Learn System Design

About Learn System Design

A bi-weekly podcast hosted by a senior engineer named Ben Kitchell that takes a deep dive into learning about technical system design by learning together. Each episode we will explore the inner workings of what makes these systems so complex and fascinating while building on our knowledge of how they came together. All music written and performed by the mysterious Aimless Orbiter. You can find more info about him and his music at https://soundcloud.com/aimlessorbitermusic

Publisher

Ben Kitchell

Category

education · science · technology

Language

en

Explicit

No

First episode

25 Feb 2024

Latest episode

28 Jan 2025

Latest episodes

15 of 16 episodes have a transcript.

1. 

   28 Jan 2025TRANSCRIPT

   Mastering System Design Interview: Creating a Scalable Parking Garage System

   The Learn System Design podcast delves into the intricacies of designing a parking lot system, a topic often encountered in technical interviews, especially at large tech companies. The host, Ben Kitchell, begins by providing context from previous discussions, particularly regarding the importance of atomicity and redundancy in system design. He emphasizes the need for a reliable and scalable architecture that can handle real-time reservations and payments, illustrating the challenges of maintaining consistency in a distributed environment. The episode outlines critical functional requirements such as user authentication, reservation capabilities, and payment processing, while also addressing non-functional requirements like security and latency. Throughout the discussion, Ben explores the CAP theorem, highlighting the trade-offs between consistency and availability. He advocates for prioritizing consistency in this specific use case—parking reservations—because allowing multiple users to occupy the same spot would lead to significant user dissatisfaction. The episode also covers capacity estimates, proposing a realistic user base and discussing storage needs, which ultimately lead to considerations for database modeling. Ben suggests utilizing a relational database for its inherent relationships between users, vehicles, and reservations, ensuring data integrity and efficient querying. Furthermore, the podcast dives into the technical architecture of the system, advocating for a modular approach with dedicated services for user management, vehicle handling, parking spot management, and payment processing. Ben proposes the use of Redis for distributed locking to manage concurrency effectively, ensuring that users cannot double-book parking spots. He concludes with a discussion on scaling strategies and the importance of designing systems that can evolve with changing demands. This episode serves as a comprehensive guide for engineers looking to deepen their understanding of system design while preparing for real-world application and technical interviews. Takeaways: Building a parking lot system requires a focus on core functional requirements like user reservation and payment. Using a distributed locking mechanism, such as Redis, can help maintain consistency in concurrent transactions. Non-functional requirements such as security and low latency are critical for user satisfaction. Estimating capacity for the system is important; 100,000 users a month is a realistic start. A structured database model with tables for users, vehicles, reservations, and spots is essential for functionality. Designing for scalability involves separating services and using load balancers to manage traffic effectively. Companies mentioned in this episode: Amazon AWS DynamoDB Zookeeper Stripe Raising Cane's Chick Fil A Support the show (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

2. 

   7 Jan 2025TRANSCRIPT

   Mastering System Design Interview: From Concept to Scale Building Efficient URL Shorteners

   Send us a textURL Shortener DesignsUnlock the secrets to designing a high-performing URL shortener system in our latest episode with Ben at the helm! Get ready to master the essentials that transform a simple idea into a robust tool, essential for platforms with strict character limits like Twitter. We'll walk you through the core elements of creating effective short URLs, from ensuring seamless redirects to setting expiration dates tailored for various industries like marketing firms. Discov...

3. 

   17 Dec 2024

   Mastering System Design Interviews: Building Scalable Web Crawlers

   Send us a text Web Crawler DesignsCan a simple idea like building a web crawler teach you the intricacies of system design? Join me, Ben Kitchell, as we uncover this fascinating intersection. Returning from a brief pause, I'm eager to guide you through the essential building blocks of a web crawler, from queuing seed URLs to parsing new links autonomously. These basic functionalities are your gateway to creating a minimum viable product or acing that system design interview. You’ll gain insig...

