View a markdown version of this page

S3FilesConfig - Amazon Lambda
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

S3FilesConfig

Setting controls how your function accesses data from an Amazon S3 file system.

Contents

DirectS3Read

Specifies if a function reads from the file system for the lowest latency, or through Amazon S3 Files feature "direct Amazon S3 bucket reads" for the highest throughput. Valid values:

  • AUTO (default) – Direct reads are active for functions you configure with 512 MB or more of memory.

  • ENABLED – Enforces all reads are directly from the Amazon S3 bucket, regardless of available memory (less than 512 MB).

  • DISABLED – Routes all reads through the file system, regardless of memory configuration.

To use direct reads, you must grant the execution role the s3:GetObject and s3:GetObjectVersion permissions. If a direct read fails, Lambda automatically falls back to reading through the file system.

Type: String

Valid Values: ENABLED | DISABLED | AUTO

Required: No

See Also

For more information about using this API in one of the language-specific Amazon SDKs, see the following: