Скачать с ютуб Design Live Comments Feature: System Design Interview with a Meta Engineer в хорошем качестве

Design Live Comments Feature: System Design Interview with a Meta Engineer

In this systems design mock interview, a Meta engineer asks the interviewee to design a live comments feature that displays new comments as they're posted without the need for refreshing or reloading the media content. This question is roughly on par with an M1 position however it should be noted that the degree of complexity for this question can range from L5 to L8 depending on the candidate and interviewer. 👉 Sign up to book a mock interview just like this one or to watch more interviews in our showcase: https://www.interviewing.io 📖 Check out feedback from the Meta interviewer and the full transcript on https://interviewing.io/mocks/faceboo... 📘 Or view other System Design interviews: https://interviewing.io/mocks?technic... 🎨 High-level Design: https://strapi-iio.s3.us-west-2.amazo... 📙 Read our comprehensive guide to the Meta interview process: https://interviewing.io/guides/hiring... ❗ Disclaimer: All interviews are shared with explicit permission from the interviewer and the interviewee, and all interviews are anonymous. interviewing.io has the sole right to distribute this content. TIMESTAMPS 00:00 - Introductions 02:45 - Question Starts 04:25 - Functional Requirements / Features 10:05 - Non-Functional Requirements 16:50 - API Design 17:32 - Latency Requirement and comment persistence 21:00 - Data Model and Capacity Estimates 24:07 - Interviewer Questions the API Design 27:28 - Interviewer believes this is the wrong way 29:00 - High-level Design 37:10 - Interviewer calls out single point of failure (message queue) 40:05 - Interviewer questions read API connection with subscription service 41:29 - Maintaining Manually vs Relying on HTTP protocol 43:07 - Long polling vs web socket and the difference between the first and second read 44:00 - What is the responsibility of the push service 45:54 - Feedback and results (hire/no hire) 47:55 - Level implications and trade-offs 51:35 - What went well and how to improve in interviews 54:05 - Example of non-functional requirements from the interviewer 1:00:04 - What is the core puzzle? (And extra tips)