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Is RPC used in microservices?
REST, RPC, and Event/Message driven are not mutually exclusive; they can all work together in your microservice architecture. If you need to communicate different internal services — try to model your processes using messages, if not possible then choose gRPC or Event/Message Driven.
How do rest Apis communicate with each other?
REST API’s only focus is on the data that belongs to that a specific domain. REST is also widely used by lot of web services and clients because it makes it easier for users to interact with the other web services. Communication on REST often happens using a JSON, which is human readable.
Why is gRPC for Inter-microservice communication?
With it, a customer can directly call methods on a server application on a different machine as if it were a local object. gRPC is based on the foundations of conventional Remote Procedure Call (RPC) technology but implemented on top of the modern technology stacks such as HTTP2, protocol buffers, etc., to ensure maximum interoperability.
What kind of communication protocol does a microservice use?
Each service instance is typically a process. Therefore, services must interact using an inter-process communication protocol such as HTTP, AMQP, or a binary protocol like TCP, depending on the nature of each service.
How does gRPC work on the client side?
When the client invokes the service, the client-side gRPC library uses the protocol buffer and marshals the remote procedure call, which is then sent over HTTP2. The server un-marshals the request and executes the respective procedure invocation using protocol buffers.
Which is way is gRPC preferable over a rest inspired HTTP API?
That framework was open sourced in 2015 under the name gRPC, and is now owned by the Cloud Native Computing Foundation. The gRPC framework addressed precisely the scenario of most of today’s microservice-style architectures. In which way is gRPC preferable over a REST-inspired HTTP API?