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gRPC vs REST: let the battle begin!

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Alex Borysov
Alex Borysov

The document summarizes a presentation given by Alex Borysov and Mykyta Protsenko comparing gRPC and REST. It provides an overview of gRPC, describing it as a high performance RPC framework. It then discusses some issues with REST including heterogeneous data formats and service discovery. Examples are given of implementing a sample aggregator service using both REST and gRPC to illustrate their differences.

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gRPC vs REST: let the battle begin! Devoxx, November 9, 2017 Alex Borysov, Software Engineer @ Google Mykyta Protsenko, Software Engineer @ Roku
Who are we? Mykyta Protsenko Software Engineer @ Roku • passionate about all things scalable • 18+ years in software engineering • Author of Henka REST vs gRPC Alex Borysov Software Engineer @ Google • large scale systems developer • 11+ years in software engineering • Active gRPC user REST vs gRPC @aiborisov @mykyta_p
@aiborisov @mykyta_p @aiborisov @mykyta_p
JSON over HTTP @aiborisov @mykyta_p
I am getting frustrated by the number of people calling any HTTP-based interface a REST API. Roy Fielding http://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven @aiborisov @mykyta_p
@aiborisov @mykyta_p
@aiborisov @mykyta_p
RESTful API GET /user/15 { “name”: “John Doe”, “email”:“john.doe@gmail.com”, ... } non-RESTful API GET /last_search?page=2 { “products”: [...] ... } @aiborisov @mykyta_p
What is gRPC? @aiborisov @mykyta_p
What is gRPC? gRPC stands for gRPC Remote Procedure Calls. A high performance, general purpose, feature-rich RPC framework. Part of Cloud Native Computing Foundation cncf.io HTTP/2 and mobile first. Open sourced version of Stubby RPC used in Google. @aiborisov @mykyta_p
RPC?! But... AMF? RMI? CORBA? @aiborisov @mykyta_p
gRPC is not RMI Maitainability Ease of use Performance Scalability L e s s o n s Years of using Stubby @aiborisov @mykyta_p
What is gRPC? Abstractions and best practices on how to design RPCs. Default implementation(s) from Google. Extension points to plug custom implementations and modifications. Supports 10+ programming languages. @aiborisov @mykyta_p
gRPC Interoperability Java Service Python Service GoLang Service C++ Service gRPC Service gRPC Stub gRPC Stub gRPC Stub gRPC Stub gRPC Service gRPC Service gRPC Service gRPC Stub @aiborisov @mykyta_p
Apples to Oranges? @aiborisov @mykyta_p
Microservices? @aiborisov @mykyta_p
Microservices? How to draw an owl? @aiborisov @mykyta_p
Microservices? How to draw an owl? How to build microservices? @aiborisov @mykyta_p
Microservices? How to draw an owl? How to build microservices? Draw some circles. @aiborisov @mykyta_p
Microservices? How to draw an owl? How to build microservices? Draw some circles. Take XYZ framework. @aiborisov @mykyta_p
Microservices? How to draw an owl? How to build microservices? Draw the REST of the owlDraw some circles. Take XYZ framework. @aiborisov @mykyta_p
Microservices? How to draw an owl? How to build microservices? Draw the REST of the owl Write your microservices! Draw some circles. Take XYZ framework. @aiborisov @mykyta_p
Microservices @aiborisov @mykyta_p
Microservices @aiborisov @mykyta_p
Microservices @aiborisov @mykyta_p
Microservices @aiborisov @mykyta_p
Remote Calls @aiborisov @mykyta_p
Call Flow @aiborisov @mykyta_p
Service Discovery? ? ? ? ? ? ? @aiborisov @mykyta_p
Multiple Instances #1 #N #2 . . . @aiborisov @mykyta_p
Multiple Instances #1 #N #2 ? ? ? . . . @aiborisov @mykyta_p
Call Flow @aiborisov @mykyta_p
Call Flow @aiborisov @mykyta_p
Call Flow @aiborisov @mykyta_p
Call Flow @aiborisov @mykyta_p
Call Flow @aiborisov @mykyta_p
Slow Services? @aiborisov @mykyta_p
Failure Scenarios @aiborisov @mykyta_p
