WebSocket is a communication protocol that enables a full-duplex, continuously open connection between a client (typically a browser) and a server. Unlike the HTTP protocol, which re-establishes a connection for each data exchange, WebSocket allows real-time data transmission over a single persistent connection.
What Is It Used For?
WebSocket is used in applications where real-time data transmission is essential. It allows the server and client to instantly receive data from each other, offering users a fast and seamless experience.
Use Cases:
- Live chat applications
- Online multiplayer games
- Real-time stock market data in financial apps
- Instant notification systems
- Collaborative document editing (e.g., Google Docs)
Why Is It Important?
- Enables real-time data transmission
- Works with lower latency and less data overhead compared to HTTP
- Allows the server to “push” data to the client (without waiting for a request)
- More efficient for long-lasting connections