Golang Grpc

gRPC powered micro-service in golang; Protecting golang micro-service with keycloak; Writing java client to talk with our golang micro-service. For more information see the gRPC Quick Start: Go guide. proto 文件进行编译处理。 官方文档 写的挺全面了。 类似其它 RPC 框架,gRPC 的库在服务端提供一个 gRPC Server,客户端的库是 gRPC Stub。典型的场景是客户端发送请求,同步或异步调用服务端的接口。. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected] We are going to use a gRPC-proxy to generate client front-end proxies for us. At last, we configure our Traefik instance to use both self-signed certificates. They can be used interchangeably based on what flavor of protobuf you decided to use. gRPC is a modern, open source, high-performance remote procedure call (RPC) framework that can run anywhere. After that, we can fill in our interactions with those hooks. One of the primary requirements for the systems we build is something we call the "minimum security requirement". The Go Playground is a web service that runs on golang. Running a Keras / TensorFlow Model in Golang 02 April 2018 on MachineLearning, Golang, Deep Learning, TensorFlow, Keras. Getting Started with Microservices using Go, gRPC and Kubernetes Tin Rabzelj 27 October, 2017 This article aims to provide a simple introduction to building microservices in Go, using gRPC, and deploying them to a Kubernetes cluster. Last weeks ago, I already post about clean architecture in golang. StreamDesc - Represents a streaming RPC service’s method specification. Microservices based webapplication in golang using grpc. Protobuf is a thing for serializing structured data that Google made for the impatient world (meaning it's fast and efficient). RPC is a method for executing a procedure on a remote server, somewhat akin to running a program on a friend's computer miles from your workstation. type Shaper interface { Area() int } type Rectangle struct { length, width int } //this function Area works on the type Rectangle and has the same function signature defined in the interface Shaper. key 2048 Generating RSA private key, 2048 bit long modulus. A few a months ago, I was creating a simple library in golang, to help golang engineers when testing their function. desc *grpc. to ensure maximum interoperability. HTTP server. The Go implementation of gRPC: A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. In order to generate a solution to build the Bond Core C++ and Python with Visual Studio 2015 run the following commands from the root bond directory:. For an overview of gRPC and protocol buffers see the official gRPC docs gRPC overview. Status represents an RPC status code, message, and details. gRPC is a technology to allow calling server functions from a client, possibly from a different system. proto files > Generate Server & Client Code in Golang using the Gradle gRPC plugin. [Stephane Maarek] -- "gRPC is a new and modern framework for building scalable, modern, and fast APIs. gRPC Golang Master Class is the best way to get a great overview of all the possibilities offered by gRPC with your favourite language > Learn the gRPC theory to understand how gRPC works > Compare gRPC and REST API paradigm > Write your gRPC service definition in. So, when to use REST, and when to use RPC? The Comparison. 7 and above). However, if you want the Bookstore to accept HTTP requests as well, you need to do some extra configuration for ESP. networking gRPC golang. To install this package, you need to install Go and setup your Go workspace on your computer. A few month back, I started my journey learning gRPC. See the installation documentation. versions [more versions can be listed by madison] [old versions available from snapshot. gRPC works particularly well with protocol buffers and lets you generate the relevant RPC code directly from your. 海量互联网业务系统只能依赖分布式架构来解决,而分布式开发的基石则是RPC;本文主要针对两个开源的RPC框架(gRPC、 Apache Thrift),以及配合GoLang、C++两个开发语言进行性能对比分析。. Golang Generation. gRPC is a modern, open source, high-performance remote procedure call (RPC) framework that can run anywhere. euyyn on Jan 26, 2018 When I looked into Thrift's generated code for Objective-C when we started working on gRPC (so 2014), RPCs were all blocking, which made for a non-idiomatic API. The pre-built libraries are only needed for unit tests, Python, and gRPC support. Introduction. 步骤7 从google/protobuf下载protoc 这是生成指定语言相关类的工具 我下载的是windows版本的就是一个zip文件 zip解压后的exe文件存在环境变量路径中. See what people are saying and join the conversation. To some of those concerns, we did early on pipe gRPC through ELBs and did rapidly find out that was a bad idea. Obviously, TCP is popular because it’s the core network layer under the HTTP protocol which proudly powers most of the internet. Package Source Documentation; google. We've used gRPC heavily and our experiences with it have generally been good, especially grpc-go (grpc-python has been a little more frustrating). We didn’t use a database for this example, but we saw how to create a data model, query it, and manipulate data via some kind of GraphQL mutation. Go Secure Hello World Example. 