September 2024
Intermediate to advanced
278 pages
7h 40m
Spanish
Content preview from Programar AWS Lambda
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Capítulo 5. Construir aplicaciones sin servidor
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Así que hasta ahora hemos hablado mucho de las funciones Lambda: cómo programarlas, cómo empaquetarlas y desplegarlas, cómo procesar la entrada y la salida, etc. Sin embargo, un aspecto importante de Lambda, que no hemos tratado mucho hasta ahora, es que las funciones Lambda rara vez se invocan directamente desde el código que escribimos en un sistema diferente. En su lugar, para la gran mayoría de usos de Lambda, configuramos una fuente de eventos, o disparador, que es otro servicio de AWS, y dejamos que AWS invoque nuestra función Lambda por nosotros.
Vimos un par de ejemplos de esto en "¿Qué aspecto tiene una aplicación lambda?":
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Para implementar una API HTTP, configuramos AWS API Gateway como fuente de eventos.
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Para implementar el procesamiento de archivos, configuramos S3 como fuente de eventos.
Hay muchos servicios diferentes de AWS que se integran directamente con Lambda, y aún más que se integran indirectamente. Esto significa que podemos crear aplicaciones sin servidor, utilizando Lambda como plataforma informática, que pueden realizar una amplia gama de tareas.
En este capítulo, veremos cómo vincular fuentes de eventos a Lambda y, a continuación, exploraremos cómo crear tipos específicos de aplicaciones con esta técnica. Por el camino, aprenderás más sobre cómo diseñar, crear, empaquetar e implementar ...
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