QueueBufferConfig (AWS SDK for Java

java.lang.Object
- com.amazonaws.services.sqs.buffered.QueueBufferConfig

public class QueueBufferConfig
extends Object

Field Summary

Fields
Modifier and Type	Field and Description
`static boolean`	`ADAPTIVE_PREFETCHING_DEFAULT`
`static int`	`LONGPOLL_WAIT_TIMEOUT_SECONDS_DEFAULT`
`static long`	`MAX_BATCH_OPEN_MS_DEFAULT` 200 milliseconds
`static long`	`MAX_BATCH_SIZE_BYTES_DEFAULT` 256 kilobytes
`static int`	`MAX_BATCH_SIZE_DEFAULT`
`static int`	`MAX_DONE_RECEIVE_BATCHES_DEFAULT` 10 batches
`static int`	`MAX_INFLIGHT_OUTBOUND_BATCHES_DEFAULT` 5 batches
`static int`	`MAX_INFLIGHT_RECEIVE_BATCHES_DEFAULT` 10 batches
`static int`	`MIN_RECEIVE_WAIT_TIME_MS_DEFAULT` 50 ms, which is in the ballpark for typical latency contacting a remote service like SQS
`static List<String>`	`RECEIVE_ATTRIBUTE_NAMES_DEFAULT`
`static List<String>`	`RECEIVE_MESSAGE_ATTRIBUTE_NAMES_DEFAULT`
`static long`	`SERVICE_MAX_BATCH_SIZE_BYTES` Updated as the service now supports messages of size max 256 KiB.
`static int`	`VISIBILITY_TIMEOUT_SECONDS_DEFAULT` -1, which means use the visibility timeout of the queue

Constructor Summary

Constructors
Constructor and Description
`QueueBufferConfig()`
`QueueBufferConfig(long maxBatchOpenMs, int maxInflightOutboundBatches, int maxInflightReceiveBatches, int maxDoneReceiveBatches, boolean paramLongPoll, long maxBatchSizeBytes, int visibilityTimeout, int longPollTimeout, int maxBatch)`
`QueueBufferConfig(QueueBufferConfig other)` copy constructor

