Avaliação de modelos de comunicação em aplicações distribuídas: um estudo de caso no contexto de segurança pública

Abstract

With the advancement of network technologies and the increasing demand for distributed systems, it is essential to understand the characteristics and performance of different communication models. This paper presents a comparative analysis of synchronous and asynchronous communication models in distributed applications, with an evaluation in a real-world solution in the context of public security. The experiments were divided into two scenarios: the first one with a significant amount of data, using exclusively REST/HTTP and gRPC protocols; and the second one with a smaller amount of data, encompassing both aforementioned protocols as well as AMQP. It was observed that gRPC demonstrated superiority in efficiency over HTTP in scenarios with high data loads due to its ability to handle extensive listings more effectively. In contrast, in scenarios with lower volume of information, HTTP and gRPC showed similar performances. However, AMQP stood out for its superior efficiency, although its implementation requires significant changes in the architecture, including the adoption of a Message Broker. The results indicate that there is no superior model in all aspects, but rather that the choice of the appropriate model depends on the specific needs of the application.