Network.AWS.Kinesis.UpdateShardCount

Updates the shard count of the specified stream to the specified number of shards.

Updating the shard count is an asynchronous operation. Upon receiving the request, Amazon Kinesis returns immediately and sets the status of the stream to UPDATING . After the update is complete, Amazon Kinesis sets the status of the stream back to ACTIVE . Depending on the size of the stream, the scaling action could take a few minutes to complete. You can continue to read and write data to your stream while its status is UPDATING .

To update the shard count, Amazon Kinesis performs splits or merges on individual shards. This can cause short-lived shards to be created, in addition to the final shards. We recommend that you double or halve the shard count, as this results in the fewest number of splits or merges.

This operation has the following limits, which are per region per account unless otherwise noted:

• scale more than twice per rolling 24 hour period
• scale up above double your current shard count
• scale down below half your current shard count
• scale up above 200 shards in a stream
• scale a stream with more than 200 shards down unless the result is less than 200 shards
• scale up above the shard limits for your account

For the default limits for an AWS account, see Streams Limits in the Amazon Kinesis Streams Developer Guide . If you need to increase a limit, contact AWS Support .

Creating a Request

updateShardCount

Arguments

:: Text

uscStreamName

-> Natural

uscTargetShardCount

-> ScalingType

uscScalingType

-> UpdateShardCount

Creates a value of UpdateShardCount with the minimum fields required to make a request.

Use one of the following lenses to modify other fields as desired:

• uscStreamName - The name of the stream.
• uscTargetShardCount - The new number of shards.
• uscScalingType - The scaling type. Uniform scaling creates shards of equal size.

data UpdateShardCount

See: updateShardCount smart constructor.

Instances

Eq UpdateShardCount

Methods

(==) :: UpdateShardCount -> UpdateShardCount -> Bool

(/=) :: UpdateShardCount -> UpdateShardCount -> Bool

Data UpdateShardCount

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> UpdateShardCount -> c UpdateShardCount

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c UpdateShardCount

toConstr :: UpdateShardCount -> Constr

dataTypeOf :: UpdateShardCount -> DataType

dataCast1 :: Typeable (* -> *) t => (forall d. Data d => c (t d)) -> Maybe (c UpdateShardCount)

dataCast2 :: Typeable (* -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c UpdateShardCount)

gmapT :: (forall b. Data b => b -> b) -> UpdateShardCount -> UpdateShardCount

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> UpdateShardCount -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> UpdateShardCount -> r

gmapQ :: (forall d. Data d => d -> u) -> UpdateShardCount -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> UpdateShardCount -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> UpdateShardCount -> m UpdateShardCount

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> UpdateShardCount -> m UpdateShardCount

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> UpdateShardCount -> m UpdateShardCount

Read UpdateShardCount

Methods

readsPrec :: Int -> ReadS UpdateShardCount

readList :: ReadS [UpdateShardCount]

readPrec :: ReadPrec UpdateShardCount

readListPrec :: ReadPrec [UpdateShardCount]

Show UpdateShardCount

Methods

showsPrec :: Int -> UpdateShardCount -> ShowS

show :: UpdateShardCount -> String

showList :: [UpdateShardCount] -> ShowS

Generic UpdateShardCount

Associated Types

type Rep UpdateShardCount :: * -> *

Methods

from :: UpdateShardCount -> Rep UpdateShardCount x

to :: Rep UpdateShardCount x -> UpdateShardCount

Hashable UpdateShardCount

Methods

hashWithSalt :: Int -> UpdateShardCount -> Int

hash :: UpdateShardCount -> Int

ToJSON UpdateShardCount

Methods

toJSON :: UpdateShardCount -> Value

toEncoding :: UpdateShardCount -> Encoding

toJSONList :: [UpdateShardCount] -> Value

toEncodingList :: [UpdateShardCount] -> Encoding

NFData UpdateShardCount

Methods

rnf :: UpdateShardCount -> ()

AWSRequest UpdateShardCount

Associated Types

type Rs UpdateShardCount :: *

Methods

request :: UpdateShardCount -> Request UpdateShardCount

response :: MonadResource m => Logger -> Service -> Proxy * UpdateShardCount -> ClientResponse -> m (Response UpdateShardCount)

