Tag archive

#real-time

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8 articles

System Design: Designing a Food Delivery App (Uber Eats / DoorDash)

System Design: Designing a Food Delivery App A food delivery platform (like Uber Eats, DoorDash, or Grab) is more than just an e-commerce site. It is a Three-Sided Marketplace that must coordinate between Customers, Rest…

Apr 20, 20263 min read

Deep Dive

#system-design#food-delivery#marketplace

System DesignAdvanced

System Design: Designing Nearby Friends (Real-time Geospatial Streams)

System Design: Designing Nearby Friends (Real-time Geospatial) Designing a "Nearby Friends" feature (like Snapchat's Snap Map or Facebook's Nearby Friends) is a unique challenge. Unlike Yelp or Uber, where the entities (…

Apr 20, 20263 min read

Deep Dive

#system-design#geospatial#real-time

System DesignAdvanced

System Design: Designing a Real-Time Analytics Dashboard

System Design: Designing a Real-Time Analytics Dashboard Real-time analytics dashboards (used for tracking game players, ad clicks, or server metrics) require capturing and visualizing massive data streams. The challenge…

Apr 20, 20262 min read

Deep Dive

#system-design#analytics#real-time

System DesignAdvanced

System Design: Designing a Real-time Recommendation Engine (TikTok / Netflix)

System Design: Designing a Real-time Recommendation Engine A recommendation engine is the "secret sauce" behind platforms like TikTok, Netflix, and Amazon. Its goal is to predict what a user will like next based on their…

Apr 20, 20263 min read

Deep Dive

#system-design#recommendation-engine#ai

System DesignAdvanced

WebSocket Fleet Management: Handling Millions of Connections

WebSocket Fleet Management WebSocket systems look easy in local testing and become complex in production when you handle millions of long-lived connections across regions, devices, and flaky mobile networks. The challeng…

Apr 20, 20264 min read

Deep Dive

#websockets#real-time#distributed-systems

System DesignAdvanced

WebSocket and SSE for Real-Time Systems: Architecture and Production Patterns

Real-time features — live notifications, collaborative editing, live dashboards, streaming data — require pushing data from server to client without the client repeatedly polling. HTTP polling wastes resources and adds l…

May 4, 20257 min read

Deep Dive

#websocket#sse#real-time

Data EngineeringAdvanced

Kafka Streams: Real-Time Stream Processing Without a Separate Cluster

Kafka Streams is a Java library for building real-time stream processing applications. Unlike Flink or Spark Streaming, it has no separate cluster — it runs as a library inside your Java application. Each instance of you…

Apr 24, 20256 min read

Deep Dive

#kafka#kafka streams#stream processing

System DesignAdvanced

System Design: Real-Time Chat Application at Scale

Real-time chat systems are among the most architecturally interesting distributed systems. They require persistent connections at massive scale, exactly-once message delivery guarantees, presence detection across million…

Mar 17, 202511 min read

Deep Dive

#system design#websocket#real-time