March 2025
Intermediate to advanced
260 pages
6h 51m
Portuguese (Portugal, Brazil)
Content preview from Engenharia de software para cientistas de dados
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Capítulo 11. APIs
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As APIs (Interfaces de Programação de Aplicações) são uma parte importante da engenharia de software moderna. Vais achar muito útil saber como obter dados de uma API e os princípios básicos do seu funcionamento. As APIs permitem a comunicação e a transferência de dados entre dois sistemas. Podem ser expostas na Internet pública ou nos sistemas internos de uma empresa. Escondem os detalhes do teu código por trás de uma forma padrão de aceder a um sistema, fornecendo uma camada útil de abstração. Muitos dos grandes produtos de software utilizam APIs para trocar dados internamente e são particularmente importantes no desenvolvimento Web.
Uma API permite-te aceder de forma programática a alguns dados ou executar alguma ação. Um dos primeiros locais onde podes encontrar uma API é quando tentas descarregar alguns dados de uma API pública. Se enviares um pedido com uma estrutura específica, receberás de volta o que esperas. As APIs são um exemplo de comunicação entre cliente e servidor. O servidor fica à espera que algo o contacte, e o cliente é quem faz o contacto. O cliente pede alguns dados ao servidor e o servidor partilha esses dados. As APIs da Web geralmente usam HTTP para fazer um pedido e, em seguida, retornam uma resposta como um arquivo JSON (JavaScript Object Notation) ou XML.
As APIs são extremamente úteis porque podem fornecer acesso ...
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