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What are the differences between web sockets as well as REST?

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REST Web Socket
REST follows stateless architecture, meaning it won’t store any session-based data. Web Socket APIs follow the stateful protocol as it necessitates session-based data storage.
The mode of communication is uni-directional. At a time, only the server or the client will communicate. The communication is bi-directional, communication can be done by both client or server at a time.
REST is based on the Request-Response Model. Web Socket follows the full-duplex model.
Every request will have sections like header, title, body, URL, etc. Web sockets do not have any overhead and hence suited for real-time communication.
For every HTTP request, a new TCP connection is set up. There will be only one TCP connection and then the client and server can start communicating.
REST web services support both vertical and horizontal scaling. Web socket-based services only support vertical scaling.
REST depends on HTTP methods to get the response. Web Sockets depend on the IP address and port number of the system to get a response.
Communication is slower here. Message transmission happens very faster than REST API.
Memory/Buffers are not needed to store data here. Memory is required to store data.
 

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