A distributed system is one in which the failure of a computer you didn't even know existed can render your own computer unusable. Leslie Lamport, 1987 https://www.microsoft.com/en-us/research/wp-content/uploads/2016/12/Distribution.pdf @aiborisov @mykyta_p
Fault Tolerance @aiborisov @mykyta_p
Microservices?! But... Performance Hit? Service Discovery? Load Balancing? Fault Tolerance? Monitoring? Testing? @aiborisov @mykyta_p
Sample Problem Client @aiborisov @mykyta_p
Sample Problem: Aggregator Src #2 Src #1 Aggr ... Src #X Client @aiborisov @mykyta_p
Heterogeneous Data Format Src #2 Src #1 Aggr ... Src #X <XML>...<XML> {JSON} Binary 110011 [ Unified Format ] Client @aiborisov @mykyta_p
REST: It’s All About Resources @aiborisov @mykyta_p
REST: Call Hierarchy Controller Service Data Source A . . . Data Source N RestTemplate RestTemplate RestTemplate @aiborisov @mykyta_p
REST: Data Source JSON URL: http://bgdata.com/content/11 { "id": 11, "content": "Flink" } XML URL: http://pokemon.com/content/22 <ContentResponse> <id>22</id> <content>Pikachu</content> </ContentResponse> @aiborisov @mykyta_p
REST: Data Source ... ResponseEntity<Content> contentEntity = restTemplate.getForEntity( url + "{content_id}" Content.class, ImmutableMap.of("content_id", contentId)); ... @aiborisov @mykyta_p
REST: Service public class AggregatingService { public AggregatedContent fetch(int id) { ... return new AggregatedContent(...); } } public class AggregatedContent { private Integer id; private String type; private String content; private Integer nextId; @aiborisov @mykyta_p
REST: Service public class AggregatingService { public AggregatedContent fetch(int id) { ... return new AggregatedContent(...); } } public class AggregatedContent { private Integer id; private String type; private String content; private Integer nextId; @aiborisov @mykyta_p
REST: Service public class AggregatingService { public AggregatedContent fetch(int id) { ... return new AggregatedContent(...); } } public class AggregatedContent { private Integer id; // 115 private String type; // BigData private String content; // Flink private Integer nextId; // 116 @aiborisov @mykyta_p
REST: Service public class AggregatingService { public AggregatedContent fetch(int id) { ... return new AggregatedContent(...); } } public class AggregatedContent { private Integer id; // 115 private String type; // BigData private String content; // Flink private Integer nextId; // 116 @aiborisov @mykyta_p
REST: Controller @GetMapping( value = "/content/{id}", produces = "application/json") public AggregatedContent aggregated(@PathVariable("id") int id) { return aggregatingService.fetch(id); } @aiborisov @mykyta_p
REST: It’s All About Resources @GetMapping( value = "/content/{id}", produces = "application/json") public AggregatedContent aggregated(@PathVariable("id") int id) { return aggregatingService.fetch(id); } @aiborisov @mykyta_p
REST: It’s simple http://localhost:8080/content/115 { "id": 115, "content_type": "POKEMON", "content": "Pikachu", "next_uri": "/content/116" } @aiborisov @mykyta_p
REST: Service Discovery @aiborisov @mykyta_p
k8s/bigdata.yaml ... kind: Service metadata: name: rest-bigdata-content-service k8s/aggregator.yaml ... env: - name: datasource_a_url value: "http://rest-bigdata-content-service:8080" REST: Service Discovery @aiborisov @mykyta_p
k8s/bigdata.yaml ... kind: Service metadata: name: rest-bigdata-content-service k8s/aggregator.yaml ... env: - name: datasource_a_url value: "http://rest-bigdata-content-service:8080" REST: Service Discovery @aiborisov @mykyta_p
Controllers and POJOs, oh my! public class AggregatedContent { @JsonProperty("id") private Integer id; @JsonProperty("type") private String type; @JsonProperty("content") private String content; @JsonProperty("next_uri") private String nextUri; ... } { "id": 115, "content_type": "BigData", "content": "Flink", "next_uri": "/content/116" } @aiborisov @mykyta_p