1 or browsers with gRPC-Web. This package supports Node. From Monolith to Microservice: Building APIs with gRPC & golang Case study & tutorial on how to break up a legacy monolith codebase into microservices using gRPC + Protobuf + golang + the language of your choice!. However, with the gRPC plugin, you get generated gRPC client and server code, as well as the regular protocol buffer code for populating, serializing, and retrieving your message types. Package Source Documentation; google. All gists Back to GitHub. Context - This is the request context and will be used primarily for timeouts. proto files using a special protocol buffer compiler plugin. Golang, along with gRPC using Protobuf is an emerging stack for modern server programming. grpcurl is a command-line tool that lets you interact with gRPC servers. GraphQL wasn’t developed for Graph databases, but its graph-like query syntax, schema validation and subgraph shaped response make it a great language choice. Golang: testing http and grpc servers. Package rpc provides access to the exported methods of an object across a network or other I/O connection. Using gRPC with Mutual TLS in Golang 2016/11/01. org/grpc: github. In the blog aforementioned I talked about how easy it was to get started with that in golang. We added code and complexity to the Go distribution, but on balance we simplified the experience of writing Go programs. Next Steps To recap, our goal through this exercise was to see how closely we could get to a Lambda successfully responding to a gRPC client's request, without modifying the client. com/protocolbuffers/protobuf/releases/tag/v3. Get this from a library! gRPC (Golang) master class : build modern API and microservices. Aplikasi client akan berkomunikasi dengan kedua aplikasi server. Install Protocol Buffers. Google App Engine でgRPCを使うためのgRPC Web #golang #gcpja. We'll look at this example in more detail below. Universal server push middleware by using gRPC stream and Server Sent Events(SSE) Plasma is middleware for sending event specialized for a stream. This part of our series on deploying NGINX Plus as an API gateway - along with its other rich functionality - focuses on gatewaying gRPC services. I went through the same question of finding a good binary RPC protocol library that would support multiple languages (primarly Java and JavaScript in my case) On Codiva. gRPC provides support for implementing streaming endpoints as well as streaming support in their clients. Context - This is the request context and will be used primarily for timeouts. Writing maintainable Golang, a Go e-commerce guide, starting with gRPC & more This article is a beginner’s guide to understanding interfaces in Golang, and its. Applications. The simplest way to install. It's basically curl for gRPC servers. I will discuss the strong typing later, but just from a performance point of view, Protobuf is a very efficient and packed format. We will develop two microservice. As requests for rides are created by users the. proto files > Generate Server & Client Code in Golang using the Gradle gRPC plugin. Remote procedure call (RPC) architecture is popular in building scalable distributed client/server model based applications. gRPC Golang Master Class is the best way to get a great overview of all the possibilities offered by gRPC with your favourite language > Learn the gRPC theory to understand how gRPC works > Compare gRPC and REST API paradigm > Write your gRPC service definition in. While in the process of building out a scalable microservice. Using gRPC with Mutual TLS in Golang 2016/11/01. Pure Python Gevent RPC & golang RPC. The method Serve accepts incoming connections on the given listener, creating a new. A diagram from the grpc-gateway GitHub project site effectively demonstrates how the reverse proxy works. Mapping from HTTP request headers to gRPC client metadata You might not like the default mapping rule and might want to pass through all the HTTP headers, for example. desc *grpc. Data between a client and server can even be streamed continuously. The main purpose for this tool is to invoke RPC methods on a gRPC server from the command-line. gRPC introduction what is gRPC why we us gRPC HTTP 1. I know there are ways to run HTTP/2 on non-tls, but it's non-standard. Source Archives. Не думали разбить docker на builder и executor чтобы в контейнере с работющим сервером не было возможности скомпилировать исходники ?. Golang, gRPC and friends. Currently, the gRPC call is being sent over cleartext to Ambassador which proxies it to the gRPC application. I agree to the Code of Conduct. gRPC [Golang] Master Class: Build Modern APIs and Microservices is the best way to get a great overview of all the possibilities offered by gRPC with your favourite language. Dan yang satu adalah aplikasi client. This sample project will show you, the clean concept. [Stephane Maarek] -- "gRPC is a new and modern framework for building scalable, modern, and fast APIs. http2-client-grpc. This part of our series