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`getLongPollWaitTimeoutSeconds()` Specifies the amount of time, in seconds, the receive call will block on the server waiting for messages to arrive if the queue is empty when the receive call is first made.
`long`	`getMaxBatchOpenMs()` The maximum time (milliseconds) a send batch is held open for additional outbound requests.
`int`	`getMaxBatchSize()` Specifies the maximum number of entries the buffered client will put in a single batch request.
`long`	`getMaxBatchSizeBytes()` Maximum permitted size of a SendMessage or SendMessageBatch message, in bytes.
`int`	`getMaxDoneReceiveBatches()` If more than that number of completed receive batches are waiting in the buffer, the querying for new messages will stop. The larger this number, the more messages the queue buffer will pre-fetch and keep in the buffer on the client side, and the faster receive requests will be satisfied.
`int`	`getMaxInflightOutboundBatches()` The maximum number of concurrent batches for each type of outbound request.
`int`	`getMaxInflightReceiveBatches()` The maximum number of concurrent receive message batches.
`int`	`getMinReceiveWaitTimeMs()` Configures the minimum wait time for incoming receive message requests.
`List<String>`	`getReceiveAttributeNames()` Specifies the attributes receive calls will request.
`List<String>`	`getReceiveMessageAttributeNames()` Specifies the message attributes receive calls will request.
`int`	`getVisibilityTimeoutSeconds()` Custom visibility timeout to use when retrieving messages from SQS.
`boolean`	`isAdapativePrefetching()` If set, prefetching will be scaled with the number of in-flight incoming receive requests made to the client.
`boolean`	`isDeleteInBackground()` If set, even synchronous calls to delete messages will be made using background asynchronous batches.
`boolean`	`isFlushOnShutdown()` Returns the flushOnShutdown value.
`boolean`	`isLongPoll()`
`void`	`setAdaptivePrefetching(boolean adaptivePrefetching)` If set, prefetching will be scaled with the number of in-flight incoming receive requests made to the client.
`void`	`setDeleteInBackground(boolean deleteInBackground)` If set, even synchronous calls to delete messages will be made using background asynchronous batches.
`void`	`setFlushOnShutdown(boolean flushOnShutdown)` Sets the flushOnShutdown option.
`void`	`setLongPoll(boolean longPoll)` Specify "true" for receive requests to use long polling.
`void`	`setLongPollWaitTimeoutSeconds(int longPollWaitTimeoutSeconds)` Specifies the amount of time, in seconds, the receive call will block on the server waiting for messages to arrive if the queue is empty when the receive call is first made.
`void`	`setMaxBatchOpenMs(long maxBatchOpenMs)` The maximum time (milliseconds) a send batch is held open for additional outbound requests.
`void`	`setMaxBatchSize(int maxBatchSize)` Specifies the maximum number of entries the buffered client will put in a single batch request.
`void`	`setMaxBatchSizeBytes(long maxBatchSizeBytes)` Maximum permitted size of a SendMessage or SendMessageBatch message, in bytes.
`void`	`setMaxDoneReceiveBatches(int maxDoneReceiveBatches)` If more than that number of completed receive batches are waiting in the buffer, the querying for new messages will stop.
`void`	`setMaxInflightOutboundBatches(int maxInflightOutboundBatches)` The maximum number of concurrent batches for each type of outbound request.
`void`	`setMaxInflightReceiveBatches(int maxInflightReceiveBatches)` The maximum number of concurrent receive message batches.
`void`	`setMinReceiveWaitTimeMs(int minReceiveWaitTimeMs)` Configures the minimum wait time for incoming receive message requests.
`void`	`setReceiveAttributeNames(List<String> receiveAttributeNames)` Specifies the attributes receive calls will request.
`void`	`setReceiveMessageAttributeNames(List<String> receiveMessageAttributeNames)` Specifies the message attributes receive calls will request.
`void`	`setVisibilityTimeoutSeconds(int visibilityTimeoutSeconds)` Custom visibility timeout to use when retrieving messages from SQS.
`String`	`toString()`
`QueueBufferConfig`	`withAdapativePrefetching(boolean adaptivePrefetching)` If set, prefetching will be scaled with the number of in-flight incoming receive requests made to the client.
`QueueBufferConfig`	`withDeleteInBackground(boolean deleteInBackground)` If set, even synchronous calls to delete messages will be made using background asynchronous batches.
`QueueBufferConfig`	`withFlushOnShutdown(boolean flushOnShutdown)` Sets the flushOnShutdown option.
`QueueBufferConfig`	`withLongPoll(boolean longPoll)` Specify "true" for receive requests to use long polling.
`QueueBufferConfig`	`withLongPollWaitTimeoutSeconds(int longPollWaitTimeoutSeconds)` Specifies the amount of time, in seconds, the receive call will block on the server waiting for messages to arrive if the queue is empty when the receive call is first made.
`QueueBufferConfig`	`withMaxBatchOpenMs(long maxBatchOpenMs)` The maximum time (milliseconds) a send batch is held open for additional outbound requests.
`QueueBufferConfig`	`withMaxBatchSize(int maxBatchSize)` Specifies the maximum number of entries the buffered client will put in a single batch request.
`QueueBufferConfig`	`withMaxBatchSizeBytes(long maxBatchSizeBytes)` Maximum permitted size of a SendMessage or SendMessageBatch message, in bytes.
`QueueBufferConfig`	`withMaxDoneReceiveBatches(int maxDoneReceiveBatches)` If more than that number of completed receive batches are waiting in the buffer, the querying for new messages will stop.
`QueueBufferConfig`	`withMaxInflightOutboundBatches(int maxInflightOutboundBatches)` The maximum number of concurrent batches for each type of outbound request.
`QueueBufferConfig`	`withMaxInflightReceiveBatches(int maxInflightReceiveBatches)` The maximum number of concurrent receive message batches.
`QueueBufferConfig`	`withMinReceiveWaitTimeMs(int minReceiveWaitTimeMs)` Configures the minimum wait time for incoming receive message requests.
`QueueBufferConfig`	`withReceiveAttributeNames(List<String> receiveAttributes)` Specifies the attributes receive calls will request.
`QueueBufferConfig`	`withReceiveMessageAttributeNames(List<String> receiveMessageAttributes)` Specifies the message attributes receive calls will request.
`QueueBufferConfig`	`withVisibilityTimeoutSeconds(int visibilityTimeoutSeconds)` Custom visibility timeout to use when retrieving messages from SQS.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - MAX_BATCH_SIZE_DEFAULT
```
public static final int MAX_BATCH_SIZE_DEFAULT
```
    See Also:
    
    Constant Field Values
  - SERVICE_MAX_BATCH_SIZE_BYTES
```
public static final long SERVICE_MAX_BATCH_SIZE_BYTES
```
    Updated as the service now supports messages of size max 256 KiB.
    
