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Design a distributed job scheduler that can handle high-throughput job processing (10,000+ jobs per second), support both scheduled (cron-based) and ad-hoc job execution, include retry mechanisms for failed jobs, and maintain execution history for up to one year.
Treine requisitos, arquitetura e decisões de escala.
Design a real-time messaging system like WhatsApp or Facebook Messenger that supports 1:1 and group conversations, message delivery status tracking, user presence features, conversation history, and can scale to handle millions of users.
Treine requisitos, arquitetura e decisões de escala.
Design a system that efficiently retrieves top-k items (songs, videos, hashtags, etc.) based on user activity or engagement metrics within specified time windows. The system should handle real-time data aggregation and support queries like "top 10 songs in the last 7 days" or "trending hashtags in the past 24 hours."
Treine requisitos, arquitetura e decisões de escala.
Design a social media feed system that generates and populates personalized feeds for users on platforms like Twitter, Instagram, or Facebook.
Treine requisitos, arquitetura e decisões de escala.
Design a hotel booking system that allows users to search for hotels, make reservations, and manage bookings. Focus on data modeling and SQL queries for handling room availability, pricing, and reservation management.
Treine requisitos, arquitetura e decisões de escala.
Design a metrics aggregation system that collects count-based metrics (like user signups, system errors, ad clicks) from services via a client library and displays them as histogram data on a dashboard. The system should support querying aggregated metrics within specific time frames for monitoring and analytics purposes.
Treine requisitos, arquitetura e decisões de escala.
Design a URL shortening service similar to TinyURL that allows users to convert long URLs into short, shareable links and manage their shortened URLs.
Treine requisitos, arquitetura e decisões de escala.
Design a rate limiting system that can control and throttle API requests to prevent system overload and ensure fair resource allocation. The system should be able to handle distributed scenarios, track requests across multiple servers, and enforce limits per user/client or between internal services to prevent abuse and maintain system performance.
Treine requisitos, arquitetura e decisões de escala.
Design a scalable notification system that supports both individual and bulk notifications to multiple users. The system should handle different types of notifications including critical time-sensitive messages (like 1:1 chat) and promotional content (like system-generated recommendations) with appropriate delivery mechanisms. Consider scalability requirements (up to 1M notifications/second), expiration logic for different notification types, and the typical 80/20 distribution between critical and promotional notifications where promotional messages can target thousands of users simultaneously.
Treine requisitos, arquitetura e decisões de escala.
Design a photo-sharing social media platform where users can upload photos, follow other users, and view a chronological feed of posts from people they follow.
Treine requisitos, arquitetura e decisões de escala.
Design a file storage and synchronization system like Dropbox that allows users to upload, download, and sync files across multiple devices with real-time updates.
Treine requisitos, arquitetura e decisões de escala.
Design a ticket booking system like Ticketmaster that handles high-traffic events, supports both seated and general admission tickets, and manages scenarios like flash sales with limited inventory and concurrent users.
Treine requisitos, arquitetura e decisões de escala.
Design a ride-sharing service like Uber that allows users to request rides, matches them with nearby drivers, handles real-time tracking, and processes payments.
Treine requisitos, arquitetura e decisões de escala.
Design a collaborative document editing service similar to Google Docs where multiple users can create, edit, and share documents in real-time with concurrent editing capabilities.
Treine requisitos, arquitetura e decisões de escala.
Design an eBay-like e-commerce platform that allows users to view products, manage shopping carts, place orders, complete checkout, and process purchases.
Treine requisitos, arquitetura e decisões de escala.
Design a social media platform similar to Twitter but incorporating Amazon-style product features such as product recommendations, shopping integration, or e-commerce functionality.
Treine requisitos, arquitetura e decisões de escala.
Design a distributed caching system that can serve data with low latency across multiple geographic locations, handling cache misses, replication, and scaling to support billions of records.
Treine requisitos, arquitetura e decisões de escala.
Design a video streaming platform like Netflix that supports video playback across multiple devices (mobile, web, smart TVs) with seamless resume functionality, subscription management, personalized recommendations, and content upload capabilities.
Treine requisitos, arquitetura e decisões de escala.
1:00 de pergunta sobre o sistema de event streaming, deixaram aberto os detalhes e não se importaram muito (ex 100mil usuarios etc etc) foi mais focado para saber se eu entendia uma arquitetura como de streaming, os frameworks populares para isso e como seria a arquitetura. A cada ferramenta que falava eles perguntavam os trade-offs ou porque X e não Y.
Design an airline reservation system that allows users to search for flights, book tickets, manage reservations, and handle seat assignments and payment processing.
Design a client-side library that provides file downloading capabilities similar to Steam's game downloader, including features like download management, progress tracking, and resume functionality.
Design a system to manage waitlists for restaurants, allowing customers to join a waitlist remotely and receive notifications when their table is ready.
Design a subscribe and save feature for an e-commerce platform with 100M daily active users that allows customers to set up recurring deliveries for products and receive benefits like discounts.
Design a file system metadata structure that supports creating, organizing, and managing files and directories with appropriate hierarchical relationships.
Design a system that can analyze URLs in real-time to detect and identify malicious links, protecting users from phishing, malware, and other security threats.
Design a contacts app that ranks contacts by likelihood of engagement based on interaction history and shows real-time online/offline status.
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