4. 

   19 Nov 2024TRANSCRIPT

   Mastering System Design Interview: Navigating Database Models, Entity Relationships, and Key Attributes for Robust Systems

   Ben Kitchell shares expert insights on mastering database models, entity relationships, and key attributes to design robust systems and ace system design interviews.

5. 

   5 Nov 2024TRANSCRIPT

   Mastering System Design Interview: Unlocking API Design, Crafting Routes, and Real-Time Data Transfer Techniques

   Benny Kitchell shares expert insights on mastering system design interviews by unlocking API design techniques, crafting routes, and real-time data transfer methods to elevate your system design skills.

6. 

   15 Oct 2024TRANSCRIPT

   Mastering System Design Interview: Capacity Estimates, Scaling Challenges, and Strategic Insights

   Send us a textMaster the art of system design as Benny Ketchel guides us through the essential skills every senior tech candidate needs to excel, starting with capacity estimates. By the end of this episode, you'll be able to navigate the complexities of bandwidth and data size without getting bogged down in unnecessary arithmetic. We explore how to think like industry leaders at Netflix, Google, and Instagram, focusing on rough estimates, worst-case scenarios, and the use of metric prefixes ...

7. 

   1 Oct 2024TRANSCRIPT

   Mastering System Design Interview: Essential System Design Interview Principles and Techniques

   Send us a textCan a simple delay really cost a company millions? We kick off season two of the Learn System Design podcast by exploring this and more. I'm Benny Kitchell, your host, and after a refreshing hiatus, I'm excited to bring you a fresh take on system design interviews and real-world applications. We start with the fundamentals of functional requirements using a relatable example: a music streaming app like Spotify. Discover how to align core functionalities such as song playback, pl...

8. 

   24 Sept 2024TRANSCRIPT

   Emergency Pod: Season 2 is Coming Soon

   Send us a textSupport the showDedicated to the memory of Crystal Rose.Email me at LearnSystemDesignPod@gmail.comJoin the free Discord Consider supporting us on PatreonSpecial thanks to Aimless Orbiter for the wonderful music.Please consider giving us a rating on ITunes or wherever you listen to new episodes.

9. 

   24 Jun 2024TRANSCRIPT

   7. Decoding the Internet: From DNS to Advanced Service Discovery

   Send us a Text Message. (https://www.buzzsprout.com/twilio/text_messages/2318484/open_sms) How does the invisible architecture of the internet keep everything running smoothly? Prepare to have your mind blown as we unravel the mysteries of the Domain Name System (DNS) in this episode of Learn System Design. We'll guide you through the intricate process of how your browser finds the correct IP address for a domain name, likening DNS to an enormous, sophisticated key-value database. Discover the essential components that make DNS work seamlessly, from DNS servers and resource records to caching mechanisms. We break down the DNS hierarchy, explaining the pivotal roles of recursive resolvers, root name servers, and top-level domain servers. But that's not all—we're also diving deep into the world of service discovery patterns. Which is better: client-side or server-side discovery? We'll weigh the pros and cons of each, spotlighting real-world examples like Netflix's Eureka and AWS Elastic Load Balancer. Learn why a service registry is crucial for maintaining an updated list of services and how heartbeat checks fit into this ecosystem. Finally, we explore three popular service discovery methods—DNS-based, Apache Zookeeper, and sidecar services—giving you an in-depth look at their benefits and limitations. This episode is your ultimate guide to building robust and efficient systems, so tune in and elevate your system design knowledge! Learn more about the different types of DNS Records (Zone files) ( https://www.cloudflare.com/learning/dns/dns-records/) Support the Show. (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

10. 