gRPC: It’s All About APIs @aiborisov @mykyta_p
Sample Problem: Aggregator Src #2 Src #1 Aggr ... Src #X Client @aiborisov @mykyta_p
Service Definition (aggregator.proto) @aiborisov @mykyta_p
Service Definition (aggregator.proto) syntax = "proto3"; service AggregationService { rpc Get(AggregationRequest) returns (AggregationResponse); } @aiborisov @mykyta_p
Service Definition (aggregator.proto) syntax = "proto3"; service AggregationService { rpc Get(AggregationRequest) returns (AggregationResponse); } message AggregationRequest { int32 item_id = 1; } message AggregationResponse { int32 id = 1; ResponseType type = 2; string content = 3; int32 next_item_id = 4; } enum ResponseType { UNDEFINED = 0; POKEMON = 1; BIGDATA = 2; } @aiborisov @mykyta_p
Service Definition aggregator.proto @aiborisov @mykyta_p
Service Definition aggregator.proto gRPC Runtime @aiborisov @mykyta_p
Service Definition aggregator.proto AggregationServiceImplBase.java AggregationRequest.java AggregationResponse.java AggregationServiceStub.java AggregationServiceFutureStub.java AggregationServiceBlockingStub.java Service Implementation Request and response Client libraries gRPC Java runtime @aiborisov @mykyta_p
Implement gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void get(AggregationRequest request, StreamObserver<AggregationResponse> responseObserver) { } } @aiborisov @mykyta_p
Implement gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void get(AggregationRequest request, StreamObserver<AggregationResponse> responseObserver) { } }
Implement gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void get(AggregationRequest request, StreamObserver<AggregationResponse> responseObserver) { } } @aiborisov @mykyta_p
Thread #X Thread ... Thread #7 Thread #6 Thread #5 Thread #4 Blocking API (aka Thread-per-Request)? Thread #3 Thread #2 Thread #1 Thread pool of size X @aiborisov @mykyta_p
Thread #X Thread ... Thread #7 Thread #6 Thread #5 Thread #4 Blocking API (aka Thread-per-Request)? Thread #3 Thread #2 Thread #1 Thread pool of size X 1 @aiborisov @mykyta_p
Thread #X Thread ... Thread #7 Thread #6 Thread #5 Thread #4 Blocking API (aka Thread-per-Request)? Thread #3 Thread #2 Thread #1 Thread pool of size X 1 2 @aiborisov @mykyta_p
Thread #X Thread ... Thread #7 Thread #6 Thread #5 Thread #4 Blocking API (aka Thread-per-Request)? Thread #3 Thread #2 Thread #1 Thread pool of size X 1 2 3 @aiborisov @mykyta_p
Thread #X Thread ... Thread #7 Thread #6 Thread #5 Thread #4 Thread #3 Thread #2 Blocking API (aka Thread-per-Request)? Thread #1 Thread pool of size X 1 2 3 X . . . @aiborisov @mykyta_p
Thread #X Thread ... Thread #7 Thread #6 Thread #5 Thread #4 Thread #3 Thread #2 Blocking API (aka Thread-per-Request)? Thread #1 Thread pool of size X 1 2 3 X . . . X + 1 @aiborisov @mykyta_p
Thread #X Thread ... Thread #7 Thread #6 Thread #5 Thread #4 Thread #3 Thread #2 Blocking API (aka Thread-per-Request)? Thread #1 Thread pool of size X 1 2 3 X . . . X + 1 @aiborisov @mykyta_p
Implement gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void get(AggregationRequest request, StreamObserver<AggregationResponse> responseObserver) { } } @aiborisov @mykyta_p
Implement gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void get(AggregationRequest request, public interface StreamObserver<AggregationResponse> responseObserver){{ void onNext(AggregationResponse response); void onCompleted(); void onError(Throwable error); } } } @aiborisov @mykyta_p
Non-Blocking API 1 2 3 . . . X + Y X . . . @aiborisov @mykyta_p
Non-Blocking API (aka Hollywood Principle) 1 2 3 . . . X + Y X . . . WillCallYouLater! @aiborisov @mykyta_p
Non-Blocking API (aka Hollywood Principle) 1 2 3 . . . X + Y X . . . WillCallYouLater! onNext(1) @aiborisov @mykyta_p
Non-Blocking API (aka Hollywood Principle) 1 2 3 . . . X + Y X . . . WillCallYouLater! onNext(3) @aiborisov @mykyta_p