    See Also:
    
    Constant Field Values
  - MAX_BATCH_OPEN_MS_DEFAULT
```
public static final long MAX_BATCH_OPEN_MS_DEFAULT
```
    200 milliseconds
    
    See Also:
    
    Constant Field Values
  - MAX_INFLIGHT_OUTBOUND_BATCHES_DEFAULT
```
public static final int MAX_INFLIGHT_OUTBOUND_BATCHES_DEFAULT
```
    5 batches
    
    See Also:
    
    Constant Field Values
  - MAX_INFLIGHT_RECEIVE_BATCHES_DEFAULT
```
public static final int MAX_INFLIGHT_RECEIVE_BATCHES_DEFAULT
```
    10 batches
    
    See Also:
    
    Constant Field Values
  - MAX_DONE_RECEIVE_BATCHES_DEFAULT
```
public static final int MAX_DONE_RECEIVE_BATCHES_DEFAULT
```
    10 batches
    
    See Also:
    
    Constant Field Values
  - MAX_BATCH_SIZE_BYTES_DEFAULT
```
public static final long MAX_BATCH_SIZE_BYTES_DEFAULT
```
    256 kilobytes
    
    See Also:
    
    Constant Field Values
  - VISIBILITY_TIMEOUT_SECONDS_DEFAULT
```
public static final int VISIBILITY_TIMEOUT_SECONDS_DEFAULT
```
    -1, which means use the visibility timeout of the queue
    
    See Also:
    
    Constant Field Values
  - LONGPOLL_WAIT_TIMEOUT_SECONDS_DEFAULT
```
public static final int LONGPOLL_WAIT_TIMEOUT_SECONDS_DEFAULT
```
    See Also:
    
    Constant Field Values
  - MIN_RECEIVE_WAIT_TIME_MS_DEFAULT
```
public static final int MIN_RECEIVE_WAIT_TIME_MS_DEFAULT
```
    50 ms, which is in the ballpark for typical latency contacting a remote service like SQS
    
    See Also:
    