ToQuery UpdateShardCount

Methods

toQuery :: UpdateShardCount -> QueryString

ToPath UpdateShardCount

Methods

toPath :: UpdateShardCount -> ByteString

ToHeaders UpdateShardCount

Methods

toHeaders :: UpdateShardCount -> [Header]

type Rep UpdateShardCount

type Rep UpdateShardCount = D1 (MetaData "UpdateShardCount" "Network.AWS.Kinesis.UpdateShardCount" "amazonka-kinesis-1.5.0-9sBOxcpdcTN2BghkYmkXAp" False) (C1 (MetaCons "UpdateShardCount'" PrefixI True) ((:*:) (S1 (MetaSel (Just Symbol "_uscStreamName") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Text)) ((:*:) (S1 (MetaSel (Just Symbol "_uscTargetShardCount") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Nat)) (S1 (MetaSel (Just Symbol "_uscScalingType") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 ScalingType)))))

type Rs UpdateShardCount

type Rs UpdateShardCount = UpdateShardCountResponse

Request Lenses

uscStreamName :: Lens' UpdateShardCount Text

The name of the stream.

uscTargetShardCount :: Lens' UpdateShardCount Natural

The new number of shards.

uscScalingType :: Lens' UpdateShardCount ScalingType

The scaling type. Uniform scaling creates shards of equal size.

Destructuring the Response

updateShardCountResponse

Arguments

:: Int

uscrsResponseStatus

-> UpdateShardCountResponse

Creates a value of UpdateShardCountResponse with the minimum fields required to make a request.

Use one of the following lenses to modify other fields as desired:

• uscrsTargetShardCount - The updated number of shards.
• uscrsStreamName - The name of the stream.
• uscrsCurrentShardCount - The current number of shards.
• uscrsResponseStatus - -- | The response status code.

data UpdateShardCountResponse

See: updateShardCountResponse smart constructor.

Instances

Eq UpdateShardCountResponse

Methods

(==) :: UpdateShardCountResponse -> UpdateShardCountResponse -> Bool

(/=) :: UpdateShardCountResponse -> UpdateShardCountResponse -> Bool

Data UpdateShardCountResponse

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> UpdateShardCountResponse -> c UpdateShardCountResponse

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c UpdateShardCountResponse

toConstr :: UpdateShardCountResponse -> Constr

dataTypeOf :: UpdateShardCountResponse -> DataType

dataCast1 :: Typeable (* -> *) t => (forall d. Data d => c (t d)) -> Maybe (c UpdateShardCountResponse)

dataCast2 :: Typeable (* -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c UpdateShardCountResponse)

gmapT :: (forall b. Data b => b -> b) -> UpdateShardCountResponse -> UpdateShardCountResponse

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> UpdateShardCountResponse -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> UpdateShardCountResponse -> r

gmapQ :: (forall d. Data d => d -> u) -> UpdateShardCountResponse -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> UpdateShardCountResponse -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> UpdateShardCountResponse -> m UpdateShardCountResponse

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> UpdateShardCountResponse -> m UpdateShardCountResponse

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> UpdateShardCountResponse -> m UpdateShardCountResponse

Read UpdateShardCountResponse

Methods

readsPrec :: Int -> ReadS UpdateShardCountResponse

readList :: ReadS [UpdateShardCountResponse]

readPrec :: ReadPrec UpdateShardCountResponse

readListPrec :: ReadPrec [UpdateShardCountResponse]

Show UpdateShardCountResponse

Methods

showsPrec :: Int -> UpdateShardCountResponse -> ShowS

show :: UpdateShardCountResponse -> String

showList :: [UpdateShardCountResponse] -> ShowS

Generic UpdateShardCountResponse

Associated Types

type Rep UpdateShardCountResponse :: * -> *

Methods

from :: UpdateShardCountResponse -> Rep UpdateShardCountResponse x

to :: Rep UpdateShardCountResponse x -> UpdateShardCountResponse

NFData UpdateShardCountResponse

Methods

rnf :: UpdateShardCountResponse -> ()

type Rep UpdateShardCountResponse

type Rep UpdateShardCountResponse = D1 (MetaData "UpdateShardCountResponse" "Network.AWS.Kinesis.UpdateShardCount" "amazonka-kinesis-1.5.0-9sBOxcpdcTN2BghkYmkXAp" False) (C1 (MetaCons "UpdateShardCountResponse'" PrefixI True) ((:*:) ((:*:) (S1 (MetaSel (Just Symbol "_uscrsTargetShardCount") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 (Maybe Nat))) (S1 (MetaSel (Just Symbol "_uscrsStreamName") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 (Maybe Text)))) ((:*:) (S1 (MetaSel (Just Symbol "_uscrsCurrentShardCount") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 (Maybe Nat))) (S1 (MetaSel (Just Symbol "_uscrsResponseStatus") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Int)))))

Response Lenses

uscrsTargetShardCount :: Lens' UpdateShardCountResponse (Maybe Natural)

The updated number of shards.

uscrsStreamName :: Lens' UpdateShardCountResponse (Maybe Text)

The name of the stream.

uscrsCurrentShardCount :: Lens' UpdateShardCountResponse (Maybe Natural)

The current number of shards.

uscrsResponseStatus :: Lens' UpdateShardCountResponse Int

• - | The response status code.