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Practical gRPC

You're reading from Practical gRPC Build highly-connected systems with a framework that can run on any platform

Product type Paperback

Published in Nov 2019

Publisher

ISBN-13 9781839211744

Length 169 pages

Edition 1st Edition

Languages

Go

Tools

Git

Concepts

Web Programming

Authors (6):

Robert Ross

Carles Sistare

Joshua B. Humphries

Backstop Media LLC

David Konsumer

David Muto

+2 more

View More author details

Table of Contents (13) Chapters

Preface

1. Introduction FREE CHAPTER

2. What is gRPC?

3. What are Protocol Buffers?

4. gRPC basics

5. Star Friends

6. Streaming gRPC calls

7. Advanced gRPC

8. HTTP2 overview

9. Load balancing

10. Service evolution with gRPC

11. Extending gRPC services

12. Debugging gRPC

Flow control

HTTP/2 multiplexed frames unleash the potential to take full advantage of the network resources, but without a flow control you lose any sense of traffic congestion. Any peer sending data needs to know the ingestion capabilities of the receiver, otherwise the frames can be lost. If the receiver is busy doing other stuff, it needs to be able to communicate to the sender to slow down the cadence.

TCP protocol already considers flow control by communicating the receive window of each peer. This is the equivalent buffer size of each end point to hold incoming data. Each TCP ACK signal contains an updated receive window in function of the receiver availability.

The problem with TCP flow control, is that it doesn’t have enough Application Level granularity. Multiple streams in the same TCP connection prevent the optimizing of the receiving flow for each pair of stream-applications.

So in addition to TCP flow control, HTTP/2 uses the WINDOW_UPDATE frame type (type=0x8) to...

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Authors (5)

Joshua B. Humphries

Joshua B. Humphries

Joshua Humphries (jhump on GitHub) has been working with Protocol Buffers and building RPC systems and related facilities for over six years. He was first introduced to Protocol Buffers and Stubby (gRPCs forebearer) while working at Google. Afterward, he led a team that worked on protobuf-based RPC at Square, including smart clients in Java, Go, and Ruby that handled service discovery, load balancing, automatic retries, and automatic geographic failover. Joshua has been an advocate of gRPC since its initial release. He continues his work with Protocol Buffers and gRPC as part of an infrastructure team at FullStory, a customer experience management platform. He is a contributor to the Go open-source projects for gRPC and Protocol Buffers, the author of a Go library for Protocol Buffer reflection named protoreflect, and the author of gRPC-related projects open-sourced by FullStory, including grpcurl.

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Carles Sistare

Carles Sistare

Carles Sistare (carlessistare on GitHub, CarlesSistare on Twitter) is a challenge trotter eager for projects which offer the opportunity to learn about the most recent technologies. Keeping a close eye on the open-source community, three years ago, he became interested in gRPC, and quickly saw the benefits when it comes to microservice communication optimizations. Since then he has given several talks in France to evangelize gRPC. Carles is a co-founder of OGURY, an ad-tech company based in Paris, where he currently works as Head Architect.

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Robert Ross

Robert Ross

Robert Ross, also known as Bobby Tables (bobbytables on GitHub, bobbytables on Twitter), is a full-time staff software engineer at Namely, where he works on the architecture team. He writes with Go and Ruby primarily but can swing some JavaScript if needed. He operates FireHydrant on the side while listening to the Hamilton soundtrack an unhealthy amount.

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David Muto

David Muto

David Muto (pseudomuto on GitHub, pseudomuto on Twitter) has been writing software professionally for over 15 years and is a strong believer in continuous learning. Over the years he has written production quality code in over a dozen languages, taught application development at George Brown College (in Toronto) and worked on everything from web and mobile apps to low-level systems and RPC services. Hes a serial OSS contributor and the author of protoc-gen-doc, a tool for generating documentation from Protocol Buffers. He also recently published proto kit, a library for building your own protoc plugins in Go. David currently works at Shopify, leading a team that develops highly-available, low-latency, distributed services in the Data Science and Engineering department.

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David Konsumer

David Konsumer

David Konsumer (konsumer on GitHub, davidkonsumer on Twitter) has been working with open-source for about 20 years, with a strong focus on JavaScript. Before working with Node.js, he used PHP and Python to accomplish his daily programming tasks. He worked at NodeSource, to make N|Solid, Plex, Janrain, and Intel on the App Developer Program website. He also did lots of agency, freelance, and contract work, mostly for the web and cloud-based backend work. He taught programming classes at Free Geek, Portland. David is an advocate for accessible programming and the idea that everyone can learn to code, and it should be easy enough to get cool stuff done. He made grpcnode, node-protoc-plugin, and json2x, useful tools for getting things done with gRPC/protobuf in Node.js. David currently works as Lead of Engineering at Gummicube, an app-store optimization company based in San Jose, running the development department in Portland, OR.

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