This video is pure gold, THE best system design I have EVER seen. Not only you provided a solution, but also how you approached it, the thought process is really helpful. The little points that reveal seniority levels are even bonus. Please keep up the great work! Thanks for sharing!
@@hello_interviewReally great content, would love to see a higher level topic as well, example some distributed system design or a complex product like multi tenant gateway.
Wow, I first found you from reddit, your blog post are exceptional, I like the break down by level of expected candidate performance. Now you're making videos. This is by far the best content I've seen so far preparing for my Meta onsite. Thank you for all the hard work you put on
Hi did you give your meta onsite interview? If yes, could you highlight your overall experience especially System Design round? I too have meta onsite interview in next few days. Thanks!
Love this. This is by far the most realistic demonstration I've watched on how to execute a system design interview with a minimal BS. Thanks for sharing it.
Finally. A system design interview that's not done by mid level folks. There's a LOT of it out there and as a staff level EM/Architect at my current workplace, I find them so confusing and hard to learn from. Many of them read a bunch of papers, and just recite whatever the paper says. In fact, following those actually made me unlearn a few of the best practices and expertise I had developed in my current job, as I tried to prep / overfit to system design interviews online. Senior folks looking to interview, BEWARE I loved that you called out "NoSQL vs SQL is an old debate". It really is. When I looked at in memory vs log based messaging queues or Cassandra vs Postgres, you are spot on, in that most of them can do most others, and it's just a question of configuring it right. Subscribing to you, and have bought some mock interviews too from your company!
You get it! Exactly how I felt when reviewing the existing resources. So much of it feels like academic regurgitation. Glad the content resonates and excited to help you prepare for the upcoming interviews :)
Thanks to this channel and videos, I passed my Google interview! I was asked a question similar to the Ticketmaster. I've watched all your videos many times, and they really helped me. Thank you! Keep doing great work!🙌
Very well structured and easy to follow. Few comments 1. regarding putting the user_id in the request body: This is common practice for good API design because sometimes you want to be able to book a ticket for someone else. In any normal application you would have authorization checks to ensure that the user is accessible. For ease of use you can fall back to the user id of the authenticated user if not set. 2. Having multiple microservices sharing the same database goes against basic design principles for microservices. Just say it's different components of the application
Amazing video. Please keep uploading! I'm currently preparing for an upcoming onsite SD interview so have been hopping channels. I can testify this is by far the best video I've seen! Bless the soul who has put the time & effor to wonderfully craft this video..
I can't believe I was searching for a "Ticket Master" SD video 15-20 days ago. I found many good videos, but I didn't watch a video that made me say, "Wow." And then, suddenly, TH-cam recommended this pure gold. Just saw you are at the beginning of your channel; please keep providing this great content.
I never leave a comment but I think I have to leave a comment here. This is the best video for system design interview that I've ever seen on TH-cam. Talking in depth to break up some design choices for mid level and senior/staff is good, and I think it covers lots of other details too. I would highly recommend this!
I think 'how you pick a ticket id from db and then put it safely in redis' needs more detailing.. as by the time we pick a ticket for a user same can be picked for other users unless we introduce randomness and this will result in more db hits to reserve a ticket for a user. Btw you are doing a mind blowing job.. Best channels on youtube for content and especially for the presentability and right behaviour!
This was a fantastic video. I was able to follow what you were doing the entire time, and I loved how you discuss alternative ways to implement things. It's definitely one of the best system design interview videos I've seen. Please make more!
Oh yeah, I also forgot to mention that this video introduced me to the concept of locking a record using a cache entry with a TTL. I hadn't seen that one before, so I really learned something I could use in the future in other system design problems.
I’ve watched every System Design mock interview I could find over the past half year and Hello Interview are the BEST. Thank you for such a great resource!
After checking a lot of online videos of System Design, I can most certainly say, this is the best System Design content available on internet. Kudos to you!!!
This is excellent. Love how you mentioned the expected answers for different levels of seniority. Really helps to assess where I am and get an understanding of how to move up
These videos are just so addictive....I feel like coming back and doing more and more....These have all the details that you need in an interview....They are so precious...please add more content. A big shout out to Hello interview ❤❤❤.
