What is RPC? Popular Science

RPC Concepts and classifications

RPC is all called remote Procedure call, which translates to "remoting procedure calls". At present, the mainstream platform supports a variety of remote call technologies to meet the remote communication and mutual invocation between different systems in the Distributed system architecture. Remote invocation scenarios are extremely extensive and are implemented in a variety of ways.

From the level of communication protocols, it can be broadly divided into:

HTTP-based protocol-based (for example, text-based soap (XML), Rest (JSON), binary hessian (binary))

TCP protocol-based (typically with high-performance network frameworks such as Mina, Netty, etc.)

From different development language and platform level, it is divided into:

A single language or platform-specific support for communication technologies such as RMI for the Java platform. NET Platform remoting)

Technologies that support cross-platform communication (such as HTTP Rest, thrift, etc.)

From the invocation process, it is divided into:

Synchronous communication calls (synchronous RPC)

Asynchronous communication calls (MQ, asynchronous RPC)

several common ways of communication

1. Remote Data sharing (for example: Sharing remote files, sharing databases, etc. to achieve different system communication)

2. Message Queuing

3. RPC (Remote Procedure Call)

Serialization/Deserialization

Only binary data can be transmitted over the network, and the definition of serialization and deserialization is:

The process of converting an object into a binary stream is called serialization,

The process of replacing binary streams with objects is called deserialization.

Common communication Technologies in the Java and. NET Platforms

The support in Java includes:

Technology	Brief introduction	Whether to support cross-platform
Corbra	90-generation products have been eliminated	Not supported
Rmi	EJB ERA product, has been gradually eliminated	Not supported
WebService	Based on HTTP SOAP, inefficient and gradually eliminated	Support
Hessain	HTTP-based, binary serialization, high efficiency, wide use	Support
Rest (spring MVC, etc.)	Support HTTP Rest, widely used in wireless API, open platform, etc.	Support
JMS, open source MQ	Java Messaging Services (message middleware), using a wide range of	Support
Socket	Based on Mina, Netty (NIO, AIO efficient communication)	Theoretically supported

. NET includes the following:

Technology	Brief introduction	Whether to support cross-platform
WebService	HTTP-based SOAP, low efficiency, gradually eliminated by WCF integration	Support
. NET Remoting	The communication efficiency is fair, the use is complex, gradually by the WCF integration elimination	Not supported
WCF SOAP	Integration of the original WebService, low communication efficiency	Support
WCF NET. Tcp	High communication efficiency, part. NET project Internal service in use	Not supported
WCF Rest	Use less, has been gradually replaced by Web API	Support
Web Api	Support HTTP Rest, widely used in wireless API, open platform, etc.	Support
MSMQ, open source MQ	Microsoft's own messaging middleware or other open source MQ	Support (except MSMQ)
Hessain. NET	HTTP-based, binary serialization, high efficiency, less use	Support
Socket	System communication via Socket network programming	Theoretically supported

common RPC technologies and frameworks in the Internet age

Application-level service framework:

Dubbo/dubbox

Zeroice

Grpc

Spring boot/spring Cloud

Basic Communication framework:

Protocol buffers

Thrift

Remote communication protocol:

Rmi

Socket

SOAP (HTTP XML)

REST (HTTP JSON)

Considerations for RPC Performance

The main factors that affect RPC performance are in several ways:

1. Serialization/deserialization Framework

2. Network protocols, network models, threading models, etc.

Safety

RPC security mainly depends on the authentication and access control support of the service interface.

Cross-platform

Across different operating systems, different programming languages and platforms.

Cross-platform RPC technology and common frameworks

SOAP WebService

Hessian

HTTP Rest

Thrift

GRPC (Protobuffer)

Zero ICE

Message middleware

What is RPC? Popular Science