    7 May 2024TRANSCRIPT

    6. Harnessing Load Balancers for Web Traffic Symphony

    Send us a Text Message. (https://www.buzzsprout.com/twilio/text_messages/2318484/open_sms) Imagine your website could handle the furious influx of a flash sale without breaking a sweat. That's the magic of load balancers, the unsung heroes of system design, which we dissect in this episode to help your services run smoothly even under the avalanche of high traffic. Together with industry experts, we unravel the mystery behind these traffic conductors, ensuring you grasp the significance of active-passive and active-active setups to avoid the dreaded single point of failure. We also pit hardware against software load balancers in an epic showdown, discussing how each fares in terms of performance, flexibility, and cost to help you architect a robust and scalable system. As the conversation heats up, we chart the terrain of load balancing algorithms, where each choice can lead to triumph or turmoil for your server efficiency. Get ready to be enlightened on the intricacies of weighted least connections, least response time strategies, and how real-time data can empower your system to channel web traffic with the precision of a symphony conductor. We're not just talking about keeping your digital lights on; it's about fine-tuning your system's performance to handle the crescendo of demands. So stay with us, because next time we'll be navigating the complex waters of DNS and network management, adding another layer to your growing mastery of system design. Support the Show. (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

11. 

    23 Apr 2024TRANSCRIPT

    5. Crafting Resilient Architectures with Messaging Brokers

    Send us a Text Message. (https://www.buzzsprout.com/twilio/text_messages/2318484/open_sms) Discover the secret sauce that makes software systems scalable and robust as we dissect the architecture that powers modern applications. You're about to get a masterclass in software design, where we unravel the complex world of monolithic and microservice architectures. Say goodbye to confusion around when to stick with the simplicity of a monolith and when to break free into the modular world of microservices. We'll walk you through the need for message brokers and queues in this digital maze, ensuring your journey in software scalability is as smooth as possible. Then, fasten your seatbelts as we delve into the messaging protocols that keep the world connected. MQTT and AMQP are more than just acronyms; they're the backbone of reliable communication in distributed systems. We'll demystify MQTT's retained messages and 'Last Will' features, and break down AMQP's advanced message handling that's critical in sectors like banking. This episode is jam-packed with insights that promise to elevate your understanding of the intricate dance of message exchange types and delivery processes. Tune in and equip yourself with the knowledge to architect resilient and flexible software systems. Show Notes: You can follow Diego's language podcast here: https://diversilingua.com/ (https://diversilingua.com/) Support the Show. (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

12. 

    9 Apr 2024TRANSCRIPT

    4. Databases Decoded: Elevating Data Systems with Smart Replication and Sharding Insights (part 4)

    Send us a Text Message. (https://www.buzzsprout.com/twilio/text_messages/2318484/open_sms) Unlock the full potential of your database management with our deep dive into scalability strategies that can revolutionize how you handle data growth and system performance. Jessica Ho, a sharp-minded listener, brought forth questions that led us to explore the intricate dance of read-through versus cache-aside caching. We break down when to use each technique for the utmost data consistency across varying applications. Not stopping there, we also shed light on Redis and its dual capabilities as a powerhouse in-memory data structure store, adept at enhancing your caching solution both locally and remotely. As we navigate through the labyrinth of database replication, you'll gain an understanding of the follower-leader model and its pivotal role in read-heavy applications—think TikTok or URL shorteners. We don't shy away from discussing the risks of single points of failure and the solutions like automatic failover that keep databases humming along. The conversation gets even more exciting as we delve into the advanced territory of multi-leader replication, a strategy that ups the ante on fault tolerance and caters to a global user base, reducing latency and the dread of write losses. The episode wraps with an exploration of the various sharding methods, each with its own set of benefits and hurdles. Whether it's key-based sharding, range-based sharding, directory-based sharding, or geobased sharding we help you navigate these techniques to find the best fit for your specific needs. And as a bonus, we tease what's on the horizon for our tech-savvy listeners: the enthralling world of messaging queues. Be sure to hit subscribe for this and other forthcoming topics that will arm you with the know-how to stay ahead in the tech game. Join us on this journey, and let's conquer the scalability challenge together! Support the Show. (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

13. 