I am always amazed by the quality you put into your contents. You are one of the few TH-camrs that I actually spend time trying to watch every videos MULTIPLE times to grasp everything. Thank you, much love from Japan.
Please add more videos. I don't get bored by watching your videos. I liked your approach and way of solving the problem. The flow of the video is very very organised and gave a sense to people for approaching their system design interviews.
This is incredible. Learning something for an interview is one thing but enjoying the architecture is something else. I was hooked onto it like a Netflix binge series! Kudos!
This video is hands down the best I've come across for system design. Having watched numerous tutorials in this space, I can confidently say that the level of detail and clarity here is unmatched. I particularly appreciate how the thought process is broken down.
This is one of the best and detailed system design video. Thanks for posting this. I like how you pointed out the differences between Mid-level, Senior and Staff in places like using Cron Job, Distributed lock etc. Most of the system design resources online lack that kind of indepth details. Kudos to you. Can't wait to learn more from your videos. Thanks again!
Thanks for this! I'm currently prepping for my on-site and this was really helpful. Please continue to put out more videos on different designing problems.
Great video, so far the best to address actual system design interview planning, scoping and execution, and alignment to different levels of engineers!
The way you have structured the whole design as a 5 step process is immensely helpful. It will help us stay focused on the core things in the interview as well as act a guide/pathway to solve any interview problem.
Towards the end the "Virtual waiting room" kept me thinking. People who are booking seats for larger venues know which places they want to choose. Keeping an uber and monolith waiting queue is sub-optimal. May be divide the ticket areas in to booking zones (premium, near stage, aisle, etc.) and offer wait for those zones. We can also show what wait queues size, % of seats filled , etc. in these zones while loading/waiting. Nice and Sweet walk through. Hard to find this kind of content for assessing levels. Thank you so much.
Aah thank you for this!! I'm just learning system design for the first time really. This is the first walkthrough I've watched and it is SO helpful to see your process and how all the building blocks fit together! 🤩
Please make more videos. Yours have just the right structure and content. I just want your videos on more topics. Other people's videos are either not well structured, or go into unnecessary details
A very knowledge rich video and not limited to mock interview setup, this is perfect way of teaching, gonna watch all his videos. Amazing work! Thanks a lot...
Great deep dive. As a mid level engineer, it highlights so many things and technologies to look at when doing a system design interview. Really great job!!!!
Thank you so much for these videos. They are very well explained and cover all the key parts of the solution without going into unnecessary complexity and depth that really confuses the heck out of me sometimes.
I just came across a gem 💎 This is by far one of the greatest explanation & problem handling for system design interviews I’ve ever seen. Keep posting bro 👏💯
Thanks Evan King and Hello Interview for this video. This is probably the best system design video I have seen in general. Most of the other available videos on TH-cam on System Design topics just try push most generic components in the diagram and technology jargons without any insight on why they choose that. Such videos just looked like a template for people to do content farming videos on System Design. This approach was much more practical and what might mostly happen in interview 1. The way you explained what kind of Non-functional requirements one should speak of should be relevant to the system you are designing instead of jargons like high availability, low latency, highly scalable, resilient etc. In this case most important was consistency 2. You kept modifying the entities to suit the design and remove bottlenecks as you proceeded. Especially the status column in Tickets table was one good example. 3. You updated the design based on each NFRs explaining how the approach would be different. 4. You continuously challenged your own most basic or naive design, showed us what kind of bottlenecks we would face in that approach, what questions an interviewer ask and how can we solve it more sophistically. It's a great insight for someone like me who do not get the opportunity to work with the big tech companies on such systems. Great learning for us and also to know how a mind should work to tackle problems. Hope to see more of this. I would also suggest people to go through the blog link which you provided since the discussions there with people asking more questions and you giving answers to them give more insights
Love these, these videos provide a nice framework you can apply to solve a problem even if you don’t know about much about the problem. Love it, thanks for amazing content!
Excellent video. The process is very good, paritcularly "don't put any detail upfront, wait for the right time to fill up when things are visited in detail". Very nice top down approach. Thanks a lot
I watched several youtubers doing system design, but none of them are as structured and succinct as yours. In fact some people dive so deep that it is practically impossible to tackle that much content in a 45 min interview (35 mins actually). This is awesome and I am really looking forward for more problems. Please keep up the good work.
