Globalcode – Open4education

Java Enterprise

De monolito para microserviços

- e algumas descobertas de performance

Renan Zenkner Roggia

SAP Cloud Platform Tax Service - Software Engineer

Globalcode – Open4education

O que vocês fariam se tivessem que

aumentar o throughput do seu web

service em 2400%?

Globalcode – Open4education

De 1.000 para 25.000

* Esses números são meramente ilustrativos

* Proporcionais

1.000 r/m 25.000 r/m

Globalcode – Open4education

1 25

Escalando o monolito

Globalcode – Open4education

Nosso arquitetura de monolito é eficaz?

Globalcode – Open4education

Um monolito

Roteamento:

1. Motor de calculo interno

Processamento alto

2. Motor de calculo externos

Alto uso de I/O

* Foto oficial do monólito

Globalcode – Open4education

1 25

Desperdiçando de recurso

Roteamento

Motor de

calculo

Roteamento

Motor de

calculo

Globalcode – Open4education

Duas metades de um monolito

Roteamento Motor de calculo

HTTP

RoteamentoRoteamento

Globalcode – Open4education

Separando o monolito.

Otimizamos o consumo de recursos,

tornamos os ciclos de entrega

independentes.

Globalcode – Open4education

Duas metades de um monolito

Roteamento Motor de calculo

HTTP

RoteamentoRoteamento

Globalcode – Open4education

Atualizando a stack de desenvolvimento.

Aumentamos de 1.000 r/m para 13.000

r/m

Globalcode – Open4education

Nossa aplicação é eficaz?

Globalcode – Open4education

Globalcode – Open4education

Síncrono e bloqueante

Globalcode – Open4education

Síncrono e bloqueante

Globalcode – Open4education

One thread per request model

Motor de calculo

HTTP

Thread

Thread

ThreadRequest

Request

Request

HTTP

HTTP

HTTP

HTTP

HTTP

Globalcode – Open4education

“Waiting within the servlet is an inefficient

operation as it is a blocking operation that

consumes a thread and other limited

resources.”

Java Servlet Specification 3.1

Globalcode – Open4education

Globalcode – Open4education

Globalcode – Open4education

Assíncrono e não bloqueante

Globalcode – Open4education

Source: https://www.infoq.com/articles/Servlet-and-Reactive-Stacks-Spring-Framework-5/

https://www.infoq.com/articles/Servlet-and-Reactive-Stacks-Spring-Framework-5/

Globalcode – Open4education

Alternativas ao Servlet API?

Globalcode – Open4education

Spring WebFlux

“For a non-blocking web stack to handle

concurrency with a small number of

threads and scale with fewer hardware

resources.”

Source: https://docs.spring.io/spring/docs/current/spring-framework-reference/web-reactive.html

https://docs.spring.io/spring/docs/current/spring-framework-reference/web-reactive.html

Globalcode – Open4education

Spring WebFlux

Motor de calculoSelector Worker Thread

HTTP

HTTP

HTTP

HTTP

HTTP

HTTP

WEBFLUX

Globalcode – Open4education

Globalcode – Open4education

Globalcode – Open4education

Event Loop

Globalcode – Open4education

Mudando pra Spring Webflux e o

paradigma para reactive programming.

Aumentamos de 13.000 r/m para

19.000 r/m

Globalcode – Open4education

Nossa arquitetura é eficaz.

Nossa aplicação é eficaz.

Globalcode – Open4education

A integração dos microserviços é eficaz?

Globalcode – Open4education

Roteamento

HTTP

Motor de calculo

HTTP

HTTP

HTTP

HTTP

HTTP

HTTP

WEBFLUX

Globalcode – Open4education

Roteamento

AMQP

AMQP

AMQP

AMQP

HTTP

HTTP

HTTP

WEBFLUX

Globalcode – Open4education

Adicionando um serviço de mensageria

para a comunicação dos microserviços.

Aumentamos de 19.000 r/m para

81.000 r/m

Globalcode – Open4education

Concluindo

13879

30370

19429

81537

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

HTTP AMQP

MVC vs Webflux && HTTP vs AMQP

MVC WebFlux

Globalcode – Open4education

Concluindo

Realmente precisamos de Spring

WebFlux?

Globalcode – Open4education

/RRoggia

renanzr@gmail.com

Códigos e baselines

de mvc e webflux