Non-Blocking API (aka Hollywood Principle) 1 2 3 . . . X + Y X . . . WillCallYouLater! onNext(X) @aiborisov @mykyta_p
Implement gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void get(AggregationRequest request, StreamObserver<AggregationResponse> responseObserver) { AggregationResponse response = AggregationResponse .newBuilder() .setId(request.getItemId()) .setContent("Pikachu") .setType(ResponseType.POKEMON) .build(); responseObserver.onNext(response); responseObserver.onCompleted(); } } @aiborisov @mykyta_p
Implement gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void get(AggregationRequest request, StreamObserver<AggregationResponse> responseObserver) { AggregationResponse response = AggregationResponse .newBuilder() .setId(request.getItemId()) .setContent("Pikachu") .setType(ResponseType.POKEMON) .build(); responseObserver.onNext(response); responseObserver.onCompleted(); } } @aiborisov @mykyta_p
Service Definition (aggregator.proto) syntax = "proto3"; service AggregationService { rpc Get(AggregationRequest) returns (AggregationResponse); } message AggregationRequest { int32 item_id = 1; } message AggregationResponse { int32 id = 1; ResponseType type = 2; string content = 3; int32 next_item_id = 4; } enum ResponseType { UNDEFINED = 0; POKEMON = 1; BIGDATA = 2; } @aiborisov @mykyta_p
Service Definition (aggregator.proto) syntax = "proto3"; service AggregationService { rpc Get(AggregationRequest) returns (AggregationResponse); } message AggregationRequest { } message AggregationResponse { int32 id = 1; ResponseType type = 2; string content = 3; } enum ResponseType { UNDEFINED = 0; POKEMON = 1; BIGDATA = 2; } @aiborisov @mykyta_p
Service Definition (aggregator.proto) syntax = "proto3"; service AggregationService { rpc Get(AggregationRequest) returns (AggregationResponse); } message AggregationRequest { } message AggregationResponse { int32 id = 1; ResponseType type = 2; string content = 3; } enum ResponseType { UNDEFINED = 0; POKEMON = 1; BIGDATA = 2; } @aiborisov @mykyta_p
Service Definition (aggregator.proto) syntax = "proto3"; service AggregationService { rpc Get(AggregationRequest) returns (stream AggregationResponse); } message AggregationRequest { } message AggregationResponse { int32 id = 1; ResponseType type = 2; string content = 3; } enum ResponseType { UNDEFINED = 0; POKEMON = 1; BIGDATA = 2; } @aiborisov @mykyta_p
Service Definition (aggregator.proto) syntax = "proto3"; service AggregationService { rpc Subscribe(AggregationRequest) returns (stream AggregationResponse); } message AggregationRequest { } message AggregationResponse { int32 id = 1; ResponseType type = 2; string content = 3; } enum ResponseType { UNDEFINED = 0; POKEMON = 1; BIGDATA = 2; } @aiborisov @mykyta_p
Service Definition (aggregator.proto) syntax = "proto3"; service AggregationService { rpc Subscribe(AggregationRequest) returns (stream AggregationResponse); } message AggregationRequest { } message AggregationResponse { int32 id = 1; ResponseType type = 2; string content = 3; } enum ResponseType { UNDEFINED = 0; POKEMON = 1; BIGDATA = 2; } @aiborisov @mykyta_p
Sample Problem: Aggregator Src #2 Src #1 Aggr ... Src #X Client aggregator.proto @aiborisov @mykyta_p
Sample Problem: Content Src #2 Src #1 Aggr ... Src #X Client aggregator.proto content.proto @aiborisov @mykyta_p
content.proto syntax = "proto3"; service ContentService { rpc Subscribe(ContentRequest) returns (stream ContentResponse); } message ContentRequest { } message ContentResponse { int32 id = 1; string content = 2; } @aiborisov @mykyta_p
Streaming gRPC Service public class AggregationService extends AggregationServiceImplBase { private final Collection<ContentServiceStub> contentStubs; public AggregationService(Collection<ContentServiceStub> contentStubs) { this.contentStubs = contentStubs; } ... @aiborisov @mykyta_p
