WTF is Low-Level Design?

Shivam ChauhanShivam Chauhan
5 min read

If today I told you to build a house and provide all the necessary raw material, can you build the house?

What’s stopping you to build that house which is in my head?

Well, Shivam it’s in your head right, how can we know what you want to build?

Oh right, sorry my bad here’s the Blueprint!

What you may observer in the small conversation above that even if you already have walls, a roof, and some windows, but without the actual details where and how to place them, you're just can’t start or you would be in a nightmare.

That's exactly what Low-Level Design (LLD) is all about in software development—it's the detailed roadmap that spells out every class, object interaction, and that tiny nuance that High-Level Design (HLD) just skips over.

LLD is where we actually get’s our hand dirty and figure out how to turn those big(fat) ideas from HLD into the actual working code.

Why Should You Care About LLD?

As you might already have guessed the answer after intial interaction, but let’s get deep.

High-Level Design gives you the big picture (INOX type of view), but it's the Low-Level Design (IMAX view) that maps out the steps of journey from point A to point B, ensuring every component fits together like puzzle pieces.

  • Boosting Code Quality and Making Life Easier

A solid LLD leads to cleaner code that's easier to understand, maintain, and build upon. It helps spot potential bottlenecks before-hand and design flaws which may arise later in future.

  • Bridging the Communication Gap

LLD acts like a common language among team members, bringing developers, testers, and all other stakeholders onto the same page. It paints a clear picture of how the system works, making collaboration smoother.

Why Do Companies Care About LLD Skills?

In today's fast-paced tech world, companies aren't just looking for coding pundits. They want engineers who can:

  • Design Rock-Solid Systems: Craft solutions that are scalable, efficient, and resilient.

  • Think Ahead: Anticipate challenges and design systems that can adapt when things change.

  • Work Well with Others: Communicate ideas clearly and get along with the team.

Having strong LLD skills shows you can dive deep into problems and create solutions that stand the test of time.

LLD in Real Life: Been There, Done That

We've all been there - jumping straight into code, only to hit a dead end.

What happens then?

We blame the timelinesI! Oh that good old friend timeline, just throw everything at it xD

Inexperienced me, have also many a times skipped the detailed design phase to meet a tight deadline. The result? A tangled mess of code that was a nightmare to debug or extend.

It's like trying to assemble IKEA furniture without the instructions (and let's be honest, that's a recipe for disaster). LLD is that instruction manual—it guides us through the build, ensuring every part fits perfectly.

The Struggle is Real: Mastering LLD

Despite its importance, many developers find LLD daunting. It demands:

  • Requirement Gathering: Collecting all the required and future for-seen requirements and to model them efficiently

  • Deep Understanding: Grasping not just the requirements but the best ways to implement them.

  • Attention to Detail: Considering all possible interactions and edge cases.

  • Experience: Knowing design patterns and principles that lead to effective solutions.

But how to learn and master it?

All the things above can only be learned by practicing them.

But how and where?

I was bound by the same question and with no solution to grasp I made my own platform based on my learning!

Meet Coudo AI: Your New Best Friend

What if there was a way to make this complex process simpler? A tool that could guide you through the ins and outs of LLD, offering instant feedback and even mimicking interview scenarios with follow-up questions?

Introducing Coudo AI

Coudo AI (www.coudo.ai) is like having a mentor by your side. Coudo AI boasts a vast array of LLD problems to solve from.

It provides Instant AI reviews of your code and engages you with follow-up questions that deepen your understanding and prepare you for real-world interviews.

How Coudo AI Helps You Level Up

  • Good Problemset: Vast array of problems verified and filtered by company of your choice (that too in free version itself, oh man what a relief)

  • Instant Feedback: Get immediate insights on your code, catching issues before they become big problems.

  • Interactive Learning: Answer AI-generated questions that challenge your thinking and enhance your skills.

  • Community driven guidance: Ask reviews through the strong community, get their guidance and in return guide other. Apes strong together 💪

Why You Should Give Coudo AI a Shot

In an industry that's always evolving, tools like Coudo AI give you a competitive edge. They help you deliver better software and accelerate your professional growth.

The Perks:

  • Confidence in Your Designs: Know that your solutions are solid and well-structured.

  • Continuous Learning: Stay up-to-date with best practices and modern design principles.

  • Efficiency: Spend less time wrestling with design challenges and more time coding.

Wrapping Up

Low-Level Design isn't just a step in the development process - it's the foundation of robust software solutions. By mastering LLD, you're setting yourself up to build systems that are not just functional but exceptional. Rome was not built in one day and guess what wouldn’t have been build without a plan even in 1000s years.

And with Coudo AI by your side, the journey becomes less daunting and more rewarding. So why not take the plunge? Embrace the details of LLD and watch your projects and your career, reach new heights.

Grinding begins here → www.coudo.ai

Happy designing and coding!!

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Written by

Shivam Chauhan
Shivam Chauhan