![]() REST’s separation of concerns for the client and server makes it attractive for many projects, including mobile and web development terms. This interoperability between systems makes web services very popular in modern software development – REST APIs in particular. For example, a client application written in Python can interact with an API server written in Java. The HTTP protocol used by REST APIs allows platforms and systems written in different programming languages to interact with one another. Using this protocol, a client sends an HTTP request for data to an API Server, and then the server sends an HTTP response with encoded data back to the client. Web services deal with the interaction between client applications and API servers. A REST API is a web service because it uses HTTP protocol to transmit messages. REST APIs use HTTP 1.1 protocol for data transmission. Finally, they determine the communication mode, communication protocol, payload format, and the entities exposed by the API (data object vs. They tell the client what response to expect from the API based on a specific input. An architectural style determines how clients structure requests and what parameters can be sent to affect the server response. In other words, they determine how clients access and manipulate data the API exposes. In summary, RESTful APIs adhere to REST architectural standards and practices, while gRPC APIs adhere to gRPC standards.Īrchitectural styles define the interaction between clients and API servers. ![]() gRPC APIs must be general purpose, performant, payload agnostic, and support multiplexed streaming. For example, REST APIs must follow REST principles such as client-server separation, statelessness, and cachability. ![]() ![]() REST and gRPC are API architectures that constrain API design according to distinct architectural principles. An API architectural style is a model, or set of rules, for building an API. ![]()
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