on deploying NGINX Plus as an API gateway - along with its other rich functionality - focuses on gatewaying gRPC services. If the program contains tests or examples and no main function, the service runs the tests. gRPC shines when it comes to sending a bunch of messages here and there. We'll look at this example in more detail below. http2-client-grpc. Package rpc provides access to the exported methods of an object across a network or other I/O connection. The Go language implementation of gRPC. Go gRPC Auth Support. Compared to writing grpc protobuf definitions, they're a gigantic pain; gRPC compared to Thrift. I am sure gRPC is a very good project and it fits perfect to golang (on server side), that's the reason I started a project to realize what i miss, but it is in an early state and not yet public. gRPC is transported over HTTP/2, either in cleartext or TLS‑encrypted. A gRPC server, and a separate plain HTTP/2 server for a "health check. Go is an open source programming language that makes it easy to build simple, reliable, and efficient software. Cool! And you want to use mutual TLS, too. Next Steps To recap, our goal through this exercise was to see how closely we could get to a Lambda successfully responding to a gRPC client's request, without modifying the client. StreamDesc - Represents a streaming RPC service's method specification. The framework uses HTTP/2 , the latest network transport protocol, primarily designed for low latency and multiplexing requests over a single TCP connection using streams. A gRPC channel is created to communicate with the server in order to call RPC methods. Golang, along with gRPC using Protobuf is an emerging stack for modern server programming. 09 February 2017 on golang, coding, basics, json, unit testing, golang basics In the previous post titled "Grab JSON from an API" we explored how to interact with a HTTP client and parse JSON. From Monolith to Microservice: Building APIs with gRPC & golang Case study & tutorial on how to break up a legacy monolith codebase into microservices using gRPC + Protobuf + golang + the language of your choice!. Golang: Run multiple services on one port Ever faced the problem of having multiple ports in an application, one for each service? In this post, I'm going to brief about how to run multiple services via the same listener port. conn, err := grpc. Go, which is also referred to as “Golang,” is a compiled systems-oriented programming language started by Google in 2007. This sample project will show you, the clean concept. PREREQUISITES. Join Gophers on Slack. Writing java client to talk with our golang micro. 7 and above). The curl project mostly provides source packages. Here’s a summary: Converge uses HCL for syntax. Cool! And you want to use mutual TLS, too. Getting Started with Microservices using Go, gRPC and Kubernetes Tin Rabzelj 27 October, 2017 This article aims to provide a simple introduction to building microservices in Go, using gRPC, and deploying them to a Kubernetes cluster. is a mock ride-sharing system built on top of gRPC. See Tweets about #gRPC on Twitter. Introduction "gRPC is a modern, open source remote procedure call (RPC) framework that can run anywhere. Restrictive formats like "IP+port tuple" will annoy users who want to run your code as part of a larger framework or integration test, which may have its own ideas about network addresses. I went through the same question of finding a good binary RPC protocol library that would support multiple languages (primarly Java and JavaScript in my case) On Codiva. conn, err := grpc. These are the most basic forms of RPC services that can be defined with gRPC. ctx context. gRPC [Golang] Master Class: Build Modern APIs and Microservices is the best way to get a great overview of all the possibilities offered by gRPC with your favourite language. gRPC introduction what is gRPC why we us gRPC HTTP 1. At the time of this post, gRPC supports Java, C++, Python, Objective-C, C#, a lite-runtime (Android Java), Ruby, JavaScript and Go - using the golang/protobuf library. RPC is a method for executing a procedure on a remote server, somewhat akin to running a program on a friend's computer miles from your workstation. I heard about gRPC some months ago and decided to learn a bit about it. Over the last few years, Golang has become a very popular language, being the language of choice for projects such as Docker, Kubernetes, and all of Hashicorps suite of programs. It offers libraries in most widely used languages (Java, Node. This is the only API where gRPC C/C++ uses its own worker threads to support RPCs Asynchronous API Client or server threads can use a CompletionQueue to wait for events (read/write/response notifications, alarms). For gRPC this means that an instance of gRPC client will open a TCP connection to an instance of a gRPC server, sends the requests to and receives the responses from the same connection, and it keeps the connection open until the connection is closed. WithInsecure()) Add