Great Video. One of the best video for system design interviews helps point out relevant F&NF requirements, design step by step, find key problem areas, and how to approach a solution.
gold video and channel, and you have the experience to back it up. Keep up the high standard (as opposed to a fast churning out of new SD videos that sometimes lack the depth the creator puts into other videos on their channel)
Covered so many concepts and made sense the whole time while maintaining focus on the requirements, unlike other youtubers who are all over the place not even sure what they are doing lol. Amazing video and the best channel for system design!
one of the best system design interviews I've seen, to the point, everything very clear and justified. There's so much BS out there, this is refreshing. I love how it skips the back of the envelope calculations, truly many times people do it for nothing!
The best video ever. I love the fact that you break the norm around scalability and sql vs nosql. With the advent of aws and managed services the scalability argument really doesn’t makes sense in terms of horizontal scaling. Thank you for the video. Please keep making more videos
Near the end you mention using a CDN to cache the search query results. The AWS API Gateway in your design already supports query caching :) Agree though that the CDN would definitely be useful for images and other static resources though!
Additionally I would like you to stress out and discuss a) backend types: like reactive vs non-reactive where applicable. Reactive is non-blocking and hence should serve bigger loads. b) keeping open search in sync feels challenging, maybe better to consider read-only replica set of postgres (aws supports up to 5 replicas syncing asynchronously) with separate access url, though losing full text search possibility, but here we are not dealing with huge texts.
Amazingly detailed design..Most of the time, I only get to the 30minute mark of this video in my interviews...I now realize, how deep we can go and what interviews almost always expect these days!
FWIW, keep in mind this is likely more than is needed an in interview (depending on your level). It’s more illustrative of the places you can go deep, rather than where you must
This is a great session. I love especially the parts where you distinguish between mid, senior and staff levels which gives great hints what to prepare for
Amazing video! A friend of mine who took hellointerview course told me to watch this Ticketmaster video to prep my upcoming interviews as it's pure gold. I'm glad I actually listened to him because this video helped clearing out uncertain discussions like SQL vs NoSQL, back of the envelope calculation, etc. Also, love how you pin-point seniority levels based on details and deep diving. Thank you for sharing!
Best SD video for me so far. I like how you skipped estimations part as I feel the same about them not contributing anything to the design. Starting with basic solutions and evolving them to most optimal like CDC and Redis Lock Db is golden. Wish to see more of this. One thing i was lost is at the virtual Q, that sounds good but couldn’t wrap my head around it. Would love to see a deep dive into it during next videos
Best system design interview I've seen yet, but it also illustrates the whole challenge of FAANG industrializing the software engineer employment interview.. (ie, this person has been doing dozens of these specific sys designs ) instead of having standard and certification for engineers we rely on a flawed interview process , ie one that encourages people to memorize leetcode and sys design interviews about famous use cases.. I feel like this process is counterproductive for healthy engineering teams, but again this is the best one I've seen..
Great video. Actually i Confused where to get mast system design, but i hope hello interview will provide a clear gateway for mastering a system design. Expecting more similar
Great presentation ! Very informative ! One note, the this is a well-prepared presentation where the flow of main topics and ideas must have taken many hours. Based on the description, unless the candidate has implemented the system it would be pretty difficult to make the Staff Level cut. Feels a bit discouraging 😅 !!
One of the best system design videos on youtube. Really well explained and detailed designed. Especially liked how you talked about what signals are sent by how you design individual components and how that impacts your seniority level
Excellent video and resource, thank you. The only thing I wish that had a bit better reasoning was the tradeoff between the timestamp vs lock approach. Technically, the reasoning you gave doesn't seem applicable to the timestamp if you modify the status to accept just available and booked, we can eliminate the data model inconsistency and rely just on a last reserved timestamp (anything over 10 mins ago), without needing a cron. The tradeoff is a less complicated SQL query (as you mentioned), but for a much more complicated infrastructure. I think there's an argument here for the more complicated infra if reads are excessive for tickets, which they very well might be. Anyways, I think there's a lot of meat in the nuanced tradeoffs here. Thanks again, great video.
