Enum googapis::google::spanner::v1::request_options::Priority [−][src]
#[repr(i32)]
pub enum Priority {
Unspecified,
Low,
Medium,
High,
}
Expand description
The relative priority for requests. Note that priority is not applicable for [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
The priority acts as a hint to the Cloud Spanner scheduler and does not guarantee priority or order of execution. For example:
- Some parts of a write operation always execute at
PRIORITY_HIGH
, regardless of the specified priority. This may cause you to see an increase in high priority workload even when executing a low priority request. This can also potentially cause a priority inversion where a lower priority request will be fulfilled ahead of a higher priority request. - If a transaction contains multiple operations with different priorities, Cloud Spanner does not guarantee to process the higher priority operations first. There may be other constraints to satisfy, such as order of operations.
Variants
PRIORITY_UNSPECIFIED
is equivalent to PRIORITY_HIGH
.
This specifies that the request is low priority.
This specifies that the request is medium priority.
This specifies that the request is high priority.
Implementations
Trait Implementations
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
Auto Trait Implementations
impl RefUnwindSafe for Priority
impl UnwindSafe for Priority
Blanket Implementations
Mutably borrows from an owned value. Read more
Compare self to key
and return true
if they are equal.
Wrap the input message T
in a tonic::Request
pub fn vzip(self) -> V
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more