Comparação de diferentes protocolos de comunicação em uma arquitetura de microsserviços

Abstract

Communication protocol is a means by which one computer application communicates with another. Each protocol specifies a set of rules and standards that assist interaction between applications. In a microservices architecture, each service has a limited responsibility within a larger context, which together solves a problem. Communication between these services is a fundamental element that allows the sharing of information within a platform that may contain several applications. This work compared the HTTP, AMQP, ReSP and RPC protocols, with the aim of evaluating their performance in different scenarios that may exist when developing an application. With this, it was possible to identify limitations in each of them in relation to: I) the technology used to implement the protocol, II) the execution load and III) the behavior in different scenarios. The tests aimed to collect metrics on the number of requests and response time, within scenarios with different numbers of users. Through these it was possible to observe the limitation of the AMQP and ReSP protocols given the need for an intermediate agent. As a result, the HTTP protocol proved to be superior, followed by RPC, AMQP and ReSP, respectively.