Microservices may work together even if they were written in different programming languages and running on different platforms. The functions can work and interact with each other, and you can add more and more functions or microservices. An API defines the types of calls and requests one application can make to another, how to make those requests, the data formats to be used, and the conventions clients must follow.Įssentially, APIs make it possible for applications to be used in larger systems by connecting multiple functions. Is there a good reason REST is more popular? If you want to understand REST and gRPC, there are a few things you need to know before we dive into the differences.ĪPIs, or application programming interfaces, provide rules and definitions that allow applications to communicate and interact with each other. Need an API? Did you know you can generate a full-featured, documented, and secure REST API in minutes using DreamFactory? Sign up for our free 14 day hosted trial to learn how! Our guided tour will show you how to create an API using an example MySQL database provided to you as part of the trial!Ĭreate your REST API Now What Does REST Have Over gRPC? Frequently Asked Questions: gRPC vs REST.What Are Microservices-Based Applications?.Understanding the Architectural Styles in APIs.Streaming: gRPC supports bidirectional streaming, whereas REST is limited to request-response communication patterns.API design: gRPC is based on the RPC (Remote Procedure Call) paradigm, while REST follows the architectural constraints of the Representational State Transfer model.Data format: gRPC employs Protocol Buffers for serialization, while REST usually leverages JSON or XML.Protocol: gRPC uses HTTP/2 for transport, while REST typically uses HTTP/1.1.Here are the main differences between gRPC and REST: You’ll learn what gRPC is, why people use it, and how a gRCP API compares to a RESTful API. Whether you’re trying to figure out what “gRPC” means or you’re considering gRPC as an alternative to REST APIs for your next development project, this guide will help you understand. gRPC is more efficient and suitable for complex microservices and real-time applications, while REST is more widely adopted and simpler to use for basic APIs. gRPC is a high-performance, binary, and strongly-typed protocol using HTTP/2, while REST is a simpler, text-based, and stateless protocol using HTTP with JSON/XML. In fact, this approach is in use in etcd and Istio.Īnd if you enjoyed the build process for your gRPC gateway, consider diving deeper with Earthly to further simplify your build process.If you’re at all familiar with APIs, you know that REST APIs are the main API used, particularly when it comes to microservices and their applications. And with the certs in place, this gRPC + REST service is not even that big of a lift from a standard gRPC end-point. Rest to gRPC in three ways, with all the complicated bits documented in a runnable Earthfile. The first thing I need to do is get the gRPC gateway plugin:įunc main() Conclusion And to get that working, I’m going to have to learn a bit about TLS, cert generation, and HTTP/2. I’ll change my original gRPC service to answer both REST and gRPC requests over the same port. Assuming you have a shared backing database, you could use this solution to scale the REST end-point separately from the gRPC end-point. Second I’ll build a REST service, using the same proto file, and that uses the same implementation as the existing gRPC service. You can use it to proxy to any service that speaks gRPC. It’s also the only way I’ll cover that will work with a non-golang service. This method is excellent if you have a gRPC service that you don’t want to touch. I’ll first build a proxy using grpc-gateway and an existing proto file. And for fun, I’m going to do it three ways. So today, I’m going to build a gRPC gateway that accepts HTTP requests and proxies it through to my gRPC service. Last time I moved my service from REST to gRPC, but there are times when a simple REST end-point is still needed. ![]() ![]() I’m an experienced developer learning Golang. Exploring gRPC gateway methods? Earthly simplifies your build process for gRPC services.
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