[ec109685]

Delimiter isn’t used for writes, only list operations.

S3 simply looks at the common string prefixes in your object names and uses that to internally shard objects, so you can achieve a multiple of those request limits.

aaa122348

aaa484585

bbb484858

bbb474827

Would have same performance as:

aaa/122348

aaa/484585

bbb/484858

bbb/474827