Two cairn-trail map builders must not overwrite the same GeoJSON blob at the same time. Which Blob Storage SDK concurrency tool should they use for an exclusive write?
Select an answer to reveal the explanation.
Short Explanation
A blob lease is the “occupied” sign on the editing desk: one writer holds it, others wait. Cosmos ETags guard Cosmos items, not blob bytes. Archive tier and VM disk leases solve different problems.
Full Explanation
Blob leases provide exclusive write access for a duration; clients acquire, renew, and release leases around critical updates. Cosmos optimistic concurrency applies to Cosmos items. Access tiers and VM disk leases are unrelated mechanisms for coordinating two app writers on one blob.