Struct google_api_proto::google::cloud::tasks::v2beta2::RateLimits

pub struct RateLimits {
    pub max_tasks_dispatched_per_second: f64,
    pub max_burst_size: i32,
    pub max_concurrent_tasks: i32,
}

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][google.cloud.tasks.v2beta2.CloudTasks.RunTask], will run a task even if the queue has reached its [RateLimits][google.cloud.tasks.v2beta2.RateLimits].

Fields

max_tasks_dispatched_per_second: f64

The maximum rate at which tasks are dispatched from this queue.

If unspecified when the queue is created, Cloud Tasks will pick the default.

• For [App Engine queues][google.cloud.tasks.v2beta2.AppEngineHttpTarget], the maximum allowed value is 500.
• This field is output only for [pull queues][google.cloud.tasks.v2beta2.PullTarget]. In addition to the max_tasks_dispatched_per_second limit, a maximum of 10 QPS of [LeaseTasks][google.cloud.tasks.v2beta2.CloudTasks.LeaseTasks] requests are allowed per pull queue.

This field has the same meaning as rate in queue.yaml/xml.

max_burst_size: i32

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 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_dispatches_per_second][RateLimits.max_dispatches_per_second].

The default value of max_burst_size is picked by Cloud Tasks based on the value of [max_dispatches_per_second][RateLimits.max_dispatches_per_second].

The maximum value of max_burst_size is 500.

For App Engine queues that were created or updated using queue.yaml/xml, max_burst_size is equal to bucket_size. If [UpdateQueue][google.cloud.tasks.v2beta2.CloudTasks.UpdateQueue] is called on a queue without explicitly setting a value for max_burst_size, max_burst_size value will get updated if [UpdateQueue][google.cloud.tasks.v2beta2.CloudTasks.UpdateQueue] is updating [max_dispatches_per_second][RateLimits.max_dispatches_per_second].

max_concurrent_tasks: i32

The maximum number of concurrent tasks that Cloud Tasks allows to be dispatched for this queue. After this threshold has been reached, Cloud Tasks stops dispatching tasks until the number of concurrent requests decreases.

If unspecified when the queue is created, Cloud Tasks will pick the default.

The maximum allowed value is 5,000.

This field is output only for [pull queues][google.cloud.tasks.v2beta2.PullTarget] and always -1, which indicates no limit. No other queue types can have max_concurrent_tasks set to -1.

This field has the same meaning as max_concurrent_requests in queue.yaml/xml.

Trait Implementations

impl Clone for RateLimits

fn clone(&self) -> RateLimits

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RateLimits

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RateLimits

fn default() -> Self

Returns the “default value” for a type.

impl Message for RateLimits

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for RateLimits

fn eq(&self, other: &RateLimits) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for RateLimits