certificates, otherwise the base level HTTP libraries won't kick in HTTP/2, and you'll be stuck opening new TCP connections for most new connections. Package Source Documentation; google. GoLang Golang is the new benchmark in the performance of a distributed / concurrent app, you can think of it as C, but much easier to learn and does not need LibC. v2-dev golang-yaml. Package credentials implements various credentials supported by gRPC library, which encapsulate all the state needed by a client to authenticate with a server and make various assertions, e. In our Go code we initially supported both HTTP/1. It offers libraries in most widely used languages (Java, Node. In this tutorial, we will implement an RPC client/server model using Google's gRPC and Protocol Buffers. org/grpc: github. They are compatible to the parameters with same names in protoc-gen-go. To facilitate this functionality, there are four primary types of RPCs that can be specified with gRPC. 🙂 What is gRPC: gRPC stands for Google Remote Procedure Call. Pada bab ini kita akan belajar tentang penerapan gRPC dan protobuf pada bahasa golang. To install this package, you need to install Go and setup your Go workspace on your computer. Build microserviceBuild microservice with gRPC in Golangwith gRPC in Golang David Chou 2. As mentioned earlier, the GopherJS gRPC-Web bindings (for now) require a small proxy in front of a generic gRPC server. Except as noted, the content of this page is licensed under the Creative Commons Attribution 3. Unity_gRPC_Sample. Google App Engine でgRPCを使うためのgRPC Web #golang #gcpja. A few a months ago, I was creating a simple library in golang, to help golang engineers when testing their function. A system to synchronize camera position and rotation in Unity and Go on Mac. Traefik configuration¶. GoLang Apps. The basic unit of composition in converge. We are UmboWe are Umbo Computer VisionComputer Vision We buildWe build autonomous videoautonomous video security systemsecurity system 3. Microservices based webapplication in golang using grpc. Спасибо за статью, как раз нужно было посмотреть на готовые примеры gRPC. gRPC and TLS. gRPC shines when it comes to sending a bunch of messages here and there. Tutorials: Programming IOS-XR with gRPC and Go. Golang (or simply Go), is a statically-typed and pre-compiled programming language invented by Google. js, C++, Python, Go,. I went through the same question of finding a good binary RPC protocol library that would support multiple languages (primarly Java and JavaScript in my case) On Codiva. There is some extra configuration required to connect to a gRPC service through Ambassador over an encrypted channel. Golang simplifies making concurrent/parallel applications and gRPC with Protobuf enables efficient. The service receives a Go program, vets , compiles, links, and runs the program inside a sandbox, then returns the output. Retrieving All Articles. To give you a brief background in case you haven’t heard about it (would be really difficult with gRPC’s belle of the ball status), it is a new, highly efficient and optimized Remote Procedure Call (RPC) framework. js, but requires that the server has the gRPC-Web compatibility layer (read on to understand more). To install this package, you need to install Go and setup your Go workspace on your computer. Golang, along with gRPC using Protobuf is an emerging stack for modern server programming. gRPC Golang Master Class is the best way to get a great overview of all the possibilities offered by gRPC with your favourite language > Learn the gRPC theory to understand how gRPC works > Compare gRPC and REST API paradigm > Write your gRPC service definition in. A fully-managed real-time messaging service. If the server was written in C++, I understand it would have returned Status::Ok. Remote procedure call (RPC) architecture is popular in building scalable distributed client/server model based applications. Aplikasi client akan berkomunikasi dengan kedua aplikasi server. Golang, gRPC and friends. In order to generate a solution to build the Bond Core C++ and Python with Visual Studio 2015 run the following commands from the root bond directory:. Golang (or simply Go), is a statically-typed and pre-compiled programming language invented by Google. This part of our series on deploying NGINX Plus as an API gateway - along with its other rich functionality - focuses on gatewaying gRPC services. Learn the gRPC theory to understand how gRPC works; Compare gRPC and the REST API paradigm; Write your gRPC service definitions in. protoc,以及 grpc 插件和其它插件:采用 ProtoBuf 作为 IDL 时,对. With the protobuf definition in hand, we'll generate Golang hooks. Except as noted, the content of this page is licensed under the Creative Commons Attribution 3. Dan yang satu adalah aplikasi client. Install Protocol Buffers. Early Access puts eBooks and videos into your hands whilst they're still being written, so you don't have to wait to take advantage of new tech and new ideas. It only takes three steps:. 