Patterns

OOPs
DRY & KISS Principles
SOLID Principles in Detail
Class UML Diagram
Factory Design Pattern
Abstract Factory Pattern

Week 2

Creational & Behavioral design patterns

Singleton Design Pattern
Builder Design Pattern
Prototype Design Pattern
Observer Design Pattern
Command Design Pattern
Chain of Responsibility Design Pattern
Iterator Design Pattern

Week 3

Behavioral & Structural design patterns

Strategy Design Pattern
Template Design Pattern
Adapter Design Pattern
Decorator Design Pattern
Bridge Design Pattern
Composite Design Pattern
Proxy Design Pattern
Facade Design Pattern

Week 4

System design examples

System Requirement Analysis
IRCTC Design
Chess Design
Elevator Design

Week 5

Revision and preparation

Recommendation System Design
Meeting Scheduler Design
LLD Interview Tips

Testimonials

We've a large community of talents

Voices of Delight: Discover what our students say about their learning journey. Real stories, real satisfaction—explore testimonials that reflect the quality, dedication, and excellence we strive to deliver.

Arushi Kalra

Arushi Kalra

Associate Software Engineer II

Optum

The course was very well structured, providing a comprehensive and in-depth exploration of all relevant topics. Keerti's way of teaching is awesome. I really liked how she focuses on 'what problem does this design pattern solve' followed by naming it which makes it easier to apply in bigger LLD problems. This methodical methodology significantly enhanced my ability to apply these patterns effectively to complex low-level design challenges. The classes were not only informative but also incredibly engaging, fostering a positive and inspiring learning environment. I felt supported and encouraged to ask questions and actively participate which deepened my understanding. Thank you Keerti for creating such a valuable course.

Sumit Nagdeo

Sumit Nagdeo

Senior software engineer

Analog Devices

I attended the LLD live classes and Keerti demonstrated incredible patience in addressing all of our doubts. She explained every topic thoroughly, ensuring we truly understood the material. Her dedication to making us better software engineers was truly commendable. While many students might have joined the classes primarily to prepare for LLD interviews, Keerti focused on deep understanding rather than rote memorization which made the learning experience exceptionally valuable.

Anand M cherian

Anand M cherian

QA engineer

YOUGotaGift

It is said that the best teacher can explain a complex topic to anyone who does not even have a clue of what that topic is. This course has been exactly that for me. I am a QA engineer looking to switch to software development. I didn't have a clue about system design. I haven't even built an application on my own. I just knew JAVA and OOPS. That was my knowledge coming into this course. But Keerti does a marvelous job of explaining concepts so well that even a complete beginner like me can easily understand. The magic is that the cohort also contains seasoned developers with more than 5 or 8 years of experience, and even they learn something new from the class. Keerti's classes are so well structured, and the quality level is something to be appreciated. I had always heard that LLD is a bit tough and advanced, but now everything seems so simple. I feel grateful to have found this course and enrolled in it. Thank you, Keerti. Money well spent.

Amruth Lakkavaram

Amruth Lakkavaram

SDE III

Zendrive

My understanding of low level design has always been a little patchy and broken. I was able to manage my work with the knowledge I had, I have been using some design patterns too without knowing the names of those. But I didn't have the best solutions to some problems which I don't encounter often. I tried to learn design patterns from books earlier, although the books were great, it couldn't quite give me the boost that I needed. Enter this course - The concepts were explained in a great detail, with a detailed explanation of why, how, where and when. Course content is really good but what stands out from rest of the courses is their passion to really help you with the knowledge and the support that they offer through Discord. They always ensure that all your doubts are cleared, be it in the classroom or be it in Discord. They will reply to all your doubts and questions. They won't leave you (in a good way) until you are clear with whatever you had doubts about.

