Behavior differences

The Queues JavaScript API matches Cloudflare. Durability comes from scheduler.sqlite on this node.

Compatibility

Topic	Cloudflare	open-compute
JavaScript API	Queues JavaScript APIs	Same: send / sendBatch, contentType (json / text / bytes / v8), delaySeconds, metrics, consumer MessageBatch / ack / retry
Durability	Global replication	Local scheduler.sqlite on the node running ocd
Delivery	At-least-once	At-least-once
Global FIFO	Available	Not provided
Unknown native dispatch	—	May retain the lease; duplicate attempt numbers possible
Pull consumer	Available	Not provided
Binding	wrangler queues	Producer { type, id, permissions? }; consumer is the Worker queue handler

See Compatibility.