This is amazing!😍Your ability to choose what to dive into and what to just mention is the best I've ever seen! That was super helpful. I'd really like to hear your opinion on 2 things though: - I noticed you don't hesitate to name a specific technology. Most people recommend to avoid doing it and just say 'relational db, in memory db' if you don't want to explain why Redis and not Memcached, for example. What's your experience with it? Is it sufficient to reply something like 'sure, we can use that instead, it doesn't matter much, so I won't go into details'? - You use verbs in your APIs which goes against RESTful API naming convention. There're some ways to get rid of it (i.e. use POST /reservations instead, use status=reserved as a param, use /booking:reserve). Do you think it's not worth the effort and action endpoints are fine as is (both in an interview and real life)?
Excellent tips about design decisions based on the seniority of the role. I liked the steps articulated at the beginning to give a sense of what's in scope for the interview. Very well structured! It was by far the best system design interview video I have watched on TH-cam
Found this super valuable - I’ve seen so many systems design interview prep videos but you’re perspective on what the interviewer is looking for is unique!
Wow, this is so far my favorite system design video. Superb video my friend, excellent content. I love how you have a very well defined framework to the system design, which allows you to systematically build the design little by little, in a way that makes sense and it is very easy to follow. I cannot wait to see more of your videos. Keep up the good work man 👏🏼
Very rarely I comment on videos, and especially tech videos. But this explanation is absolutely wonderful. Loved it so much. The way you approached the problem, slowly getting into the details, and tidbits here n there, makes it perfect way to explain anything. Subscribing right away. THANK YOU!
OMG I cannot believe my stars, this the best video I've yet to find for system design, no wonder you have over 100k subscribers (including me) with just 4 videos. I am so looking forward to your next videos.
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This video is pure gold, THE best system design I have EVER seen. Not only you provided a solution, but also how you approached it, the thought process is really helpful. The little points that reveal seniority levels are even bonus. Please keep up the great work! Thanks for sharing!
Sweet! Encouraging feedback, thank you!
@@hello_interviewReally great content, would love to see a higher level topic as well, example some distributed system design or a complex product like multi tenant gateway.
This is the BEST video I've seen so far on this question. Unfortunately, it's too late. Failed my interview and found this! :(
there is always a next time!
same here bro! lets keep trying
Same here.
there's millions of companies!
This is incredibly useful in my prep for a meta full loop. Thank you!
Amazing! So glad to hear that. Good luck with the interviews!
Wow, I first found you from reddit, your blog post are exceptional, I like the break down by level of expected candidate performance. Now you're making videos. This is by far the best content I've seen so far preparing for my Meta onsite. Thank you for all the hard work you put on
Hi did you give your meta onsite interview? If yes, could you highlight your overall experience especially System Design round? I too have meta onsite interview in next few days. Thanks!
How did your onsite SD go? what question did you get?
Love this. This is by far the most realistic demonstration I've watched on how to execute a system design interview with a minimal BS. Thanks for sharing it.
This channel honestly has the best system design content in the entire internet. Keep going!
🚀
Is the playlist going to be updated?As I see only 7 videos here
@@nikhilmugganawar We're putting out new content as quickly as we can. Not stopping, don't worry.
Finally. A system design interview that's not done by mid level folks. There's a LOT of it out there and as a staff level EM/Architect at my current workplace, I find them so confusing and hard to learn from. Many of them read a bunch of papers, and just recite whatever the paper says. In fact, following those actually made me unlearn a few of the best practices and expertise I had developed in my current job, as I tried to prep / overfit to system design interviews online. Senior folks looking to interview, BEWARE
I loved that you called out "NoSQL vs SQL is an old debate". It really is. When I looked at in memory vs log based messaging queues or Cassandra vs Postgres, you are spot on, in that most of them can do most others, and it's just a question of configuring it right.
Subscribing to you, and have bought some mock interviews too from your company!
