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Lambda  >  Structures  >  S3FilesConfig

S3FilesConfig

Structure Class

S3FilesConfig dataclass

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

Attributes

direct_s3_read class-attribute instance-attribute 
direct_s3_read: str | None = None

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.