https://interviewready.io/learn/system-design-course/building-an-ecommerce-app-1-to-1m/1-what-is-system-design https://cdn.interviewready.io/lesson-videos/v1/1027797698/poster.jpg #1: System Design, Requirements and APIs Introduces system design through an e-commerce example: a T-shirt seller outgrows Shopify's payment and delivery integrations, leading to custom pages, a server and simple JSON APIs. https://cdn.interviewready.io/lesson-videos/v1/1027797698/720p.mp4 500 2024-11-08T20:33:04.129Z yes https://interviewready.io/learn/system-design-course/building-an-ecommerce-app-1-to-1m/2-hosting-the-application-servers https://cdn.interviewready.io/lesson-videos/v1/1027797823/poster.jpg #2: Hosting: Server or Serverless Compares self-hosting on a spare computer with renting cloud compute, then weighs managed servers against serverless for a small e-commerce startup and explains why serverless is chosen. https://cdn.interviewready.io/lesson-videos/v1/1027797823/720p.mp4 267 2024-11-09T13:36:35.200Z yes https://interviewready.io/learn/system-design-course/building-an-ecommerce-app-1-to-1m/3-webpages-and-cdn https://cdn.interviewready.io/lesson-videos/v1/1027806031/poster.jpg #3: CDNs, DNS and Choosing a Database Explains serving static pages from a CDN such as CloudFront with S3 as the source, keeping dynamic data on the server, resolving a custom domain through DNS and Route 53, and choosing a startup database. https://cdn.interviewready.io/lesson-videos/v1/1027806031/720p.mp4 580 2024-11-09T13:35:05.340Z yes https://interviewready.io/learn/system-design-course/building-an-ecommerce-app-1-to-1m/4-debugging-in-the-trenches https://cdn.interviewready.io/lesson-videos/v1/1027839958/poster.jpg #4: Logging, Monitoring and Single Points of Failure Shows how request-level logging with CloudWatch and dashboards such as Google Analytics speed up debugging, then identifies single points of failure in the store's architecture and how to handle them. https://cdn.interviewready.io/lesson-videos/v1/1027839958/720p.mp4 445 2024-11-15T13:11:42.585Z yes https://interviewready.io/learn/low-level-design-course/building-a-game-engine/the_need_for_good_coding_practices https://cdn.interviewready.io/lesson-videos/v1/1037440844/poster.jpg What is Low Level Design? Defines low level design as a mix of design and coding and introduces readability, extensibility and correctness as the three measures of good code. https://cdn.interviewready.io/lesson-videos/v1/1037440844/720p.mp4 204 2023-12-15T23:23:45.304Z yes https://interviewready.io/learn/low-level-design-course/building-a-game-engine/introduction-to-low-level-design-series https://cdn.interviewready.io/lesson-videos/v1/895434873/poster.jpg Introduction to Low Level Design Series Introduces the low level design series, which covers guiding principles such as SOLID, inheritance and composition, and design patterns, through building a turn-based game AI engine. https://cdn.interviewready.io/lesson-videos/v1/895434873/720p.mp4 131 2023-12-17T03:38:43.639Z yes https://interviewready.io/learn/low-level-design-course/building-a-game-engine/setting_requirements_and_objects https://cdn.interviewready.io/lesson-videos/v1/891330733/poster.jpg Setting Requirements and Objects A turn-based game AI engine is written without any upfront design, defining start, move and isComplete APIs and a tic-tac-toe board whose win-checking logic grows into nested loops and conditions. https://cdn.interviewready.io/lesson-videos/v1/891330733/720p.mp4 784 2023-12-15T19:35:44.430Z yes https://interviewready.io/learn/low-level-design-course/building-a-game-engine/api_and_package_structuring https://cdn.interviewready.io/lesson-videos/v1/891331038/poster.jpg API and Package Structuring The tic-tac-toe game engine is refactored by moving classes into separate files and packages, turning the main class into a GameEngine API, and replacing direct array access with a getter. https://cdn.interviewready.io/lesson-videos/v1/891331038/720p.mp4 590 2023-12-15T19:36:10.321Z yes https://interviewready.io/learn/ai-engineering/who-is-this-course-for/course-intro https://cdn.interviewready.io/lesson-videos/v1/1087367958/poster.jpg Course Intro Course introduction covering the two main topics, large language models and vector databases, the intended audience of engineers and product leads, prerequisites, assignments and completion certificate. https://cdn.interviewready.io/lesson-videos/v1/1087367958/720p.mp4 120 2025-06-03T09:15:41.984Z yes https://interviewready.io/learn/ai-engineering/what-are-vectors/how-are-vectors-constructed https://cdn.interviewready.io/lesson-videos/v1/1086196429/poster.jpg How are vectors constructed Explains how documents are plotted as points by their properties, why the number of dimensions is fixed (4,096 for Llama), how a neural network is trained to place similar objects close together, and when fine tuning the vectorisation is worth it. https://cdn.interviewready.io/lesson-videos/v1/1086196429/720p.mp4 403 2025-06-03T09:22:12.996Z yes https://interviewready.io/learn/ai-engineering/what-are-vectors/choosing-the-right-db https://cdn.interviewready.io/lesson-videos/v1/1087564797/poster.jpg Choosing the right DB Explains why one dimensional indexes and ACID guarantees do not help with vector search, then weighs pgvector, a newer open source option and managed services such as Vertex AI and OpenSearch on fit, understanding and cost. https://cdn.interviewready.io/lesson-videos/v1/1087564797/720p.mp4 206 2025-06-03T09:23:50.611Z yes https://interviewready.io/learn/ai-engineering/what-are-vectors/vector-compression https://cdn.interviewready.io/lesson-videos/v1/1087564673/poster.jpg Vector compression Explains why comparing a query with every document vector is too slow, then shows two fixes: compressing each dimension to two bits and clustering vectors around centroids, together known as quantisation. https://cdn.interviewready.io/lesson-videos/v1/1087564673/720p.mp4 206 2025-06-03T09:27:19.889Z yes https://interviewready.io/learn/behavioural-interview-course/STAR-pattern/Why-is-STAR-used https://cdn.interviewready.io/lesson-videos/v1/768504640/poster.jpg Why is STAR used? Explains why structured interviews such as the STAR technique are preferred over traditional interviews, and why competencies rather than IQ explain differences in job performance. https://cdn.interviewready.io/lesson-videos/v1/768504640/720p.mp4 164 2022-11-08T14:34:43.380Z yes https://interviewready.io/learn/behavioural-interview-course/STAR-pattern/What-is-the-STAR-pattern https://cdn.interviewready.io/lesson-videos/v1/768502693/poster.jpg What is the STAR pattern Explains the STAR technique for behavioural interviews, covering what an interviewer wants to learn from the situation, task, action and result in a candidate's story. https://cdn.interviewready.io/lesson-videos/v1/768502693/720p.mp4 244 2022-11-08T14:35:51.182Z yes https://interviewready.io/learn/system-design-advanced/networks-deep-dive/breakdown-network-layers https://cdn.interviewready.io/lesson-videos/v1/1234917243/poster.jpg Breakdown: Network Layers Breaks a computer network into three layers, physical, routing and behavioural, using a mirror and a post box as examples, and maps them onto the OSI model. https://cdn.interviewready.io/lesson-videos/v1/1234917243/720p.mp4 653 2026-10-15T10:43:41.906Z yes https://interviewready.io/learn/system-design-advanced/networks-deep-dive/internal_routing_mac_addresses_and_nat https://cdn.interviewready.io/lesson-videos/v1/1234917253/poster.jpg Internal routing: MAC addresses and NAT Explains why Google's pages are cached in content delivery networks around the world, then shows two ways a router returns a response to the right internal machine: network address translation and a MAC address table. https://cdn.interviewready.io/lesson-videos/v1/1234917253/720p.mp4 413 2026-10-15T10:43:41.906Z yes https://interviewready.io/learn/system-design-advanced/networks-deep-dive/head_of_line_blocking https://cdn.interviewready.io/lesson-videos/v1/1234917262/poster.jpg Head of line blocking Explains head of line blocking with a queue of acknowledged messages, how HTTP 2.0 multiplexing splits messages into streams and frames, why a shared TCP connection still blocks, and how HTTP 3.0 (QUIC) over UDP removes the problem. https://cdn.interviewready.io/lesson-videos/v1/1234917262/720p.mp4 316 2026-10-15T10:43:41.906Z yes https://interviewready.io/learn/system-design-advanced/networks-deep-dive/video_transmission_web_rtc_and_http-dash https://cdn.interviewready.io/lesson-videos/v1/1234917523/poster.jpg Video transmission: WebRTC and HTTP-DASH Explains why video must be sent in packets, how HTTP-DASH and HLS adapt resolution to the client and its network over TCP, and how WebRTC over UDP lets browsers conference directly, with STUN, TURN and media servers mentioned. https://cdn.interviewready.io/lesson-videos/v1/1234917523/720p.mp4 609 2026-10-15T10:43:41.906Z yes