Queues and messaging

Queue and messaging types provide ordering, delivery, streaming, and publication semantics.

See Type construction and operations and Stream and messaging operations for ordering, lease/dead-letter behavior, stream group state, retention, delivery guarantees, and exact request fields.

Type	Construction	Principal operations
fifo_queue	CREATE	ENQUEUE, DEQUEUE, PEEK, LEN
lifo_stack	CREATE	PUSH, POP, PEEK, LEN
priority_queue	CREATE	ENQUEUE, DEQUEUE, LEN
blocking_queue	CREATE	ENQUEUE, DEQUEUE, LEN, CLOSE
delayed_queue	CREATE	ENQUEUE, POP_READY, LEN
reliable_queue	CREATE	ENQUEUE, CLAIM, ACK, NACK, STATS
stream	CREATE	ADD, RANGE, GROUP_CREATE, GROUP_READ, ACK, PENDING…
consumer_group	CREATE	SNAPSHOT
pubsub	CREATE	PUBLISH, STATS
persistent_topic	CREATE	PUBLISH, READ
event_log	CREATE	APPEND, READ, LEN