Streaming gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void subscribe(AggregationRequest request,StreamObserver<AggregationResponse> responseObserver) { contentStubs.forEach(stub -> { stub.subscribe(ContentRequest.getDefaultInstance(), new StreamObserver<ContentResponse>() { @Override public void onNext(ContentResponse response) { ... } @Override public void onError(Throwable error) { responseObserver.onError(error); } @Override public void onCompleted() {} }); }); } @aiborisov @mykyta_p
Streaming gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void subscribe(AggregationRequest request,StreamObserver<AggregationResponse> responseObserver) { contentStubs.forEach(stub -> { stub.subscribe(ContentRequest.getDefaultInstance(), new StreamObserver<ContentResponse>() { @Override public void onNext(ContentResponse response) { ... } @Override public void onError(Throwable error) { responseObserver.onError(error); } @Override public void onCompleted() {} }); }); } @aiborisov @mykyta_p
Streaming gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void subscribe(AggregationRequest request,StreamObserver<AggregationResponse> responseObserver) { contentStubs.forEach(stub -> { stub.subscribe(ContentRequest.getDefaultInstance(), new StreamObserver<ContentResponse>() { @Override public void onNext(ContentResponse response) { ... } @Override public void onError(Throwable error) { responseObserver.onError(error); } @Override public void onCompleted() {} }); }); } @aiborisov @mykyta_p
Streaming gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void subscribe(AggregationRequest request,StreamObserver<AggregationResponse> responseObserver) { contentStubs.forEach(stub -> { stub.subscribe(ContentRequest.getDefaultInstance(), new StreamObserver<ContentResponse>() { @Override public void onNext(ContentResponse response) { ... } @Override public void onError(Throwable error) { responseObserver.onError(error); } @Override public void onCompleted() {} }); }); } @aiborisov @mykyta_p
Streaming gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void subscribe(AggregationRequest request,StreamObserver<AggregationResponse> responseObserver) { contentStubs.forEach(stub -> { stub.subscribe(ContentRequest.getDefaultInstance(), new StreamObserver<ContentResponse>() { @Override public void onNext(ContentResponse response) { ResponseType type = typeForStub(stub); int aggregationId = aggregationId(response.getId(), type); AggregationResponse aggrResponse = AggregationResponse.newBuilder() .setContent(response.getContent()).setId(aggregationId). .setType(type).build(); responseObserver.onNext(aggrResponse); } }); }); } @aiborisov @mykyta_p
Streaming gRPC Service public class AggregationService extends AggregationServiceImplBase { @Override public void subscribe(AggregationRequest request,StreamObserver<AggregationResponse> responseObserver) { contentStubs.forEach(stub -> { stub.subscribe(ContentRequest.getDefaultInstance(), new StreamObserver<ContentResponse>() { @Override public void onNext(ContentResponse response) { ResponseType type = typeForStub(stub); int aggregationId = aggregationId(response.getId(), type); AggregationResponse aggrResponse = AggregationResponse.newBuilder() .setContent(response.getContent()).setId(aggregationId). .setType(type).build(); responseObserver.onNext(aggrResponse); } }); }); } @aiborisov @mykyta_p
Streaming gRPC Service Src #2 Src #1 Aggr ... Src #X Client @aiborisov @mykyta_p
Streaming gRPC Service Src #2 Src #1 Aggr ... Src #X Client Subscribe() @aiborisov @mykyta_p
Streaming gRPC Service Src #2 Src #1 Aggr ... Src #X Client Subscribe() Subscribe() Subscribe() Subscribe() @aiborisov @mykyta_p
Streaming gRPC Service Src #2 Src #1 Aggr ... Src #X Client onNext() @aiborisov @mykyta_p
Streaming gRPC Service Src #2 Src #1 Aggr ... Src #X Client onNext() onNext() @aiborisov @mykyta_p
Streaming gRPC Service Src #2 Src #1 Aggr ... Src #X Client onNext() @aiborisov @mykyta_p