    12 Mar 2024TRANSCRIPT

    3. Databases Decoded: Optimizing Your Data's Potential with Fine-Tuned Scaling and Indexing (Part 3)

    Send us a Text Message. (https://www.buzzsprout.com/twilio/text_messages/2318484/open_sms) Are your databases groaning under the weight of growing data? Let's unlock the secrets to seamless scaling and surgically precise indexing, ensuring your systems run like a finely tuned sports car. I'm Benny Kitchell, and this episode is your golden ticket to understanding when and how to scale your databases to meet the demands of your application's performance. We'll dissect the nuances of optimizing queries and why your first step should never be to shard, but to sharpen your indexing strategies. Get ready for an analogy masterclass as we liken database indices to a textbook index, simplifying this complex topic and making it digestible. From the efficiency of primary key indexing to the balancing act between clustered and non-clustered indexes, we’re peeling back the layers on how to keep your database's performance at its peak. The conversation doesn't stop there – we're also lifting the lid on the sophisticated indexing that powers giants like Google, transforming the landscape of full-text keyword searches. If you've ever wondered how your favorite search engine seems to read your mind, you'll find answers here. Then, brace yourself for a deep dive into the world of database caching strategies. From the cache aside pattern, ideal for read-heavy systems, to the intricacies of read-through, write-back, and write-around methods, I dissect their impacts on data consistency and potential for loss. Whether you’re a seasoned database architect or just getting a grip on system design, this episode is crammed with critical insights into making your database system not just robust, but ruthlessly efficient. Join me as we navigate the complexities of database scaling and optimization – it's a journey you won't want to miss. Support the Show. (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

14. 

    12 Mar 2024TRANSCRIPT

    2. Databases Decoded: A Journey from Clay Tablets to Graph Paradigms (part 2)

    Send us a Text Message. (https://www.buzzsprout.com/twilio/text_messages/2318484/open_sms) Embark on a time-traveling adventure with me, your host Benny Kitchell, as we chart the monumental shifts in database technology. From ancient civilizations etching their records into clay to the sophisticated graph databases of the present, this episode uncovers the pivotal moments that have shaped how we manage data. We'll delve into Edgar F. Codd's relational model revolution, understand the origins of the Hierarchical Model System, and discuss the impact of MongoDB's entrance into the field, all while drawing fascinating parallels to the systems we rely on today. As Oracle continues to represent the resiliency of relational databases, I'll also share a personal nod to Postgres for its robustness in the relational scene. Prepare to look under the hood of database management as we unravel the intricacies of locking mechanisms and their critical role in maintaining data integrity. I'll guide you through the maze of optimistic and pessimistic locking techniques, clarifying their distinct applications and benefits. We'll also confront the concept of durability and the essential practice of write-ahead logging, ensuring our data withstands the unexpected. The rise of NoSQL and document databases throws a welcome curveball into our discussion, challenging the traditional database dominance with their specialized use cases. Choosing the correct database type can be as complex as the data itself, but we simplify the decision-making process by breaking down the merits of document databases, especially when faced with rapidly evolving data structures. Your datas layout offers clues on whether to harness the power of relational, non-relational, or graph databases, and we'll explore when and why you might choose one over the others. To wrap up, it's a shout out to our listeners, whose insights and feedback shape our podcast's direction. If system design is the symphony, then your voices are the harmonies that enrich our collective journey into the world of database technology. Show Notes: A very special shout out to Sumaiya Asif! Edgar F. Codd's paper (https://www.seas.upenn.edu/~zives/03f/cis550/codd.pdf) Support the Show. (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

15. 

