TCP UDP Websocket #coding #network #protocol #tcp #udp #websocket

Ever wondered how data actually travels across the internet? 🌐📦 Every message, API request, video stream, chat notification, or banking transaction is broken into PACKETS and transmitted using communication protocols. 🚀 TCP (Transmission Control Protocol) ✔ Reliable delivery ✔ Ordered packets ✔ ACK + Retransmission ✔ 3-way handshake ✔ Error checking & flow control ✔ Used in: HTTP/HTTPS, Kafka, Databases, Banking, Email, SSH ⚡ UDP (User Datagram Protocol) ✔ Extremely fast ✔ Connectionless ✔ No handshake ✔ No guarantee of delivery ✔ Low latency communication ✔ Used in: Gaming, Video Streaming, VoIP, DNS, Live Broadcast 🔄 WebSocket ✔ Persistent TCP connection ✔ Full-duplex communication ✔ Real-time two-way messaging ✔ Starts with HTTP handshake then upgrades connection ✔ Used in: Chat apps, Live notifications, Trading systems, Multiplayer games 💡 Golden Rule: Need RELIABILITY? → TCP Need SPEED? → UDP Need REAL-TIME bi-directional communication? → WebSocket Understanding protocols is extremely important for: ✅ System Design ✅ Backend Engineering ✅ Microservices ✅ Distributed Systems ✅ Kafka & Event Streaming ✅ API Communication ✅ Cloud & DevOps Interviews Save this post for interview prep and backend fundamentals 🔥 #TCP #UDP #WebSocket #Networking #SystemDesign #BackendDevelopment #JavaDeveloper #Microservices #Kafka #SoftwareEngineering #DistributedSystems #TechExplained #Programming #DevOps #InterviewPreparation