You get it! Exactly how I felt when reviewing the existing resources. So much of it feels like academic regurgitation. Glad the content resonates and excited to help you prepare for the upcoming interviews :)
Thanks to this channel and videos, I passed my Google interview! I was asked a question similar to the Ticketmaster. I've watched all your videos many times, and they really helped me. Thank you! Keep doing great work!🙌
Let’s gooo!!! Congrats!🎉
Very well structured and easy to follow. Few comments
1. regarding putting the user_id in the request body: This is common practice for good API design because sometimes you want to be able to book a ticket for someone else. In any normal application you would have authorization checks to ensure that the user is accessible. For ease of use you can fall back to the user id of the authenticated user if not set.
2. Having multiple microservices sharing the same database goes against basic design principles for microservices. Just say it's different components of the application
I had the same thought re: point 2.
Amazing video. Please keep uploading!
I'm currently preparing for an upcoming onsite SD interview so have been hopping channels. I can testify this is by far the best video I've seen! Bless the soul who has put the time & effor to wonderfully craft this video..
Sweet! New video coming this week!
I can't believe I was searching for a "Ticket Master" SD video 15-20 days ago. I found many good videos, but I didn't watch a video that made me say, "Wow." And then, suddenly, TH-cam recommended this pure gold.
Just saw you are at the beginning of your channel; please keep providing this great content.
Amazing! Will keep them coming for sure :)
I never leave a comment but I think I have to leave a comment here. This is the best video for system design interview that I've ever seen on TH-cam. Talking in depth to break up some design choices for mid level and senior/staff is good, and I think it covers lots of other details too. I would highly recommend this!
Amazing!
I think 'how you pick a ticket id from db and then put it safely in redis' needs more detailing.. as by the time we pick a ticket for a user same can be picked for other users unless we introduce randomness and this will result in more db hits to reserve a ticket for a user.
Btw you are doing a mind blowing job.. Best channels on youtube for content and especially for the presentability and right behaviour!
This was a fantastic video. I was able to follow what you were doing the entire time, and I loved how you discuss alternative ways to implement things. It's definitely one of the best system design interview videos I've seen. Please make more!
Oh yeah, I also forgot to mention that this video introduced me to the concept of locking a record using a cache entry with a TTL. I hadn't seen that one before, so I really learned something I could use in the future in other system design problems.
I’ve watched every System Design mock interview I could find over the past half year and Hello Interview are the BEST. Thank you for such a great resource!
After checking a lot of online videos of System Design, I can most certainly say, this is the best System Design content available on internet.
Kudos to you!!!
I’m so happy I found your channel!! I’m so tired watching system design videos from ivy league fresh grads with 1 year of experience in tech.
This is excellent. Love how you mentioned the expected answers for different levels of seniority. Really helps to assess where I am and get an understanding of how to move up
These videos are just so addictive....I feel like coming back and doing more and more....These have all the details that you need in an interview....They are so precious...please add more content. A big shout out to Hello interview ❤❤❤.
One of the best HLD design process overviews I've seen. Well done and thank you!
I am always amazed by the quality you put into your contents. You are one of the few TH-camrs that I actually spend time trying to watch every videos MULTIPLE times to grasp everything. Thank you, much love from Japan.
Please add more videos. I don't get bored by watching your videos. I liked your approach and way of solving the problem. The flow of the video is very very organised and gave a sense to people for approaching their system design interviews.
Very succinct. Maybe the most comprehensive I have seen. Please do more of these!
This is incredible. Learning something for an interview is one thing but enjoying the architecture is something else. I was hooked onto it like a Netflix binge series! Kudos!
Just echoing the other comments, this is by FAR the best system design interview vid I've seen. Great level of details!
This video is hands down the best I've come across for system design. Having watched numerous tutorials in this space, I can confidently say that the level of detail and clarity here is unmatched. I particularly appreciate how the thought process is broken down.
This video is the BEST I've seen for seniors. It points to the most important parts in an interview, and teaches you how to be outstanding.
This is one of the best and detailed system design video. Thanks for posting this. I like how you pointed out the differences between Mid-level, Senior and Staff in places like using Cron Job, Distributed lock etc. Most of the system design resources online lack that kind of indepth details. Kudos to you. Can't wait to learn more from your videos. Thanks again!