    27 Feb 2024TRANSCRIPT

    1. Databases Decoded: Charting Scalability and Overcoming Latency Battles (Part 1)

    Send us a Text Message. (https://www.buzzsprout.com/twilio/text_messages/2318484/open_sms) Embark on a journey with me, Benny Kitchell, as we chart the course through the complex waters of system design, zeroing in on the pivotal role of scalability. Imagine the chaos of a concert ticket site crashing just as sales go live; it’s a scenario I’ve lived through, and one that illustrates the high stakes of scaling. Within this episode, we dissect the anatomy of scalability, providing essential insights into how understanding both the product and user behavior is crucial for ensuring a system can handle fluctuating demands. As a veteran of the tech trenches, I share war stories and lessons learned, revealing how misguided scaling can be just as disastrous as stagnation, and how financial implications like ballooning AWS fees can catch you off guard if you’re not prepared. Then, we shift gears and plunge into the 'War on Latency', where I illuminate the strategic deployment of caching and CDNs as our primary weapons. Not only do we unravel the technical threads of these systems, but we also tune in to the melodies of Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic), punctuating our discussion with an auditory experience that transcends the typical tech talk. From the intricacies of the CAP theorem to the harmonious balance proposed by its successor, the PACELC theorem, you’ll come away from this session armed with the knowledge that’s as practical as it is profound. Prepare to be enlightened by the symbiosis of robust system design discourse and the soul-stirring tunes that underscore our technological odyssey. Support the Show. (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

16. 

    25 Feb 2024TRANSCRIPT

    Introduction

    Send us a Text Message. (https://www.buzzsprout.com/twilio/text_messages/2318484/open_sms) Embark on an expedition into the vastness of system design with your host, Benny Kitchell, an experienced engineer whose passion for crafting scalable systems is as infectious as it is informative. Together, we'll traverse the complexities of database scaling, the subtleties of caching, and the intricacies of sharding. With foresight and expertise, I promise to arm you with the knowledge to tackle the challenges of building robust systems. As the series unfolds, anticipate engaging dialogues with the masterminds behind some of the most formidable tech architectures, offering a front-row seat to the creative and adaptable world of system design. Step into a growing community where your thoughts and questions are the catalysts for our collective growth in mastering system design. As we unveil a Discord server, a space for unbridled discussion and growth, your input will help carve the path our conversations take. With each episode, including the upcoming one I'm thrilled to announce, we aim to enrich your understanding and spark your enthusiasm. Your journey in system design doesn't have to be a solo venture—join us, contribute, and let's elevate our skills in unison. Support the Show. (https://www.patreon.com/LearnSystemDesign) Dedicated to the memory of Crystal Rose. Email me at LearnSystemDesignPod@gmail.com Join the free Discord (https://discord.gg/bBCcq26ZYW) Consider supporting us on Patreon (https://www.patreon.com/LearnSystemDesign) Special thanks to Aimless Orbiter (https://soundcloud.com/aimlessorbitermusic) for the wonderful music. Please consider giving us a rating on ITunes or wherever you listen to new episodes.

Inside a recent episode

Mastering System Design Interview: Creating a Scalable Parking Garage System

Published 28 Jan 2025 · Transcript excerpt

[…] It's an easy problem for less experienced engineers to get lost in feature planning and trying to design something that has a hundred features rather than sticking to a good solid three. If you promise six, seven things, which would be easy again for this particular system, you will end up burning your entire time trying to plan for every edge case. Instead, as I've said before, focus on the bare bones of what the system is. It allows a user to reserve a spot and pay for it. So for the functional requirements, we need to have a user, and since the user will be paying us some actual money, we should actually make use of the user experience having security and authentication. […]

Reach and audience

Public platform figures. Ratings count people who left a rating, not total listeners.

YouTube views

7,912

Score snapshot 15 Sept 2025

Apple Podcasts (US)

5.0 / 5

33 ratings

Spotify

5.0 / 5

308 ratings

Podcast Authority Score: 55 / 100

A composite of feed quality, social presence, YouTube performance and engagement. Read the methodology.

Quality

44

Social presence

0

YouTube

68

Engagement

96