September 2024
Intermediate to advanced
738 pages
23h 26m
Spanish
book
Python en una cáscara de nuez, 4ª edición
by Alex Martelli, Anna Martelli Ravenscroft, Steve Holden, Paul McGuire
Content preview from Python en una cáscara de nuez, 4ª edición
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Capítulo 20. Servir HTTP
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Cuando un navegador (o cualquier otro cliente web) solicita una página a un servidor, éste puede devolver contenido estático o dinámico. Servir contenido dinámico implica que los programas web del servidor generan y entregan contenido sobre la marcha, a menudo basándose en información almacenada en una base de datos.
En la historia temprana de la web, la norma para la programación del lado del servidor era la Interfaz de Pasarela Común (CGI), que requería que el servidor ejecutara un programa independiente cada vez que un cliente solicitaba contenido dinámico. El tiempo de inicio del proceso, la inicialización del intérprete, la conexión a las bases de datos y la inicialización de los scripts suponen una sobrecarga considerable; la CGI no era escalable.
Hoy en día, los servidores web admiten muchas formas específicas del servidor para reducir la sobrecarga, sirviendo contenidos dinámicos desde procesos que pueden servir para varios hits en lugar de iniciar un nuevo proceso por hit. Por lo tanto, no cubrimos el CGI en este libro. Para mantener los programas CGI existentes, o mejor aún, portarlos a enfoques más modernos, consulta la documentación en línea (especialmente PEP 594 para recomendaciones) y echa un vistazo a los módulos de la biblioteca estándar cgi (obsoleto a partir de 3.11) y http.cookies.1
HTTP se ha vuelto aún más fundamental ...
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