The approximate number of times that Cloud Pub/Sub has attempted to deliver
the associated message to a subscriber.
More precisely, this is 1 + (number of NACKs) +
(number of ack_deadline exceeds) for this message.
A NACK is any call to ModifyAckDeadline with a 0 deadline. An ack_deadline
exceeds event is whenever a message is not acknowledged within
ack_deadline. Note that ack_deadline is initially
Subscription.ackDeadlineSeconds, but may get extended automatically by
the client library.
Upon the first delivery of a given message, delivery_attempt will have a
value of 1. The value is calculated at best effort and is approximate.
If a DeadLetterPolicy is not set on the subscription, this will be 0.
The approximate number of times that Cloud Pub/Sub has attempted to deliver
the associated message to a subscriber.
More precisely, this is 1 + (number of NACKs) +
(number of ack_deadline exceeds) for this message.
A NACK is any call to ModifyAckDeadline with a 0 deadline. An ack_deadline
exceeds event is whenever a message is not acknowledged within
ack_deadline. Note that ack_deadline is initially
Subscription.ackDeadlineSeconds, but may get extended automatically by
the client library.
Upon the first delivery of a given message, delivery_attempt will have a
value of 1. The value is calculated at best effort and is approximate.
If a DeadLetterPolicy is not set on the subscription, this will be 0.
The approximate number of times that Cloud Pub/Sub has attempted to deliver
the associated message to a subscriber.
More precisely, this is 1 + (number of NACKs) +
(number of ack_deadline exceeds) for this message.
A NACK is any call to ModifyAckDeadline with a 0 deadline. An ack_deadline
exceeds event is whenever a message is not acknowledged within
ack_deadline. Note that ack_deadline is initially
Subscription.ackDeadlineSeconds, but may get extended automatically by
the client library.
Upon the first delivery of a given message, delivery_attempt will have a
value of 1. The value is calculated at best effort and is approximate.
If a DeadLetterPolicy is not set on the subscription, this will be 0.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[],[]]