TCP vs UDP for Market Data - Quant Trader Interview Question
Difficulty: Easy
Category: Networking & Systems
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Topics: networking, systems, latency, market-data
Problem Description
Most market data feeds rely on UDP multicast rather than TCP. What is the primary reason for this design choice?
Consider the properties of each protocol in the context of high-frequency trading:
TCP: Transmission Control Protocol. Provides reliable, ordered, and error-checked delivery of a stream of bytes between applications running on hosts communicating via an IP network.
UDP: User Datagram Protocol. Provides a connectionless datagram service that prioritizes speed and efficiency over
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