Intro to gRPC: A Modern Toolkit for Microservice Communication

[@g00dvibes47]

One of the best presentations I’ve seen. Love seeing professionals in the industry go off like this.

[@kidkool27]

Was really confused by RPC until I saw this. This is great!

[@youtindia]

Seriously. Every other presentation other than this starts talking about Transport layer, Serialization, L5, L6, L7 of the OSI model and all the stuff. Just tell me what it is and maybe then we can get into the inner details. This presentation nailed it.

[@mutley11]

It seems that a lot of talks about IPC protocols only really consider the fate of the thing that came just before it. It would be good to show how system-Y is less likely to die compared to numerous systems that come before; starting with the likes of ASN.1 (which started out simple enough, but died/marginalised due to design-by-commitee and resultant feature proliferation, and poor tool support). As an observer, I think looking at this of comparative analysis would give a good indication of when the system is suitably stable. At least, I'm glad that its an open specification which is largely driven by one large diverse body with largely technical interests at heart.

[@iamdexterpark]

I highly appreciate this talk. Thank you so much for the opportunity to learn!

[@CrateRuby]

great presentations

[@kkmingming]

He put a lot of efforts into this presentation!!

[@SunilSingh1994]

A great talk to get started with gRPC

[@Techtter]

gRPC is a game changer in microservices world, all the companies going to adapt it very soon. Its time to say good bye to REST-JSON. Instead go with gRPC-Protobuf. I made a complete gRPC Java Course, Check it out for FREE Complete Course on my channel. #techtter

[@tonyohagan]

You can generate client libs for REST APIs using swagger toolkits.

[@imkiransuvarna]

Great, I also wanted to know about the gRPC-gateway.

[@AdmiralBud]

Has the error handling improved since this talk?

[@speedplane]

Can grpc create nice looking HTML documentation for each of the client libraries that it generates?

[@natep3419]

Hi, I know this is an old talk but is there a chance the example code is available in a repository still?

[@redstoneprojectrules]

The bad and the ugly: - Load balancing: Can be mitigated by using a service mesh (eg. through ISTIO virtualservices) - Rich errors: perhaps just do one_of(message, rich_error)? Am I wrong?

[@AlecWantoch]

NATS (gnatsd) bus could solve the load balancing issues, and helps with connecting microservices/containers

[@loden5677]

any recommendation for sources / tutorials on integrating NATS in a microservice based system?

[@DKAS-g4h]

great talk! But what the hell is going on in the room? 20:06

[@renanrodriguessm1845]

Sounds like two dudes are beating each other to decide who will sit on the chosen seat.

[@cnikolov]

Its seems very easy to setup for internal services but nothing in particular for browsers, are there any javascript libraries we can use to implement for the web? what about the web?

[@BerkeSokhan]

The client lib creation and compiler belongs to protobuf not gRPC, and it was happening years before gRPC. Presenter convolutes Protocol Buffers with gRPC.

[@joonasfi]

No. Protobuf doesn't understand about timeouts or RPC endpoints. I guess you could say protobuf is how you define what the RPC call takes as an input and what it produces as output, but the service / RPC call itself / timeouts / client lib creation is definitely gRPC stuff.

[@franciscolopezsancho]

Very clear indeed. Thank you so much

[@maximyefremov9718]

Very entertaining and engaging presentation

[@cplusplussizeddick1430]

Can you someone give an estimate for how long it'll take to learn until you're able to build an API using gRPC? In hours.

[@lisasievers6999]

you can with Ruby though, yes? error responses?

[@vectorhacker-r2]

Yes and yes

[@rimbik1]

goes ovre my head

[@loden5677]

Loved the jokes. Btw what are they referring to when they mention "streaming"?

[@PaulSebastianM]

Browser JS -> WebASM and use any of the protoc generated stubs! Right?

[@AlecWantoch]

Paul-Sebastian Manole check gRPC-web

[@xufeisun1397]

This guy really knows his stuff! Anyone knows his name?

[@flamendless]

Inventor if ngrok is surprisingly young 🤔 i have this presumption that creators of such tech are ancient 😂

[@Baltasarmk]

Slides are impossible to read on mobile screen.

[@SusenMaharjan]

Maybe your phone has small screen mate

[@AbulHasanLakhani]

S9+ has pretty decent screen.. still difficult to read slide text. May be because half of the screen is taken by the presenter

[@hassanhashemi6478]

Great talk, Thanks..

[@alsteant]

Why not talk at least a little about GraphQL? 5:40

[@12a4tv]

CAn you share me slide?

[@ramprasadv5170]

very useful

[@alfonsoperezzzz]

while it's cool and all that. I hate when people try to introduce you a new technology/lib/api/whatever trashing the old stuff

[@sineltor]

The existence of the new thing is usually motivated by a desire to fix / avoid the problems of the old thing. Trashing the old thing explains the why - why gRPC when we already have REST? And it is a bid for resonance in the audience. "You find these parts of REST annoying??? Me too!!"

[@dravifo6762]

I can't make anything work. Visual Studio nuget doesn't work, and can't find protoc-gen-grpc. I just want to get SOMETHING - the most simple hello world working. And I don't want a small application that demonstrates every aspect of gRPC. The very most basic command line procedure to compile and use a service; and don't assume I know Anything because nothing I do know seems to be useful. I'm just going in circles with documentation that doesn't actually spell it out.

