System Design Mock Interview: Design Uber Eats (with eBay EM)

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Are you preparing for a system design mock interview? Learn from an engineering manager at eBay as he walks us through designing Uber Eats. Hear his tips and tricks on approaching this type of interview, and get insights into what the interviewer is looking for. Tune in now to get ready for your next system design or engineering manager interview.
Chapters -
00:00 - How do you design Uber Eats?
00:11 - Requirements
02:57 - Non Functional Requirement
06:57 - Back of the envelope estimation
09:14 - Data modeling
18:32 - Design
35:11 - Summary
38:46 - Interview analysis
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[@tryexponent]

Make sure you're interview-ready with Exponent's system design interview prep course: bit.ly/3kWHOup

[@jasonzhang2643]

I believe the candidate focused too early on a specific functionality, such as developing an ML model for detecting bad images, rather than addressing more important parts of the system that were already due for delivery. To avoid this in a system design interview, I suggest using a sticky note or a text box to store ideas for potential improvements or future considerations, in a similar fashion to an Agile parking lot. This approach will help keep the interviewee focused on the task at hand while still capturing any valuable ideas for later.

[@tryexponent]

Hey Jason! Thanks for the feedback and the useful tip!

[@neerajgupta5965]

Yes, it is whimsical. I love how quickly and smoothly thought process can be shared with this tool!

[@speeddykuang-ty9cq]

Is this design Uber eats? How come it jumps to geo hash and ML …….

[@mystica7284]

wow, love this vid! in-depth understanding of designing large scale systems!

[@AbhisarMohapatra]

I am interested to know what goes on into the Experience Layer/Orchestration Layer . Can you please share few resources that point to this thought process ?

[@prashantsalgaocar]

Too much detail without an end to the system design. Still trying to figure out how to round up and search for food on this system. .🤔

[@mithunnambiar1433]

Which is that UI used here for design?

[@user-dz7si2dn4k]

to add, using geohash avoid cpu doing floating point operations (coordinates are floats) and rather let the code rely on string comparison for calculating proximity.

[@eldehan]

Everyone asking what tool he's using: it's called Whimsical

[@Deepz007]

Nice video, just a question, why would you choose NoSQL database for some structured data like Customer and a relational DB for non/semi-structured data like Restaurants. Even though Restaurant can stay under Relational DB umbrella, as we may clearly define the input payload to create restaurant.

[@Deepz007]

Is it because Customers are already huge in number and would surely increase with time. On the other hand, restaurant won't increase by that rapid scale ?

[@austinsparkman8950]

Great video! I personally thought the interviewer sounded impatient which would raddle me in the interviewee position but I'm sure he's done it all the time. A good example to me to keep my cool and keep moving through the process

[@tolufindsyourhome]

What tool do you use for the system design, please ?

[@eldehan]

He's using Whimsical

[@iantanwx]

It looks like whimsical.

[@Searoll1998]

It’s called “whimsical”

[@impatient-tech]

Don’t know what’s this one. Looks cool. But you can try excalidraw it’s quite good and free

[@its_me7363]

what is software used here for designing funnel?

[@tryexponent]

Hi it's_me! The whiteboard software being used here is “Whimsical”. They have a free and paid version so do check them out if you are interested!

[@its_me7363]

@@tryexponent thanks...love ur content

[@sudhirdharmadhikari1938]

Good mock interview. How does this work? Did exponent approach real eBay engineering manager or both are exponent employees ? How can I participate if I want to ? Image processing with ML sounded little bit overkill for Uber Eats. For Instagram kind of apps, its okay. Experience layer for different kind of clients is a good idea.

[@dg_dotnet9616]

Hey I’m new here what EM STANDS FOR. ( eBay em)??

[@tryexponent]

engineering manager!