September 2025
Intermediate to advanced
660 pages
13h 38m
Portuguese (Portugal, Brazil)
Content preview from Introdução ao Python, 3rd Edition
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Capítulo 22. Dados no espaço: Network+
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O tempo é a maneira que a natureza tem de evitar que tudo aconteça ao mesmo tempo. O espaço é o que impede que tudo aconteça comigo.
No Capítulo 21, você leu sobre simultaneidade: como fazer mais de uma coisa ao mesmo tempo. Agora tentaremos fazer as coisas em mais de um lugar:computação distribuída ou rede. Há muitos bons motivos para desafiar o tempo e o espaço:
- Desempenho
-
Seu objetivo é manter os componentes rápidos ocupados, não esperar pelos lentos.
- Robustez
-
Há segurança nos números, portanto, você deve duplicar as tarefas para contornar falhas de hardware e software.
- Simplicidade
-
A prática recomendada é dividir tarefas complexas em muitas pequenas tarefas que são mais fáceis de criar, entender e corrigir.
- Escalabilidade
-
Aumente seus servidores para lidar com a carga; reduza-os para economizar dinheiro.
Neste capítulo, vamos passar das primitivas de rede para conceitos de nível mais alto. Vamos começar com TCP/IP e sockets.
TCP/IP
A Internet baseia-se em regras sobre como fazer conexões, trocar dados, encerrar conexões, lidar com tempos limite e assim por diante. Essas regras são chamadas de protocolos e são organizadas em camadas. O objetivo das camadas é permitir a inovação e formas alternativas de fazer as coisas; você pode fazer o que quiser em uma camada, desde que siga as convenções ...
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