April 2025
Intermediate to advanced
450 pages
14h 9m
Portuguese (Portugal, Brazil)
Content preview from Desempenho do Java, 2ª Edição
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Capítulo 10. Servidores Java
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Este capítulo explora tópicos relacionados às tecnologias de servidor Java. Em sua essência, essas tecnologias tratam de como transmitir dados, geralmente por HTTP, entre clientes e servidores. Portanto, o foco principal deste capítulo está em tópicos comuns à tecnologia de servidor geral: como escalar servidores usando diferentes modelos de thread, respostas assíncronas, solicitações assíncronas e manipulação eficiente de dados JSON.
O escalonamento de servidores é principalmente sobre o uso eficaz de threads, e esse uso requer E/S sem bloqueio e orientada a eventos. Os servidores Java/Jakarta EE tradicionais, como o Apache Tomcat, o IBM WebSphere Application Server e o Oracle WebLogic Server, têm usado as APIs NIO do Java para fazer isso há algum tempo. As estruturas de servidor atuais, como Netty e Eclipse Vert.x, isolam a complexidade das APIs Java NIO para fornecer blocos de construção fáceis de usar para a construção de servidores de menor porte, e servidores como Spring WebFlux e Helidon são construídos nessas estruturas (ambos usam a estrutura Netty) para fornecer servidores Java escaláveis.
Estas novas estruturas oferecem modelos de programação baseados na programação reactiva. Na sua essência, a programação reactiva baseia-se no tratamento de fluxos de dados assíncronos utilizando um paradigma baseado em eventos. Embora ...
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