    Constant Field Values
  - RECEIVE_MESSAGE_ATTRIBUTE_NAMES_DEFAULT
```
public static final List<String> RECEIVE_MESSAGE_ATTRIBUTE_NAMES_DEFAULT
```
  - RECEIVE_ATTRIBUTE_NAMES_DEFAULT
```
public static final List<String> RECEIVE_ATTRIBUTE_NAMES_DEFAULT
```
  - ADAPTIVE_PREFETCHING_DEFAULT
```
public static final boolean ADAPTIVE_PREFETCHING_DEFAULT
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - QueueBufferConfig
```
public QueueBufferConfig(long maxBatchOpenMs,
                         int maxInflightOutboundBatches,
                         int maxInflightReceiveBatches,
                         int maxDoneReceiveBatches,
                         boolean paramLongPoll,
                         long maxBatchSizeBytes,
                         int visibilityTimeout,
                         int longPollTimeout,
                         int maxBatch)
```
  - QueueBufferConfig
```
public QueueBufferConfig()
```
  - QueueBufferConfig
```
public QueueBufferConfig(QueueBufferConfig other)
```
    copy constructor
- Method Detail
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - getMaxBatchOpenMs
```
public long getMaxBatchOpenMs()
```
    The maximum time (milliseconds) a send batch is held open for additional outbound requests. The longer this timeout, the longer messages wait for other messages to be added to the batch. Increasing this timeout reduces the number of calls made and increases throughput, but also increases average message latency.
  - setMaxBatchOpenMs
```
public void setMaxBatchOpenMs(long maxBatchOpenMs)
```
    The maximum time (milliseconds) a send batch is held open for additional outbound requests. The longer this timeout, the longer messages wait for other messages to be added to the batch. Increasing this timeout reduces the number of calls made and increases throughput, but also increases average message latency.
  - withMaxBatchOpenMs
```
public QueueBufferConfig withMaxBatchOpenMs(long maxBatchOpenMs)
```
    The maximum time (milliseconds) a send batch is held open for additional outbound requests. The longer this timeout, the longer messages wait for other messages to be added to the batch. Increasing this timeout reduces the number of calls made and increases throughput, but also increases average message latency.
  - isDeleteInBackground
```
public boolean isDeleteInBackground()
```
    If set, even synchronous calls to delete messages will be made using background asynchronous batches. The client will return results indicating that the messages were deleted successfully even if the background calls eventually fail; the actual result of the deletions will be reported through the given handler instead (often just logging errors). This can be beneficial for decreasing message acknowledgement latency at the cost of potential duplicate messages (which can be produced by SQS itself anyway).
  - setDeleteInBackground
```
public void setDeleteInBackground(boolean deleteInBackground)
```
    If set, even synchronous calls to delete messages will be made using background asynchronous batches. The client will return results indicating that the messages were deleted successfully even if the background calls eventually fail; any errors result of the deletions will be reported through the given handler instead (often just logging errors). This can be beneficial for decreasing message acknowledgement latency at the cost of potential duplicate messages (which can be produced by SQS itself anyway).
  - withDeleteInBackground
```
public QueueBufferConfig withDeleteInBackground(boolean deleteInBackground)
```
    If set, even synchronous calls to delete messages will be made using background asynchronous batches. The client will return results indicating that the messages were deleted successfully even if the background calls eventually fail; the actual result of the deletions will be reported through the given handler instead (often just logging errors). This can be beneficial for decreasing message acknowledgement latency at the cost of potential duplicate messages (which can be produced by SQS itself anyway).
  - isLongPoll
```
public boolean isLongPoll()
```
    Returns:
    
    true if the queue buffer will use long polling while retrieving messages from the SQS server, false otherwise.
  - setLongPoll
```
public void setLongPoll(boolean longPoll)
```
    Specify "true" for receive requests to use long polling.
  - withLongPoll
```
public QueueBufferConfig withLongPoll(boolean longPoll)
```
    Specify "true" for receive requests to use long polling.
  - getMaxInflightOutboundBatches
```
public int getMaxInflightOutboundBatches()
```
    The maximum number of concurrent batches for each type of outbound request. The greater the number, the greater the throughput that can be achieved (at the expense of consuming more threads).
  - setMaxInflightOutboundBatches
```
public void setMaxInflightOutboundBatches(int maxInflightOutboundBatches)
```
    The maximum number of concurrent batches for each type of outbound request. The greater the number, the greater the throughput that can be achieved (at the expense of consuming more threads).
  - withMaxInflightOutboundBatches
```
public QueueBufferConfig withMaxInflightOutboundBatches(int maxInflightOutboundBatches)
```