Streaming gRPC Service Src #2 Src #1 Aggr ... Src #X Client onNext() onNext() @aiborisov @mykyta_p
Start gRPC Server ContentServiceStub pokemonClient = ... ContentServiceStub bigDataClient = ... Server grpcServer = NettyServerBuilder.forPort(8080) .addService(new AggregationService(asList(pokemonClient, bigDataClient))) .build().start(); @aiborisov @mykyta_p
Start gRPC Server ContentServiceStub pokemonClient = ... ContentServiceStub bigDataClient = ... Server grpcServer = NettyServerBuilder.forPort(8080) .addService(new AggregationService(asList(pokemonClient, bigDataClient))) .build().start(); @aiborisov @mykyta_p
Create gRPC Client String host = System.getenv("pokemon_host"); int post = Integer.valueOf(System.getenv("pokemon_port")); ManagedChannel pokemonChannel = NettyChannelBuilder.forAddress(host, port).build(); @aiborisov @mykyta_p
Create gRPC Client String host = System.getenv("pokemon_host"); int post = Integer.valueOf(System.getenv("pokemon_port")); ManagedChannel pokemonChannel = NettyChannelBuilder.forAddress(host, port).build(); ContentServiceStub pokemonClient = ContentServiceGrpc.newStub(pokemonChannel); @aiborisov @mykyta_p
Create gRPC Client String host = System.getenv("pokemon_host"); int port = Integer.valueOf(System.getenv("pokemon_port")); ManagedChannel pokemonChannel = NettyChannelBuilder.forAddress(host, port).build(); ContentServiceStub pokemonClient = ContentServiceGrpc.newStub(pokemonChannel); ContentServiceBlockingStub pokemonBlockingClient = ContentServiceGrpc.newBlockingStub(pokemonChannel); @aiborisov @mykyta_p
Create gRPC Client String host = System.getenv("pokemon_host"); int port = Integer.valueOf(System.getenv("pokemon_port")); ManagedChannel pokemonChannel = NettyChannelBuilder.forAddress(host, port).build(); ContentServiceStub pokemonClient = ContentServiceGrpc.newStub(pokemonChannel); ContentServiceBlockingStub pokemonBlockingClient = ContentServiceGrpc.newBlockingStub(pokemonChannel); ContentServiceFutureStub pokemonFutureClient = ContentServiceGrpc.newFutureStub(pokemonChannel); @aiborisov @mykyta_p
Service Discovery & Load Balancing String host = System.getenv("pokemon_host"); int post = Integer.valueOf(System.getenv("pokemon_port")); ManagedChannel pokemonChannel = NettyChannelBuilder.forAddress(host, port).build(); @aiborisov @mykyta_p
Service Discovery & Load Balancing ManagedChannel pokemonChannel = NettyChannelBuilder.forAddress(host, port).build(); @aiborisov @mykyta_p
Service Discovery & Load Balancing ManagedChannel pokemonChannel = NettyChannelBuilder.forTarget("pokemon") .build(); @aiborisov @mykyta_p
Service Discovery & Load Balancing ManagedChannel pokemonChannel = NettyChannelBuilder.forTarget("pokemon") .nameResolverFactory(new DnsNameResolverProvider()) .loadBalancerFactory(RoundRobinLoadBalancerFactory.getInstance()) .build(); @aiborisov @mykyta_p
Service Discovery & Load Balancing ManagedChannel pokemonChannel = NettyChannelBuilder.forTarget("pokemon") .nameResolverFactory(new MyCustomNameResolverProviderFactory()) .loadBalancerFactory(new MyMoonPhaseLoadBalancerFactory()) .build(); @aiborisov @mykyta_p
Netty ManagedChannel pokemonChannel = NettyChannelBuilder.forTarget("pokemon") .nameResolverFactory(new MyCustomNameResolverProvider()) .loadBalancerFactory(new MyMoonPhaseLoadBalancerFactory()) .build(); @aiborisov @mykyta_p
Netty + HTTP/2 + Protobuf @aiborisov @mykyta_p
Netty + HTTP/2 + Protobuf = Performance http://www.grpc.io/docs/guides/benchmarking.html @aiborisov @mykyta_p 8 core VMs, streaming throughput
Netty + HTTP/2 + Protobuf = Performance http://www.grpc.io/docs/guides/benchmarking.html @aiborisov @mykyta_p 32 core VMs, streaming throughput
Client Latency ... 900 ms! @aiborisov @mykyta_p
Caching CDN 9 ms ... @aiborisov @mykyta_p
pay 24/7 Classic Cloud VM VM LB ... VM pay as you go @aiborisov @mykyta_p
Serverless pay as you go Func Funcinput ... Func input ... input @aiborisov @mykyta_p