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. The Go language implementation of gRPC. gRPC Jee-Arr-Pee-See 2. In the blog aforementioned I talked about how easy it was to get started with that in golang. We are going to use a gRPC-proxy to generate client front-end proxies for us. gRPC 是一个高性能、开源和通用的 RPC 框架,面向移动和 HTTP/2 设计。目前提供 C、Java 和 Go 语言版本,分别是:grpc, grpc-java, grpc-go. I know there are ways to run HTTP/2 on non-tls, but it's non-standard. HTTP server. Read our first blog on why we selected gRPC for our microservices architecture, and our second blog on how we package generated code from protobufs into libraries to easily update our services. Then, gRPC, an RPC-style framework that uses a unique, binary serialization called Protocol Buffers appeared on the scene. Simple API backed by PostgresQL, Golang and gRPC share. proto files. It's easy to get a simple service up and running with gRPC, but there are many items often overlooked that can lead to problems down the road. Download golang-google-grpc-devel packages for Fedora. gRPC is rapidly gaining adoption as the next generation of inter-service communication particularly in microservices architectures. Data between a client and server can even be streamed continuously. proto 文件进行编译处理。 官方文档 写的挺全面了。 类似其它 RPC 框架,gRPC 的库在服务端提供一个 gRPC Server,客户端的库是 gRPC Stub。典型的场景是客户端发送请求,同步或异步调用服务端的接口。. In our Go code we initially supported both HTTP/1. 一个message类型定义描述了一个请求或相应的消息格式,可以包含多种类型字段。例如定义一个搜索请求的消息格式,每个请求包含查询字符串、页码、每页数目。. On the server side I created a channel called done. v2-dev golang-websocket-dev transitional for golang-github-gorilla-websocket-dev. There is some extra configuration required to connect to a gRPC service through Ambassador over an encrypted channel. For more information see the gRPC Quick Start: Go guide. Copy sent to Paul Tagliamonte. v2-dev golang-yaml. Today we're looking at running inference / forward pass on a neural network model in Golang. proto files. go file is generated by compiling the. gRPC [Golang] Master Class: Build Modern APIs and Microservices is the best way to get a great overview of all the possibilities offered by gRPC with your favourite language Learn the gRPC theory to understand how gRPC works Compare gRPC and the REST API paradigm Write your gRPC service definitions in. Running a Keras / TensorFlow Model in Golang 02 April 2018 on MachineLearning, Golang, Deep Learning, TensorFlow, Keras. Acknowledgement sent to Lucas Nussbaum : New Bug report received and forwarded. Google App Engine でgRPCを使うためのgRPC Web #golang #gcpja. Golang, gRPC and friends. Golang simplifies making concurrent/parallel applications and gRPC with Protobuf enables efficient communication with a pleasing developer experience. js、Python、Ruby、Objective-C、PHP和C#等语言,grpc-java已经支持Android开发。 HTTP/2. Except as noted, the content of this page is licensed under the Creative Commons Attribution 3. js there is an official Node. We'll look at this example in more detail below. If you look up how to handle custom errors in gRPC/go-kit services you will probably find a few sketchy instructions but no system. Announcing Ratelimit Go/gRPC service designed to enable generic rate limiting. protoc,以及 grpc 插件和其它插件:采用 ProtoBuf 作为 IDL 时,对. I also cover configuration of mutual SSL for gRPC on Junos. to ensure maximum interoperability. See the docs! It’s pretty reasonable, though. io Java Online Compiler I have multiple systems. This is a short article on creating a self-signed root certificate which can be used to self-sign certificates for the purposes of treating our telemetry and instrumentation exploration with the security love it deserves. The most straightforward RPC system to use with protocol buffers is gRPC: a language- and platform-neutral open source RPC system developed at Google. This only happens if there is no error, that is, the server rpc function returns nil. */ /** TODO(roth). Server - send each incoming RPC to a gRPC-managed dynamically-sized thread-pool for processing. Learn the gRPC theory to understand how gRPC works; Compare gRPC and the REST API paradigm; Write your gRPC service definitions in. If you look up how to handle custom errors in gRPC/go-kit services you will probably find a few sketchy instructions but no system. Restrictive formats like "IP+port tuple" will annoy users who want to run your code as part of a larger framework or integration test, which may have its own ideas about network addresses. To give you a brief background in case you haven’t heard about it (would be really difficult with gRPC’s belle of the ball status), it is a new, highly efficient and optimized Remote Procedure Call (RPC) framework. GoLang Golang is the new benchmark in the performance of a distributed / concurrent app, you can think of it as C, but much easier to learn and does not need LibC. Writing maintainable Golang, a Go e-commerce guide, starting with gRPC & more This article is a beginner’s guide to understanding interfaces in Golang, and its. Dua diantaranya merupakan aplikasi server, rpc server. The