Learn with Microservice Application Layer Protocols

“Oil painting of mountains in the Brecon Beacons, autumn-coloured purple by the weather-coarsed heather”. -referenced from here

Application Layer protocols

• Application Layer
• HTTP/HTTPS
• RPC
• RSocket
• WebSocket

Application Layer protocol - HTTP/S

There are many architectural styles or standards to design an Web Service application based on HTTP/S. Below are some are the most popular ones.

• REST: REST is just a style, but RESTful API is satisfying a standardised set of 6 constraints
  • HATEOAS constraint
• SOAP: a standard protocol of web service, using XML format data
• GraphQL: a standard set of schema, tools for API style. It can be used in REST style applications, however it loses some constraints, like HATEOAS.

Application Layer protocol - RPC

• Java RMI
• gRPC

Application Layer protocol - RSocket

• RSocket.io

Interface Description Language IDL

• Protocol Buffers
• Apache Avro
• Apache Thrift
• OpenAPI
• JSON WSP
• WADL XML
• WSDL XML

Reference