All about resources IDL optional Synchronous by default Unary Perfect fit for serverless All about APIs IDL centric Asynchronous by nature Streaming or Unary Performance first REST gRPC @aiborisov @mykyta_p
Sample Problem Src #2 Src #1 ... Src #X Client Aggr @aiborisov @mykyta_p
Sample Problem: Voting Src #2 Src #1 ... Src #X Client Voting Aggr @aiborisov @mykyta_p
Sample Problem: Voting Src #2 Src #1 ... Src #X Client Voting Aggr @aiborisov @mykyta_p
Sample Problem: Voting Src #2 Src #1 ... Src #X Client Voting Aggr @aiborisov @mykyta_p
Sample Problem: Voting & Leaderboard Src #2 Src #1 ... Src #X Client Voting Aggr L-board @aiborisov @mykyta_p
Sample Problem: Voting & Leaderboard Src #2 Src #1 ... Src #X Client Voting Aggr L-board @aiborisov @mykyta_p
Sample Problem: Voting & Leaderboard Src #2 Src #1 ... Src #X Gateway Voting Aggr L-board @aiborisov @mykyta_p
Sample Problem Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Failing Leaderboard Src #2 Src #1 ... Src #X Gateway Voting Aggr @aiborisov @mykyta_p
Cascading Failure Src #2 Src #1 ... Src #X Gateway Voting Aggr @aiborisov @mykyta_p
Cascading Failure Src #2 Src #1 ... Src #X Gateway Voting Aggr @aiborisov @mykyta_p
Cascading Failure Src #2 Src #1 ... Src #X Gateway Voting Aggr @aiborisov @mykyta_p
Circuit Breaker Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Circuit Breaker Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Circuit Breaker Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Circuit Breaker Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Circuit Breaker Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Circuit Breaker Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Slow Services Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Timeouts? Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr 200 ms 2 sec @aiborisov @mykyta_p
Large Timeouts Gateway Voting L-Board 1,000 ms timeout 1,000 ms timeout 200 ms client timeout @aiborisov @mykyta_p
Large Timeouts Gateway Voting L-Board 1,000 ms timeout 1,000 ms timeout 200 ms client timeout 50 ms @aiborisov @mykyta_p
Large Timeouts Gateway Voting L-Board 1,000 ms timeout 1,000 ms timeout 200 ms client timeout 50 ms 400 ms @aiborisov @mykyta_p
Large Timeouts Gateway Voting L-Board 1,000 ms timeout 1,000 ms timeout 200 ms client timeout 50 ms 400 ms @aiborisov @mykyta_p
Large Timeouts Gateway Voting L-Board 1,000 ms timeout 1,000 ms timeout 200 ms client timeout 50 ms 400 ms 300 ms @aiborisov @mykyta_p
Short Timeouts Gateway Voting L-Board 100 ms timeout 100 ms timeout @aiborisov @mykyta_p
Short Timeouts Gateway Voting L-Board 100 ms timeout 100 ms timeout 2,000 ms client timeout @aiborisov @mykyta_p
Short Timeouts Gateway Voting L-Board 100 ms timeout 100 ms timeout 2,000 ms client timeout 50 ms @aiborisov @mykyta_p
Short Timeouts Gateway Voting L-Board 100 ms timeout 100 ms timeout 2,000 ms client timeout 50 ms 400 ms @aiborisov @mykyta_p
Short Timeouts Gateway Voting L-Board 100 ms timeout 100 ms timeout 2,000 ms client timeout 50 ms 400 ms @aiborisov @mykyta_p
Short Timeouts Gateway Voting L-Board 100 ms timeout 100 ms timeout 2,000 ms client timeout 50 ms 400 ms @aiborisov @mykyta_p
gRPC Deadline Propagation Gateway Voting L-Board 200 ms client timeout @aiborisov @mykyta_p
gRPC Deadline Propagation Gateway Voting L-Board 200 ms client timeout 50 ms @aiborisov @mykyta_p
gRPC Deadline Propagation Gateway Voting L-Board 200 - 50 ms timeout 200 ms client timeout 50 ms @aiborisov @mykyta_p
gRPC Deadline Propagation Gateway Voting L-Board 200 - 50 ms timeout 200 ms client timeout 50 ms 400 ms @aiborisov @mykyta_p
gRPC Deadline Propagation Gateway Voting L-Board 200 - 50 - 400 ms timeout 200 - 50 ms timeout 200 ms client timeout 50 ms 400 ms @aiborisov @mykyta_p
gRPC Deadline Propagation (Short) Gateway Voting L-Board 200 - 50 - 400 ms timeout 200 - 50 ms timeout 200 ms client timeout 50 ms 400 ms @aiborisov @mykyta_p
