Struct aws_sdk_dynamodb::client::fluent_builders::DescribeLimits
source · [−]pub struct DescribeLimits { /* private fields */ }
Expand description
Fluent builder constructing a request to DescribeLimits
.
Returns the current provisioned-capacity quotas for your Amazon Web Services account in a Region, both for the Region as a whole and for any one DynamoDB table that you create there.
When you establish an Amazon Web Services account, the account has initial quotas on the maximum read capacity units and write capacity units that you can provision across all of your DynamoDB tables in a given Region. Also, there are per-table quotas that apply when you create a table there. For more information, see Service, Account, and Table Quotas page in the Amazon DynamoDB Developer Guide.
Although you can increase these quotas by filing a case at Amazon Web Services Support Center, obtaining the increase is not instantaneous. The DescribeLimits
action lets you write code to compare the capacity you are currently using to those quotas imposed by your account so that you have enough time to apply for an increase before you hit a quota.
For example, you could use one of the Amazon Web Services SDKs to do the following:
-
Call
DescribeLimits
for a particular Region to obtain your current account quotas on provisioned capacity there. -
Create a variable to hold the aggregate read capacity units provisioned for all your tables in that Region, and one to hold the aggregate write capacity units. Zero them both.
-
Call
ListTables
to obtain a list of all your DynamoDB tables. -
For each table name listed by
ListTables
, do the following:-
Call
DescribeTable
with the table name. -
Use the data returned by
DescribeTable
to add the read capacity units and write capacity units provisioned for the table itself to your variables. -
If the table has one or more global secondary indexes (GSIs), loop over these GSIs and add their provisioned capacity values to your variables as well.
-
-
Report the account quotas for that Region returned by
DescribeLimits
, along with the total current provisioned capacity levels you have calculated.
This will let you see whether you are getting close to your account-level quotas.
The per-table quotas apply only when you are creating a new table. They restrict the sum of the provisioned capacity of the new table itself and all its global secondary indexes.
For existing tables and their GSIs, DynamoDB doesn't let you increase provisioned capacity extremely rapidly, but the only quota that applies is that the aggregate provisioned capacity over all your tables and GSIs cannot exceed either of the per-account quotas.
DescribeLimits
should only be called periodically. You can expect throttling errors if you call it more than once in a minute.
The DescribeLimits
Request element has no content.
Implementations
sourceimpl DescribeLimits
impl DescribeLimits
sourcepub async fn send(
self
) -> Result<DescribeLimitsOutput, SdkError<DescribeLimitsError>>
pub async fn send(
self
) -> Result<DescribeLimitsOutput, SdkError<DescribeLimitsError>>
Sends the request and returns the response.
If an error occurs, an SdkError
will be returned with additional details that
can be matched against.
By default, any retryable failures will be retried twice. Retry behavior is configurable with the RetryConfig, which can be set when configuring the client.
Trait Implementations
sourceimpl Clone for DescribeLimits
impl Clone for DescribeLimits
sourcefn clone(&self) -> DescribeLimits
fn clone(&self) -> DescribeLimits
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
Auto Trait Implementations
impl !RefUnwindSafe for DescribeLimits
impl Send for DescribeLimits
impl Sync for DescribeLimits
impl Unpin for DescribeLimits
impl !UnwindSafe for DescribeLimits
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more