c# - Creating Blob in Azure Blob Storage with the same name simultaneously -

i have task load images blob storage simultaneously. name of blob defined md5 of blob. can happen different threads try load same files different locations.

now need know how block other threads loading same file, if first trying upload such blob.

you can without leasing using optimistic concurrency. basicly set access condition says blob different etags of blobs name. if there indeed blob etag second upload fail.

var access = accesscondition.generateifnonematchcondition("*"); await blobref.uploadfromstreamasync(stream, access, null, null);