Low Level Design: Email Template Engine
12 min read Overview An email template engine is a system for defining, versioning, rendering, and testing email content at scale. It must […] Read article
System Design
System Design
Low Level Design: SMS Gateway
11 min read Overview An SMS gateway is the internal service that abstracts one or more upstream SMS providers (Twilio, Nexmo/Vonage, AWS SNS, Read article
System Design
Low Level Design: Push Notification Service
9 min read Overview A push notification service delivers real-time messages to mobile and web clients via platform gateways: Apple Push Notification service Read article
System Design
Low Level Design: Container Registry
10 min read What Is a Container Registry? A container registry is a storage and distribution system for container images. It stores named, Read article
System Design
Low Level Design: Travel Itinerary Service
5 min read What Is a Travel Itinerary Service? A travel itinerary service lets users plan and manage multi-component trips: flights, hotels, car Read article
System Design
Low Level Design: Flight Search Service
4 min read What Is a Flight Search Service? A flight search service aggregates schedules and prices from airlines or GDS providers, lets Read article
System Design
Low Level Design: Surge Pricing Service
5 min read What Is a Surge Pricing Service? Surge pricing (dynamic pricing) automatically adjusts ride fares based on real-time supply and demand Read article
System Design
Low Level Design: Supply-Demand Balancing Service
4 min read What Is a Supply-Demand Balancing Service? A supply-demand balancing service continuously monitors the ratio of available drivers (supply) to outstanding Read article
System Design
Low Level Design: Driver Matching Service
4 min read What Is a Driver Matching Service? A driver matching service is the real-time system responsible for pairing a rider’s trip Read article
Videos
Low Level Design: ETA Prediction Service
4 min read What Is an ETA Prediction Service? An ETA (Estimated Time of Arrival) prediction service answers the question: given a route Read article
Videos
Low Level Design: Turn-by-Turn Navigation Service
4 min read What Is Turn-by-Turn Navigation? A turn-by-turn navigation service accepts an origin and destination, computes an optimal route through the road Read article
Videos
Low Level Design: Mapping Service
4 min read What Is a Mapping Service? A mapping service provides geographic data, visual map rendering, and spatial queries to clients. Think Read article
System Design
Low Level Design: Photo Sharing Service
4 min read What Is a Photo Sharing Service? A photo sharing service lets users upload, organize, and share photographs with fine-grained access Read article
System Design
Low Level Design: Media Storage Service
4 min read What Is a Media Storage Service? A media storage service is a backend system responsible for ingesting, persisting, organizing, and Read article
System Design
Low Level Design: Referral Service
4 min read What Is a Referral Service? A Referral Service incentivizes existing users to invite new users by rewarding both parties when Read article