Thank you! Can't wait to make more for you 💪
Thanks for this! I'm currently prepping for my on-site and this was really helpful. Please continue to put out more videos on different designing problems.
Great video, so far the best to address actual system design interview planning, scoping and execution, and alignment to different levels of engineers!
The best videos I have seen for preparing system design, 10/10 recommended to anyone finding a way to get a whole picture of designing a system.
The way you have structured the whole design as a 5 step process is immensely helpful. It will help us stay focused on the core things in the interview as well as act a guide/pathway to solve any interview problem.
Fantastic video. One of the best system design videos on the subject. Well done. Thank you very much for your efforts!
Towards the end the "Virtual waiting room" kept me thinking. People who are booking seats for larger venues know which places they want to choose. Keeping an uber and monolith waiting queue is sub-optimal. May be divide the ticket areas in to booking zones (premium, near stage, aisle, etc.) and offer wait for those zones. We can also show what wait queues size, % of seats filled , etc. in these zones while loading/waiting.
Nice and Sweet walk through. Hard to find this kind of content for assessing levels. Thank you so much.
Thanks! As a newbie I like these much better than grokking the system design. Would absolutely purchase them if there were more of them
Aah thank you for this!! I'm just learning system design for the first time really. This is the first walkthrough I've watched and it is SO helpful to see your process and how all the building blocks fit together! 🤩
Please make more videos. Yours have just the right structure and content. I just want your videos on more topics. Other people's videos are either not well structured, or go into unnecessary details
A very knowledge rich video and not limited to mock interview setup, this is perfect way of teaching, gonna watch all his videos. Amazing work! Thanks a lot...
Being from FAANG myself....
I loved the video sir.... Waiting for more videos from u
Awesome!
Great deep dive. As a mid level engineer, it highlights so many things and technologies to look at when doing a system design interview. Really great job!!!!
Thank you so much for these videos. They are very well explained and cover all the key parts of the solution without going into unnecessary complexity and depth that really confuses the heck out of me sometimes.
You do such an amazing job laying out the thought process, technical details and how to level up your design! THANK YOU
I just came across a gem 💎 This is by far one of the greatest explanation & problem handling for system design interviews I’ve ever seen. Keep posting bro 👏💯
These are the most engaging system design videos I've seen so far. Thanks a lot!
Thanks Evan King and Hello Interview for this video. This is probably the best system design video I have seen in general. Most of the other available videos on TH-cam on System Design topics just try push most generic components in the diagram and technology jargons without any insight on why they choose that. Such videos just looked like a template for people to do content farming videos on System Design.
This approach was much more practical and what might mostly happen in interview
1. The way you explained what kind of Non-functional requirements one should speak of should be relevant to the system you are designing instead of jargons like high availability, low latency, highly scalable, resilient etc. In this case most important was consistency
2. You kept modifying the entities to suit the design and remove bottlenecks as you proceeded. Especially the status column in Tickets table was one good example.
3. You updated the design based on each NFRs explaining how the approach would be different.
4. You continuously challenged your own most basic or naive design, showed us what kind of bottlenecks we would face in that approach, what questions an interviewer ask and how can we solve it more sophistically.
It's a great insight for someone like me who do not get the opportunity to work with the big tech companies on such systems. Great learning for us and also to know how a mind should work to tackle problems.
Hope to see more of this.
I would also suggest people to go through the blog link which you provided since the discussions there with people asking more questions and you giving answers to them give more insights
Love these, these videos provide a nice framework you can apply to solve a problem even if you don’t know about much about the problem. Love it, thanks for amazing content!
Cheers!
Excellent video. The process is very good, paritcularly "don't put any detail upfront, wait for the right time to fill up when things are visited in detail". Very nice top down approach. Thanks a lot
Best System Design interview content which i have gone through yet on youtube. Please keep on creating such content.
Super informative and helpful video! Probably best one I've ever seen about system design! Please make more videos like this, Evan!
I watched several youtubers doing system design, but none of them are as structured and succinct as yours. In fact some people dive so deep that it is practically impossible to tackle that much content in a 45 min interview (35 mins actually). This is awesome and I am really looking forward for more problems. Please keep up the good work.
