Rate limits.
This message determines the maximum rate that tasks can be dispatched by a queue, regardless of whether the dispatch is a first task attempt or a retry.
Note: The debugging command, RunTask, will run a task even if the queue has reached its RateLimits.
Output only. The max burst size. Max burst size limits how
fast tasks in queue are processed when many tasks are in the
queue and the rate is high. This field allows the queue to
have a high rate so processing starts shortly after a task is
enqueued, but still limits resource usage when many tasks are
enqueued in a short period of time. The token bucket
<https://wikipedia.org/wiki/Token_Bucket> algorithm is used
to control the rate of task dispatches. Each queue has a token
bucket that holds tokens, up to the maximum specified by
max_burst_size. Each time a task is dispatched, a token is
removed from the bucket. Tasks will be dispatched until the
queue's bucket runs out of tokens. The bucket will be
continuously refilled with new tokens based on [max_dispatche
s_per_second][google.cloud.tasks.v2beta3.RateLimits.max_dis
patches_per_second]. Cloud Tasks will pick the value of
max_burst_size based on the value of [max_dispatches_per
_second][google.cloud.tasks.v2beta3.RateLimits.max_dispatche
s_per_second]. For App Engine queues that were created or
updated using queue.yaml/xml, max_burst_size is equal
to bucket\_size <https://cloud.google.com/appengine/docs/stan
dard/python/config/queueref#bucket_size>. Since
max_burst_size is output only, if [UpdateQueue][google.clo
ud.tasks.v2beta3.CloudTasks.UpdateQueue] is called on a queue
created by queue.yaml/xml, max_burst_size will be
reset based on the value of [max_dispatches_per_second][goo
gle.cloud.tasks.v2beta3.RateLimits.max_dispatches_per_secon
d], regardless of whether [max_dispatches_per_second][googl
e.cloud.tasks.v2beta3.RateLimits.max_dispatches_per_second]
is updated.