AWS Lambda响应错误

问题描述：

我正在运行aws lambda，它将从maria DB中获取数据，并将获取的行作为JSON对象返回. JSON数组中的项目总数为64K.

I am running aws lambda which will fetch data from maria DB and return the fetched rows as a JSON object. A total number of item in JSON array is 64K.

我收到此错误:

{ "error": "body size is too long" }

是否可以通过对lambda进行任何配置来发送所有64K行?

Is there a way I can send all 64K rows by making any configuration change to lambda?

答

您无法发送64K行(超出6MB正文有效负载大小

You cannot send the 64K rows (Which goes beyond 6MB body payload size limit) making configuration changes to Lambda. Few alternative options are.

查询数据并使用Lambda内的/tmp(最大512MB)目录中的所有行构建一个JSON文件，将其上传到S3并返回

Query the data and build a JSON file with all the rows in /tmp (Up to 512MB) directory inside Lambda, upload it to S3 and return a CloudFront Signed URL to access the data.
Split the dataset into multiple pages and do multiple queries.
Use a EC2 instance or ECS, instead of Lambda.

注意:根据查询数据的目的，其大小等.可以使用不同的机制来有效地使用其他AWS服务.

Note: Based on the purpose of queried data, its size & etc. different mechanisms can be used, efficiently using other AWS services.

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