This was really helpful , I used to go a lot in over-engineering, this gives a better systematic way of answering within the time limit. Thanks mate
I had seen many system design interview video in the youtube, I believe the hello interview is the best one. Thanks for good sharing.
Thank you 🙏 starting to feel more confident for my upcoming interviews thanks to studying these
Excellent!!! This is by far the best SD I have ever come across in many years, thank you so much for this.
Great video. The walkthrough commentary of how things would play out in a real interview is extremely hopeful. Thank you.
This is the best channel on system design. Keep posting such high-quality content. Thanks a million
Very nice. I really liked the clarity of thoughts. No fluff pure tech design with pros and cons. Kudos! Keep them coming
By far the best mock SWE interview ever, learnt a lot, lots of takeaways.
This is the best design interview, contains almost every aspect of interview. Thanks. Really an awesome detailing
Absolutely amazing. Please post more
One of the very best system design interviews I have seen on TH-cam! Please make more of these helpful videos.
Right on! New one dropping today :)
Simply the best solution on TH-cam for TicketMaster design.Followed and will go through the rest of them!
🫡
Great Video.
One of the best video for system design interviews helps point out relevant F&NF requirements, design step by step, find key problem areas, and how to approach a solution.
gold video and channel, and you have the experience to back it up. Keep up the high standard (as opposed to a fast churning out of new SD videos that sometimes lack the depth the creator puts into other videos on their channel)
Covered so many concepts and made sense the whole time while maintaining focus on the requirements, unlike other youtubers who are all over the place not even sure what they are doing lol.
Amazing video and the best channel for system design!
one of the best system design interviews I've seen, to the point, everything very clear and justified. There's so much BS out there, this is refreshing. I love how it skips the back of the envelope calculations, truly many times people do it for nothing!
The best video ever. I love the fact that you break the norm around scalability and sql vs nosql. With the advent of aws and managed services the scalability argument really doesn’t makes sense in terms of horizontal scaling. Thank you for the video. Please keep making more videos
One few "REAL SYSTEM DESIGN" channels, this interview really helped me, thank you so much!
Near the end you mention using a CDN to cache the search query results. The AWS API Gateway in your design already supports query caching :) Agree though that the CDN would definitely be useful for images and other static resources though!
Additionally I would like you to stress out and discuss a) backend types: like reactive vs non-reactive where applicable. Reactive is non-blocking and hence should serve bigger loads. b) keeping open search in sync feels challenging, maybe better to consider read-only replica set of postgres (aws supports up to 5 replicas syncing asynchronously) with separate access url, though losing full text search possibility, but here we are not dealing with huge texts.
This is the best channel for system design handsdown
Amazingly detailed design..Most of the time, I only get to the 30minute mark of this video in my interviews...I now realize, how deep we can go and what interviews almost always expect these days!
FWIW, keep in mind this is likely more than is needed an in interview (depending on your level). It’s more illustrative of the places you can go deep, rather than where you must
I'm entry level and even though I couldn't come up with half this stuff I still was able to follow. Learned a lot of new ideas so thanks
This is a great session. I love especially the parts where you distinguish between mid, senior and staff levels which gives great hints what to prepare for
Amazing video! A friend of mine who took hellointerview course told me to watch this Ticketmaster video to prep my upcoming interviews as it's pure gold. I'm glad I actually listened to him because this video helped clearing out uncertain discussions like SQL vs NoSQL, back of the envelope calculation, etc. Also, love how you pin-point seniority levels based on details and deep diving. Thank you for sharing!
Best SD video for me so far. I like how you skipped estimations part as I feel the same about them not contributing anything to the design. Starting with basic solutions and evolving them to most optimal like CDC and Redis Lock Db is golden. Wish to see more of this.
One thing i was lost is at the virtual Q, that sounds good but couldn’t wrap my head around it. Would love to see a deep dive into it during next videos
Best video by far man totally agree with skipping on the back of the napkin when not necessary
Best content on entire internet, The fact you provided excalidraw links as well was amazing!
