How to upload file to gRPC server using streaming and Spring Boot.

In today’s world of distributed systems and microservices architecture, communication between different services plays a vital role. One of the common scenarios in microservices architecture is uploading files from the client to the server. While there are several ways to implement file uploading, gRPC client streaming provides an efficient way to upload large files in a distributed environment.

In this article, we will explore how to implement file uploading using gRPC client streaming and SpringBoot. We will discuss the step-by-step process of implementing client streaming in gRPC. Additionally, we will demonstrate how to integrate this implementation with a SpringBoot application and provide an end-to-end solution for uploading files. So let’s dive in!

Client side

gRPC is an open-source remote procedure call (RPC) framework that uses Protocol Buffers as its data format. Protocol Buffers are a language-agnostic mechanism for serializing structured data, making them a perfect fit for distributed systems that use multiple programming languages. Below we are defining our gRPC proto contract.

Start with add gRPC client auto configuration library to our pom.xml

<dependency>
   <groupId>net.devh</groupId>…