    The maximum number of concurrent batches for each type of outbound request. The greater the number, the greater the throughput that can be achieved (at the expense of consuming more threads).
  - getMaxInflightReceiveBatches
```
public int getMaxInflightReceiveBatches()
```
    The maximum number of concurrent receive message batches. The greater this number, the faster the queue will be pulling messages from the SQS servers (at the expense of consuming more threads).
  - setMaxInflightReceiveBatches
```
public void setMaxInflightReceiveBatches(int maxInflightReceiveBatches)
```
    The maximum number of concurrent receive message batches. The greater this number, the faster the queue will be pulling messages from the SQS servers (at the expense of consuming more threads).
  - withMaxInflightReceiveBatches
```
public QueueBufferConfig withMaxInflightReceiveBatches(int maxInflightReceiveBatches)
```
    The maximum number of concurrent receive message batches. The greater this number, the faster the queue will be pulling messages from the SQS servers (at the expense of consuming more threads).
  - getMaxDoneReceiveBatches
```
public int getMaxDoneReceiveBatches()
```
    If more than that number of completed receive batches are waiting in the buffer, the querying for new messages will stop.
    The larger this number, the more messages the queue buffer will pre-fetch and keep in the buffer on the client side, and the faster receive requests will be satisfied.
    The visibility timeout of a pre-fetched message starts at the point of pre-fetch, which means that while the message is in the local buffer it is unavailable for other clients to process, and when this client retrieves it, part of the visibility timeout may have already expired.
    The number of messages prefetched will not exceed 10 * maxDoneReceiveBatches, as there can be a maximum of 10 messages per batch.
  - setMaxDoneReceiveBatches
```
public void setMaxDoneReceiveBatches(int maxDoneReceiveBatches)
```
    If more than that number of completed receive batches are waiting in the buffer, the querying for new messages will stop. The larger this number, the more messages the buffer queue will pre-fetch and keep in the buffer on the client side, and the faster receive requests will be satisfied. The visibility timeout of a pre-fetched message starts at the point of pre-fetch, which means that while the message is in the local buffer it is unavailable for other clients to process, and when this client retrieves it, part of the visibility timeout may have already expired. The number of messages prefetched will not exceed maxBatchSize * maxDoneReceiveBatches.
  - withMaxDoneReceiveBatches
```
public QueueBufferConfig withMaxDoneReceiveBatches(int maxDoneReceiveBatches)
```
    If more than that number of completed receive batches are waiting in the buffer, the querying for new messages will stop. The larger this number, the more messages the buffer queue will pre-fetch and keep in the buffer on the client side, and the faster receive requests will be satisfied. The visibility timeout of a pre-fetched message starts at the point of pre-fetch, which means that while the message is in the local buffer it is unavailable for other clients to process, and when this client retrieves it, part of the visibility timeout may have already expired. The number of messages prefetched will not exceed maxBatchSize * maxDoneReceiveBatches.
  - getMaxBatchSizeBytes
```
public long getMaxBatchSizeBytes()
```
    Maximum permitted size of a SendMessage or SendMessageBatch message, in bytes. This setting is also enforced on the server, and if this client submits a request of a size larger than the server can support, the server will reject the request.
  - setMaxBatchSizeBytes
```
public void setMaxBatchSizeBytes(long maxBatchSizeBytes)
```
    Maximum permitted size of a SendMessage or SendMessageBatch message, in bytes. This setting is also enforced on the server, and if this client submits a request of a size larger than the server can support, the server will reject the request.
    
    Throws:
    
    IllegalArgumentException - if the size being set is greater than the service allowed size for message body.
  - withMaxBatchSizeBytes
```
public QueueBufferConfig withMaxBatchSizeBytes(long maxBatchSizeBytes)
```
    Maximum permitted size of a SendMessage or SendMessageBatch message, in bytes. This setting is also enforced on the server, and if this client submits a request of a size larger than the server can support, the server will reject the request.
    
    Throws:
    
    IllegalArgumentException - if the size being set is greater than the service allowed size for message body.
  - getVisibilityTimeoutSeconds
```
public int getVisibilityTimeoutSeconds()
```
    Custom visibility timeout to use when retrieving messages from SQS. If set to a value greater than zero, this timeout will override the default visibility timeout set on the SQS queue. Set it to -1 to use the default visiblity timeout of the queue. Visibility timeout of 0 seconds is not supported.
  - setVisibilityTimeoutSeconds
```
public void setVisibilityTimeoutSeconds(int visibilityTimeoutSeconds)
```
    Custom visibility timeout to use when retrieving messages from SQS. If set to a value greater than zero, this timeout will override the default visibility timeout set on the SQS queue. Set it to -1 to use the default visiblity timeout of the queue. Visibility timeout of 0 seconds is not supported.
