⏱ 5 min read Requirements A gaming backend handles player authentication, matchmaking (pairing players of similar skill), real-time game state synchronization, leaderboards, and player […] Read article

⏱ 5 min read Core Entities Driver: driver_id, user_id, vehicle_id, license_number, status (OFFLINE, AVAILABLE, ON_TRIP), current_lat, current_lng, last_location_update, rating, total_trips, acceptance_rate. Vehicle: vehicle_id, driver_id, Read article

⏱ 5 min read Requirements A media storage and delivery system stores uploaded videos or images and delivers them efficiently to users worldwide. Think Read article

⏱ 8 min read Core Entities Hotel: hotel_id, name, address, star_rating, amenities (JSON array), check_in_time, check_out_time. RoomType: type_id, hotel_id, name (STANDARD, DELUXE, SUITE, PENTHOUSE), Read article

⏱ 7 min read Requirements A typeahead service returns query suggestions as the user types. Google Search autocomplete, Twitter’s hashtag completion, and Stripe’s dashboard Read article

⏱ 8 min read Core Entities User: user_id, username (unique, URL-safe), email, password_hash, display_name, bio, avatar_url, role (READER, AUTHOR, EDITOR, ADMIN), created_at. Post: post_id, Read article

⏱ 8 min read Core Requirements A file sharing platform allows users to upload, organize, and share files and folders. Key features: file upload/download, Read article

⏱ 7 min read Requirements and Scope An appointment scheduling system allows users (customers) to book time slots with service providers (doctors, barbers, consultants). Read article

⏱ 7 min read Core Entities Company: company_id, name, description, logo_url, website, size, industry, verified (boolean). Job: job_id, company_id, title, description, location, is_remote, employment_type Read article

⏱ 6 min read Requirements A live comments system allows users to post comments on content (articles, videos, livestreams) and see other users’ comments Read article

⏱ 5 min read Core Entities Contact: contact_id, first_name, last_name, email (unique), phone, company_id, job_title, source (INBOUND, OUTBOUND, REFERRAL), owner_id (assigned sales rep), created_at, Read article

⏱ 7 min read What is a Workflow Engine? A workflow engine executes multi-step processes where steps have dependencies, can run in parallel, and Read article