Best system design interview I've seen yet, but it also illustrates the whole challenge of FAANG industrializing the software engineer employment interview.. (ie, this person has been doing dozens of these specific sys designs ) instead of having standard and certification for engineers we rely on a flawed interview process , ie one that encourages people to memorize leetcode and sys design interviews about famous use cases.. I feel like this process is counterproductive for healthy engineering teams, but again this is the best one I've seen..
i watched 4 videos on this topic, and was still lost - you absolutely smashed this
thanks,
Hell ya!
Great video. Actually i Confused where to get mast system design, but i hope hello interview will provide a clear gateway for mastering a system design. Expecting more similar
Great presentation ! Very informative ! One note, the this is a well-prepared presentation where the flow of main topics and ideas must have taken many hours. Based on the description, unless the candidate has implemented the system it would be pretty difficult to make the Staff Level cut. Feels a bit discouraging 😅 !!
One of the best system design videos on youtube. Really well explained and detailed designed. Especially liked how you talked about what signals are sent by how you design individual components and how that impacts your seniority level
Great content and nicely building up the complexities. I am surely going to book a mock interview
Appreciate the kind words and looking forward to working with you!
I've been watching system design videos for a couple of days and this one is by far the best one. Thanks
Excellent video and resource, thank you. The only thing I wish that had a bit better reasoning was the tradeoff between the timestamp vs lock approach. Technically, the reasoning you gave doesn't seem applicable to the timestamp if you modify the status to accept just available and booked, we can eliminate the data model inconsistency and rely just on a last reserved timestamp (anything over 10 mins ago), without needing a cron. The tradeoff is a less complicated SQL query (as you mentioned), but for a much more complicated infrastructure. I think there's an argument here for the more complicated infra if reads are excessive for tickets, which they very well might be. Anyways, I think there's a lot of meat in the nuanced tradeoffs here. Thanks again, great video.
This is amazing!😍Your ability to choose what to dive into and what to just mention is the best I've ever seen! That was super helpful. I'd really like to hear your opinion on 2 things though:
- I noticed you don't hesitate to name a specific technology. Most people recommend to avoid doing it and just say 'relational db, in memory db' if you don't want to explain why Redis and not Memcached, for example. What's your experience with it? Is it sufficient to reply something like 'sure, we can use that instead, it doesn't matter much, so I won't go into details'?
- You use verbs in your APIs which goes against RESTful API naming convention. There're some ways to get rid of it (i.e. use POST /reservations instead, use status=reserved as a param, use /booking:reserve). Do you think it's not worth the effort and action endpoints are fine as is (both in an interview and real life)?
Excellent tips about design decisions based on the seniority of the role. I liked the steps articulated at the beginning to give a sense of what's in scope for the interview. Very well structured! It was by far the best system design interview video I have watched on TH-cam
🤗
Hi Evan, The content on your channel is pure gold. Request you to continue providing free content frequently.
You just earn a subscriber from this video. Very clear explanations and how to approach the design.
You're amazing! Thanks for making this guide. My favorite systems design interviews on youtube
THIS IS THE BEST SO FAR, PERIOD.
Found this super valuable - I’ve seen so many systems design interview prep videos but you’re perspective on what the interviewer is looking for is unique!
Wow, this is so far my favorite system design video. Superb video my friend, excellent content. I love how you have a very well defined framework to the system design, which allows you to systematically build the design little by little, in a way that makes sense and it is very easy to follow. I cannot wait to see more of your videos. Keep up the good work man 👏🏼
This is super helpful. Best system design video I've watched.
These videos are the best! I love the 5 step roadmap, it makes it very easy to build up the design. Thank you so much! More videos please!
Soon!
Very rarely I comment on videos, and especially tech videos. But this explanation is absolutely wonderful. Loved it so much. The way you approached the problem, slowly getting into the details, and tidbits here n there, makes it perfect way to explain anything.
Subscribing right away.
THANK YOU!
best system design videos i've ever seen on YT
OMG I cannot believe my stars, this the best video I've yet to find for system design, no wonder you have over 100k subscribers (including me) with just 4 videos. I am so looking forward to your next videos.
We wish 100k! Still early, but glad you’re enjoying them. More soon :)
The best system design video i have come across, main thing i did not realize 1 hour went by
Time flies when you’re having fun! 😛