Kapil Kumar Yadav

Kapil Kumar Yadav

R&D Engineer

Tejas Networks

Educosys LLD course helped me to understand Design Principles and Design Patterns Properly with the help of real time systems. It was a Live course still concise and to the point. It started with the design principles discussion, then understanding class relationships with help of UML Diagrams, followed by design patterns and their use case. Every Design Pattern discussion started with Why we need it, its usecases and its implementation. With every class, we used to get better thought process about each and every design pattern and following SOLID Principles and while discussing real systems, we were able to identify and utilise the use case of it. I mostly prefer Live classes, because it leads to good discussion, so will recommend this course, if someone wants to increase his/her understanding of Low Level Design. By completing this course, my understanding of LLD has been increased. The instructor knows how to teach very well and drives the meaningful discussions throughout the course, which helped me to increase my understanding of systems.

Dhanusha Bhandarkar

Dhanusha Bhandarkar

SDE-3

Walmart

Thanks keerti for teaching us LLD so well, I watched many videos in YouTube but, the way of approaching the problem and breaking down the problem into small sub problems and coming up with the final design is the best way I came across so far. I am more confident now in creating any design.

Shivangi Gulati

Shivangi Gulati

Software Developer

Amdocs

Before this course , I had never imagined that I can reach a stage where I can start thinking about large scale systems from a very granular aspect but this course changed my opinion on how to think about large scale systems. I like the patience with which all the queries were handled and how we discussed real life examples to see how systems are built!! I have taken a lot of courses where I had started to lose interest in the middle of the course , but something about this course is different. Apart from the interactive discussions and thinking on the fly on how the big systems can be built , this course has given me a new found confidence on my abilities as a software developer. Design patterns has always been a scary topic to me and I thought there would never come a stage where I can start thinking about systems in terms of these patterns , but I was so wrong . This is not the type of course where once you have paid the money , it is upto you only to be motivated and keep learning. Keerti has motivated us in beginning of each week and really it helped to have this type of community and teacher as your backbone. Thank you so much keerti, I really liked learning from you.

Meenakshi Kathiresan

Meenakshi Kathiresan

Software Engineer

Light Pong

Highly recommended for someone looking to learn LLD. This course definitely has much more value than following an online course or youtube lectures. The community and discussions kept us on track. Special shout out to Keerti for taking every student seriously, giving personalized attention and considering every feedback!

Nishima Pasricha

Nishima Pasricha

Senior Software Engineer

Airtel Digital

This course has exceeded my expectations, delving into the intricacies of the topic with great depth and clarity. The continuous support and prompt handling of feedback have truly made this learning journey a standout experience for me. The course is fully structured and the live classes are very engaging.

Luv Suneja

Luv Suneja

Data Scientist

Aramex

Keerti has found a great format to help busy professionals to upskil. Unlike MOOCs, her classes are engaging, fun and push us to stretch our abilities. I really liked the examples in the course. Keerti's unique approach to teaching, combining live, interactive cohort-based courses, not only kept the learning process engaging but also kept motivation high throughout.

Prerna Kumari

Prerna Kumari

Software Technologist

Philips

I realised during the course that she is so encouraging and motivating person. The definition of a teacher is that even a weakest student should be able to understand and u make that happen. In the course there were students as well and she incorporated their needs as well as the seniors requirement that was incredible. This is my first course but still was able to engage all the people, that is great. I like the dedication with which she teaches so that each one can understand and if there is any doubt by anyone, she repeats it so many times. And we eventually get it into our head. It can be a fresher or experienced person.

Subhajit Ghosh

Subhajit Ghosh

Software Engineer

SentientGeeks

It might seem at the beginning that these LLD and HLD courses are for experienced engineers or for those who are working at a big company. But speaking from my own experience, this thought process is miles away from the truth. Learning LLD will upgrade your code quality exponentially and HLD will give you a better concept of the whole product and how it operates at scale. The LLD and HLD courses have drastically changed my way of approaching a solution and I'm grateful to be a part of the learning process.

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