S3¶

The S3 key-value store is a root key-value store for accessing S3 buckets hosted by Amazon as well as other S3-compatible servers.

URL syntax¶

• s3://bucket/path

  Specifies an Amazon S3 bucket (with the endpoint bucket.s3.amazonaws.com).

• s3+https://host/path or s3+https://host/bucket/path

  Specifies an S3-compatible server at http://host or https://host.

  Note

  This URL syntax can ambiguously specify either:

  • a virtual hosted-style URL s3+https://host/path, where https://host refers to a single bucket, or

  • a path-style URL s3+https://host/bucket/path, where the bucket is specified as the first component of the path.

  Neuroglancer automatically detects which of these cases applies.

Capabilities¶

Authentication¶

Currently, only anonymous access is supported.

CORS¶

If the Neuroglancer client itself is not hosted in the same S3 bucket, the bucket must be configured with a CORS policy such as the following:

[
    {
        "AllowedHeaders": [
            "*"
        ],
        "AllowedOrigins": [
            "*"
        ],
        "ExposeHeaders": [
            "*"
        ],
        "MaxAgeSeconds": 3000
    }
]