[@irrefl1672]

What is the difference in this kind of arquitecture than others.

[@khaled_osman]

What about graphql, with it you get the same benefits without the drawbacks of grpc in terms of load balancing, error messages/handling, browser support, documentation, etc..

[@michaelabbott7560]

I'm not sure how you've come to that conclusion?

[@khaled_osman]

@@michaelabbott7560 I've personally used GraphQL many times before

[@michaelabbott7560]

@@khaled_osman But that doesn't explain how you think you can get the same benefits with GraphQL without the drawbacks over GRPC?

[@khaled_osman]

@@michaelabbott7560 from my interpretation, this is why I'm asking, what are the benefits of grpc over graphql?

[@michaelabbott7560]

@@khaled_osman Ah ok sorry! Didn't realise you were asking. So lets talk at the architectural level to begin specifically at a networking level. HTTP2 vs HTTP1.1. You use HTTP1.1 currently, any time you start querying a graphql server, set up subscriptions mutations etc all that fun stuff. REST also follows this approach currently. So what does HTTP2 provide that HTTP1.1 doesn't? Well firstly, HTTP2 uses binary protocols to complete requests. What does this mean? It's faster to decode and encode the request, and it's more 'compact' over the network so it makes the network more efficient too. Allows for bi-directional streams. Allows for domain sharding. Those are 'some' of the differences between HTTP2 vs HTTP1.1. You'd be correct in saying those are differences at the Networking level and aren't a direct comparison between graphql and GRPC but GRPC does expose this functionality as GRPC uses HTTP2 as it's transport layer. So lets talk about individual differences. GRPC uses Protofiles as a way describing an API. So what's so good about this? REST can do a similar thing with YAML. Well firstly, Protofiles use a binary serialisation, which means the file size of a protofile structure will always be less that it's counter part of JSON or XML for example message Sample { string sample = 1; } vs { sample: "some value" } Now this is a silly comparison to be honest because the difference in byte size between the two would be tiny. But what if the response was bigger? Couple hundred lines? and that API is being hit thousands of times a day? Ok, now were going to notice the difference. Other benefits? So, another purpose of those proto files serve is in conjunction with protoc. Protoc can take your protofiles and turn them into a language client (if you've ever worked with an api large enough that's exposed to other customers they may require a REST client that exposes the functionality of the api in some kind of arbitrary abstraction of a curl request. Here's an example github.com/sendgrid/rest). Well now, with protoc and protobuffs you can generate those clients in almost any language and distribute them to a clients, customers etc eliminating the need to generate rest clients, AKA developer time. An example of such a command would be protoc --proto_path=src --go_out=build/gen --go_opt=paths=source_relative src/foo.proto src/bar/baz.proto protoc --proto_path=src --cpp_out=build/gen --go_opt=paths=source_relative src/foo.proto src/bar/baz.proto protoc --proto_path=src --java_out=build/gen --go_opt=paths=source_relative src/foo.proto src/bar/baz.proto 3 commands generating 3 clients in 3 different languages. Voila.

[@MusobarMedia]

very good presentation,,

[@tonyww]

this presenter makes me feel he enjoys bragging about his knowledge and understanding of the topic without "educating" the audience how to use the technology.

[@jkuang]

REST rules. Move on.

[@richardholguin3481]

The microphone thumping!!

[@jeffg4686]

Why no RUST client?

[@climatechangedoesntbargain9140]

whats rust?

[@ClearerThanMud]

Excellent talk -- thanks! Just one thought. At kzbin.info/www/bejne/iKC7hZKIoMxrgqMm30s he mentions the difficulty in modeling a "restart the machine" operation in REST; if you've been there, you might find this interesting: nicholassterling.wordpress.com/2014/02/16/rebootrestart-in-a-rest-api-using-put/

[@Techtter]

gRPC is a game changer in microservices world, all the companies going to adapt it very soon. Its time to say good bye to REST-JSON. Instead go with gRPC-Protobuf. I made a complete gRPC Java Course, Check it out for FREE Complete Course on my channel. #techtter

[@123SriNat]

I lost interest as the slides are not readable on my phone. But a good inteo though!

[@De4sher]

The python example at kzbin.info/www/bejne/iKC7hZKIoMxrgqMm58s can't really work. You can't use the keyword `from` as a parameter name.

[@twilio]

Correct, that should be `from_`.

[@angry-qa]

​@@twilio And print is as of python 2.

[@massimo6767]

Humour isn't meant to substitute valid arguments ;) Rest is Easy and rules the web, no reason to hype things that do not really solve the same kind of problems

[@wi8shad0w]

Zeromq ! .. anyone ???

[@xuelvming]

Tried Zeromq before, have to admit it's a wonderful tech. But way more complicated ,especially if you want to use some of its advanced ideas other than req and reply

[@learntocode5464]

Yes that's easy but cpu i7 utilization is 99% why?

[@danielliu5034]

Dry humour much?

[@otockian]

The number of times he said the word "like" and "right", omg....Otherwise great talk!

[@twilio]

Filler words and crutch phrases are difficult habits to break especially on stage! Thanks for watching.

[@evans8245]

funny