main purpose for this tool is to invoke RPC methods on a gRPC server from the command-line. This page lists third party gRPC applications and afterwards provides development resources. Early Access puts eBooks and videos into your hands whilst they're still being written, so you don't have to wait to take advantage of new tech and new ideas. I also cover configuration of mutual SSL for gRPC on Junos. $ go run interfaces. The Go implementation of gRPC: A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. Let's start!. We are going to use a gRPC-proxy to generate client front-end proxies for us. gRPC leverages HTTP2 underneath and as such benefits from many of the above efficiencies of HTTP2. Introduction. The latest release of Protocol Buffers can be found on the release page https://github. This means our data is distributed among nodes in the cluster. It is leveraged by many top tech companies such as Google, Square, and Netflix and enables programmers to write. gRPC Jee-Arr-Pee-See 2. A frustrating omission since custom errors are useful and common in Go projects. After registration, exported methods of the object will be accessible remotely. Package grpc implements an RPC system called gRPC. WithInsecure()) Add certificates, otherwise the base level HTTP libraries won't kick in HTTP/2, and you'll be stuck opening new TCP connections for most new connections. HCL is a superset of JSON that looks (and acts) quite a bit nicer. Traefik configuration¶. Use the left and right arrow keys or click the left and right edges of the page to navigate between slides. Protobuf is a thing for serializing structured data that Google made for the impatient world (meaning it's fast and efficient). Dependency Server. From Monolith to Microservice: Building APIs with gRPC & golang Case study & tutorial on how to break up a legacy monolith codebase into microservices using gRPC + Protobuf + golang + the language of your choice!. gRPC is a technology to allow calling server functions from a client, possibly from a different system. Cool! And you want to use mutual TLS, too. 53981633974483 31. If you want to learn more, get the gRPC [Java] Master Class or the gRPC [Golang] Master Class course at a special price: Java - https://www. Copy sent to Paul Tagliamonte. gRPC responses use a similarly encoded body and use HTTP trailers to send the status code at the end of the response. Download files. Last weeks ago, I already post about clean architecture in golang. Install Protocol Buffers. What about file uploads? Is gRPC a good fit for file transfer? Check out how to send files with gRPC and see if that makes sense. gRPC Golang Master Class is the best way to get a great overview of all the possibilities offered by gRPC with your favourite language > Learn the gRPC theory to understand how gRPC works > Compare gRPC and REST API paradigm > Write your gRPC service definition in. protoc,以及 grpc 插件和其它插件:采用 ProtoBuf 作为 IDL 时,对. Adding SSL allows it to upgrade to HTTP/2, since HTTP/2 is TLS only. [Stephane Maarek] -- "gRPC is a new and modern framework for building scalable, modern, and fast APIs. "gRPC concept diagram, from grpc. ForceCodec returns a CallOption that will set the given Codec to be used for all request and response messages for a call. rpm Vendor-neutral APIs for distributed tracing and context propagation golang-github-grpc-ecosystem-opentracing-devel latest versions : 0. Disclaimer: This article is not about a core Go package or tool but gRPC. The Go Playground is a web service that runs on golang. I am sure gRPC is a very good project and it fits perfect to golang (on server side), that's the reason I started a project to realize what i miss, but it is in an early state and not yet public. gRPC由google开发,是一款语言中立、平台中立、开源的远程过程调用系统。 gRPC是什么. Traefik configuration¶. Discover open source packages, modules and frameworks you can use in your code. You might have heard of gRPC by now, a new RPC system that is quickly taking on JSON/HTTP as the recommended way to communicate between microservices. At Aspen Mesh we love gRPC. We are going to use a gRPC-proxy to generate client front-end proxies for us. This is the only API where gRPC C/C++ uses its own worker threads to support RPCs Asynchronous API Client or server threads can use a CompletionQueue to wait for events (read/write/response notifications, alarms). And finally, we can compile and run. This post is a continuation of that theme, which covers unit testing. This session will cover a variety of lessons learned while developing and maintaining internal services at Google. Kita akan buat satu buah folder projek besar, didalamnya terdapat 3 buah aplikasi. Since we're working with a Go gRPC backend, we'll use the importable package which makes this extremely simple. gRPC [Golang] Master Class: Build Modern APIs and Microservices is the best way to get a great overview of all the possibilities offered by gRPC with your favourite language. Install Protocol Buffers. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: