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Engineering Digest

Engineering Digest HLD Interview Preparation Playlist

Complete System Design course in Hindi covering distributed systems fundamentals, scalability patterns, microservices architecture, database concepts, caching strategies, and real-world system design case studies.

34 videos11 sectionsWatch on YouTube

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What this playlist covers

Engineering Digest HLD Interview Preparation Playlist by Engineering Digest runs to 34 videos across 11 sections: System Design Fundamentals, Performance and Optimization, Consistency and CAP Theorem, Scaling and Load Balancing, Caching Strategies, Database Design, Communication Patterns and Web Architecture, plus 3 more. Tick each video off as you finish it — progress is saved in this browser, and syncs across devices once you sign in. Nothing here is gated and there is no signup to start.

The most finely sectioned HLD course here and the one with the fewest case studies — strong on components, light on putting them together.

Who it is for

Someone who prefers Hindi-English explanation, or who wants each system design concept isolated rather than met inside a case study.

How to work through it

  1. 01System Design Fundamentals (3), Performance and Optimization (3), Consistency and CAP Theorem (3).
  2. 02Scaling and Load Balancing (3) and Caching Strategies (2).
  3. 03Database Design (6) — the largest section and the most interview-relevant.
  4. 04Communication Patterns (3), Web Architecture (3), Proxy and Network Concepts (2).
  5. 05Security and Authentication (4). Then go elsewhere for case studies — there are only 2 here.

What it does well

  • Eleven tightly scoped sections, so it is easy to watch one topic without committing to a course. Good for filling a specific gap.
  • 4 videos on security and authentication, which most HLD playlists skip and which comes up in senior rounds.
  • Hindi-English delivery, which for a lot of people is the difference between following it and not.

Where it falls short

  • System Design Case Studies gets 2 videos out of 34. Design rounds are case studies — you cannot prepare for them here.
  • Component-by-component framing means you can finish it without ever having designed a whole system.
  • 34 short videos is breadth; expect to go deeper elsewhere on anything that comes up.

What to pair it with

  • Gaurav Sen HLD — 10 case studies against this playlist's 2.
  • Exponent HLD — 29 mocks — the whole-system practice this course does not provide.

Other playlists worth comparing

Exponent HLD Interview Preparation PlaylistExponent · 44 videosMock system design interviews with real FAANG engineers, plus core concepts and interview prep guides.Gaurav Sen HLD Interview Preparation PlaylistGaurav Sen · 26 videosThe playlist most people start with — sharding, consistent hashing, CAP theorem and full designs of real systems.Hello Interview HLD Interview Preparation PlaylistHello Interview · 29 videosStructured system design interview walkthroughs and deep dives into individual building blocks.