gRPC Deadline Propagation (Large) Gateway Voting L-Board 2,000 - 50 - 400 ms timeout 2,000 - 50 ms timeout 2,000 ms client timeout 50 ms 400 ms 300 ms @aiborisov @mykyta_p
Investigation Src #2 Src #1 ... Src #X Gateway VotingL-board Aggr @aiborisov @mykyta_p
Gateway VotingL-board Aggr Investigation Src #2 Src #1 ... Src #X @aiborisov @mykyta_p
VotingL-board Aggr Investigation Src #2 Src #1 ... Src #X Gateway @aiborisov @mykyta_p
L-board Aggr Investigation Src #2 Src #1 ... Src #X Gateway Voting @aiborisov @mykyta_p
L-board Aggr Investigation Src #2 Src #1 ... Src #X Gateway Voting @aiborisov @mykyta_p
Aggr L-board Investigation Src #2 Src #1 ... Src #X Gateway Voting @aiborisov @mykyta_p
Aggr L-board Investigation Src #2 Src #1 ... Src #X Gateway Voting @aiborisov @mykyta_p
Zipkin: Traces and Latency @aiborisov @mykyta_p
Zipkin and gRPC https://github.com/openzipkin/brave/tree/master/instrumentation/grpc URLConnectionSender sender = ... GrpcTracing grpcTracing = GrpcTracing.create(Tracing.newBuilder() .sampler(ALWAYS_SAMPLE).spanReporter(AsyncReporter.create(sender)).build()); @aiborisov @mykyta_p
Zipkin and gRPC https://github.com/openzipkin/brave/tree/master/instrumentation/grpc URLConnectionSender sender = ... GrpcTracing grpcTracing = GrpcTracing.create(Tracing.newBuilder() .sampler(ALWAYS_SAMPLE).spanReporter(AsyncReporter.create(sender)).build()); ManagedChannel pokemonChannel = NettyChannelBuilder.forAddress(pokemonHost, pokemonPort) .intercept(grpcTracing.newClientInterceptor()) .build(); Server grpcServer = NettyServerBuilder.forPort(8080) .addService(new AggregationService(asList(pokemonClient, bigDataClient))) .intercept(grpcTracing.newServerInterceptor()) .build().start(); @aiborisov @mykyta_p
Zipkin and gRPC https://github.com/openzipkin/brave/tree/master/instrumentation/grpc URLConnectionSender sender = ... GrpcTracing grpcTracing = GrpcTracing.create(Tracing.newBuilder() .sampler(ALWAYS_SAMPLE).spanReporter(AsyncReporter.create(sender)).build()); ManagedChannel pokemonChannel = NettyChannelBuilder.forAddress(pokemonHost, pokemonPort) .intercept(grpcTracing.newClientInterceptor()) .build(); Server grpcServer = NettyServerBuilder.forPort(8080) .addService(new AggregationService(asList(pokemonClient, bigDataClient))) .intercept(grpcTracing.newServerInterceptor()) .build().start(); @aiborisov @mykyta_p
Zipkin and REST build.gradle: dependencies { compile 'org.springframework.cloud:spring-cloud-sleuth-zipkin' compile 'org.springframework.cloud:spring-cloud-starter-sleuth' ... application.properties: spring.zipkin.baseUrl=http://zipkin:9411/ # sample 100% spring.sleuth.sampler.percentage=1.0 ... @aiborisov @mykyta_p
Zipkin : REST and gRPC @aiborisov @mykyta_p
http://GrpcVsRest.com @aiborisov @mykyta_p
Explore More? Demo: https://github.com/grpcvsrest @aiborisov @mykyta_p
Explore More? Demo: https://github.com/grpcvsrest http://grpc.io https://github.com/grpc http://www.grpc.io/docs/quickstart/java.html gRPC Google group: grpc-io@googlegroups.com REST: http://google.com/search?q=rest @aiborisov @mykyta_p
Demo UI is written by Yevgen Golubenko Software Engineer @ Anomali • Twitter: @HalloGene_ • github.com/HalloGene • linkedin.com/in/yevgen-golubenko @aiborisov @mykyta_p
REST gRPC @aiborisov @mykyta_p
All about resources Synchronous and unary Simplicity first External fault-tolerance Production ready All about APIs Async and streaming Performance first Built-in fault-tolerance Production ready REST gRPC @aiborisov @mykyta_p
All about resources Synchronous and unary Simplicity first External fault-tolerance Production ready All about APIs Async and streaming Performance first Built-in fault-tolerance Production ready REST gRPC Be pragmatic, start with your problem! @aiborisov @mykyta_p
Questions? @aiborisov @mykyta_p

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gRPC vs REST: let the battle begin!