  - withVisibilityTimeoutSeconds
```
public QueueBufferConfig withVisibilityTimeoutSeconds(int visibilityTimeoutSeconds)
```
    Custom visibility timeout to use when retrieving messages from SQS. If set to a value greater than zero, this timeout will override the default visibility timeout set on the SQS queue. Set it to -1 to use the default visiblity timeout of the queue. Visibility timeout of 0 seconds is not supported.
  - setLongPollWaitTimeoutSeconds
```
public void setLongPollWaitTimeoutSeconds(int longPollWaitTimeoutSeconds)
```
    Specifies the amount of time, in seconds, the receive call will block on the server waiting for messages to arrive if the queue is empty when the receive call is first made. This setting has no effect if long polling is disabled.
  - getLongPollWaitTimeoutSeconds
```
public int getLongPollWaitTimeoutSeconds()
```
    Specifies the amount of time, in seconds, the receive call will block on the server waiting for messages to arrive if the queue is empty when the receive call is first made. This setting has no effect if long polling is disabled.
  - withLongPollWaitTimeoutSeconds
```
public QueueBufferConfig withLongPollWaitTimeoutSeconds(int longPollWaitTimeoutSeconds)
```
    Specifies the amount of time, in seconds, the receive call will block on the server waiting for messages to arrive if the queue is empty when the receive call is first made. This setting has no effect if long polling is disabled.
  - getMinReceiveWaitTimeMs
```
public int getMinReceiveWaitTimeMs()
```
    Configures the minimum wait time for incoming receive message requests. Without a non-zero minimum wait time, threads can easily waste CPU time busy-waiting against empty local buffers. Avoid setting this to 0 unless you are confident threads will do useful work in-between each call to receive messages!
    This will be applied to both requests that explicitly set WaitTimeSeconds and those that inherit the ReceiveMessageWaitTimeSeconds queue attribute.
  - setMinReceiveWaitTimeMs
```
public void setMinReceiveWaitTimeMs(int minReceiveWaitTimeMs)
```
    Configures the minimum wait time for incoming receive message requests. Without a non-zero minimum wait time, threads can easily waste CPU time busy-waiting against empty local buffers. Avoid setting this to 0 unless you are confident threads will do useful work in-between each call to receive messages!
    This will be applied to both requests that explicitly set WaitTimeSeconds and those that inherit the ReceiveMessageWaitTimeSeconds queue attribute.
  - withMinReceiveWaitTimeMs
```
public QueueBufferConfig withMinReceiveWaitTimeMs(int minReceiveWaitTimeMs)
```
    Configures the minimum wait time for incoming receive message requests. Without a non-zero minimum wait time, threads can easily waste CPU time busy-waiting against empty local buffers. Avoid setting this to 0 unless you are confident threads will do useful work in-between each call to receive messages!
    This will be applied to both requests that explicitly set WaitTimeSeconds and those that inherit the ReceiveMessageWaitTimeSeconds queue attribute.
  - getMaxBatchSize
```
public int getMaxBatchSize()
```
    Specifies the maximum number of entries the buffered client will put in a single batch request.
  - setMaxBatchSize
```
public void setMaxBatchSize(int maxBatchSize)
```
    Specifies the maximum number of entries the buffered client will put in a single batch request.
  - withMaxBatchSize
```
public QueueBufferConfig withMaxBatchSize(int maxBatchSize)
```
    Specifies the maximum number of entries the buffered client will put in a single batch request.
  - getReceiveAttributeNames
```
public List<String> getReceiveAttributeNames()
```
    Specifies the attributes receive calls will request. Only receive message requests that request the same set of attributes will be satisfied from the receive buffers.
    The default value is an empty list, so any receive requests that require attributes will not be fulfilled from buffers.
  - setReceiveAttributeNames
```
public void setReceiveAttributeNames(List<String> receiveAttributeNames)
```
    Specifies the attributes receive calls will request. Only receive message requests that request the same set of attributes will be satisfied from the receive buffers.
    The default value is an empty list, so any receive requests that require attributes will not be fulfilled from buffers.
  - withReceiveAttributeNames
```
public QueueBufferConfig withReceiveAttributeNames(List<String> receiveAttributes)
```
    Specifies the attributes receive calls will request. Only receive message requests that request the same set of attributes will be satisfied from the receive buffers.
    The default value is an empty list, so any receive requests that require attributes will not be fulfilled from buffers.
  - getReceiveMessageAttributeNames
```
public List<String> getReceiveMessageAttributeNames()
```
    Specifies the message attributes receive calls will request. Only receive message requests that request the same set of attributes will be satisfied from the receive buffers.
    The default value is an empty list, so any receive requests that require message attributes will not be fulfilled from buffers.
  - setReceiveMessageAttributeNames
```
public void setReceiveMessageAttributeNames(List<String> receiveMessageAttributeNames)
```
    Specifies the message attributes receive calls will request. Only receive message requests that request the same set of attributes will be satisfied from the receive buffers.
    The default value is an empty list, so any receive requests that require message attributes will not be fulfilled from buffers.
  - withReceiveMessageAttributeNames
```
public QueueBufferConfig withReceiveMessageAttributeNames(List<String> receiveMessageAttributes)
```
    Specifies the message attributes receive calls will request. Only receive message requests that request the same set of attributes will be satisfied from the receive buffers.
    The default value is an empty list, so any receive requests that require message attributes will not be fulfilled from buffers.
  - setAdaptivePrefetching
```
public void setAdaptivePrefetching(boolean adaptivePrefetching)
```
    If set, prefetching will be scaled with the number of in-flight incoming receive requests made to the client. The advantage of this is reducing the number of outgoing requests made to SQS when incoming requests are reduced: in particular, if all incoming requests stop no future requests to SQS will be made. The disadvantage is increased latency when incoming requests first start occurring.
  - isAdapativePrefetching
```
public boolean isAdapativePrefetching()
```
    If set, prefetching will be scaled with the number of in-flight incoming receive requests made to the client. The advantage of this is reducing the number of outgoing requests made to SQS when incoming requests are reduced: in particular, if all incoming requests stop no future requests to SQS will be made. The disadvantage is increased latency when incoming requests first start occurring.
  - withAdapativePrefetching
```
public QueueBufferConfig withAdapativePrefetching(boolean adaptivePrefetching)
```
    If set, prefetching will be scaled with the number of in-flight incoming receive requests made to the client. The advantage of this is reducing the number of outgoing requests made to SQS when incoming requests are reduced: in particular, if all incoming requests stop no future requests to SQS will be made. The disadvantage is increased latency when incoming requests first start occurring.
  - isFlushOnShutdown
```
public boolean isFlushOnShutdown()
```
    Returns the flushOnShutdown value. The default value is false which indicates flushOnShutdown is disabled. Enabling this option will flush the pending requests in the SendQueueBuffer during shutdown.
    
    Returns:
    
    true if flushOnShutdown is enabled, otherwise false.
  - setFlushOnShutdown
```
public void setFlushOnShutdown(boolean flushOnShutdown)
```
    Sets the flushOnShutdown option. The default value is false which indicates flushOnShutdown is disabled. Enabling this option will flush the pending requests in the SendQueueBuffer during shutdown.
    
    Parameters:
    
    flushOnShutdown - boolean value to configure flushOnShutdown.
  - withFlushOnShutdown
```
public QueueBufferConfig withFlushOnShutdown(boolean flushOnShutdown)
```
    Sets the flushOnShutdown option. The default value is false which indicates flushOnShutdown is disabled. Enabling this option will flush the pending requests in the SendQueueBuffer during shutdown.
    
    Parameters:
    
    flushOnShutdown - boolean value to configure flushOnShutdown.
    
    Returns:
    
    This object for method chaining.

Did this page help you?

Class QueueBufferConfig

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MAX_BATCH_SIZE_DEFAULT

SERVICE_MAX_BATCH_SIZE_BYTES

MAX_BATCH_OPEN_MS_DEFAULT

MAX_INFLIGHT_OUTBOUND_BATCHES_DEFAULT

MAX_INFLIGHT_RECEIVE_BATCHES_DEFAULT

MAX_DONE_RECEIVE_BATCHES_DEFAULT

MAX_BATCH_SIZE_BYTES_DEFAULT

VISIBILITY_TIMEOUT_SECONDS_DEFAULT

LONGPOLL_WAIT_TIMEOUT_SECONDS_DEFAULT

MIN_RECEIVE_WAIT_TIME_MS_DEFAULT

RECEIVE_MESSAGE_ATTRIBUTE_NAMES_DEFAULT

RECEIVE_ATTRIBUTE_NAMES_DEFAULT

ADAPTIVE_PREFETCHING_DEFAULT

Constructor Detail

QueueBufferConfig

QueueBufferConfig

QueueBufferConfig

Method Detail

toString

getMaxBatchOpenMs

setMaxBatchOpenMs

withMaxBatchOpenMs

isDeleteInBackground

setDeleteInBackground

withDeleteInBackground

isLongPoll

setLongPoll

withLongPoll

getMaxInflightOutboundBatches

setMaxInflightOutboundBatches

withMaxInflightOutboundBatches

getMaxInflightReceiveBatches

setMaxInflightReceiveBatches

withMaxInflightReceiveBatches

getMaxDoneReceiveBatches

setMaxDoneReceiveBatches

withMaxDoneReceiveBatches

getMaxBatchSizeBytes

setMaxBatchSizeBytes

withMaxBatchSizeBytes

getVisibilityTimeoutSeconds

setVisibilityTimeoutSeconds

withVisibilityTimeoutSeconds

setLongPollWaitTimeoutSeconds

getLongPollWaitTimeoutSeconds

withLongPollWaitTimeoutSeconds

getMinReceiveWaitTimeMs

setMinReceiveWaitTimeMs

withMinReceiveWaitTimeMs

getMaxBatchSize

setMaxBatchSize

withMaxBatchSize

getReceiveAttributeNames

setReceiveAttributeNames

withReceiveAttributeNames

getReceiveMessageAttributeNames

setReceiveMessageAttributeNames

withReceiveMessageAttributeNames

setAdaptivePrefetching

isAdapativePrefetching

withAdapativePrefetching

isFlushOnShutdown

setFlushOnShutdown

withFlushOnShutdown