This release adds support for the topic attribute FifoThroughputScope for SNS FIFO topics. For details, see the documentation history in the Amazon Simple Notification Service Developer Guide.

Author: aws-sdk-dotnet-automation

generator/ServiceModels/sns/sns-2010-03-31.docs.json

@@ -146,6 +146,24 @@ public CreateTopicRequest(string name)
         /// (Optional) To override the generated value, you can specify a value for the <c>MessageDeduplicationId</c>
         /// parameter for the <c>Publish</c> action.
         /// </para>
+        ///  </li> </ul> </li> </ul> <ul> <li> 
+        /// <para>
+        ///  <c>FifoThroughputScope</c> – Enables higher throughput for your FIFO topic by adjusting
+        /// the scope of deduplication. This attribute has two possible values:
+        /// </para>
+        ///  <ul> <li> 
+        /// <para>
+        ///  <c>Topic</c> – The scope of message deduplication is across the entire topic. This
+        /// is the default value and maintains existing behavior, with a maximum throughput of
+        /// 3000 messages per second or 20MB per second, whichever comes first.
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
+        ///  <c>MessageGroup</c> – The scope of deduplication is within each individual message
+        /// group, which enables higher throughput per topic subject to regional quotas. For more
+        /// information on quotas or to request an increase, see <a href="https://docs.aws.amazon.com/general/latest/gr/sns.html">Amazon
+        /// SNS service quotas</a> in the Amazon Web Services General Reference.
+        /// </para>
         ///  </li> </ul> </li> </ul>
         /// </summary>
         public Dictionary<string, string> Attributes

generator/ServiceModels/sns/sns-2010-03-31.normal.json

@@ -116,14 +116,31 @@ internal bool IsSetMessageAttributes()
         /// <para>
         /// This parameter applies only to FIFO (first-in-first-out) topics.
         /// </para>
-        ///  
+        ///  <ul> <li> 
         /// <para>
-        /// The token used for deduplication of messages within a 5-minute minimum deduplication
-        /// interval. If a message with a particular <c>MessageDeduplicationId</c> is sent successfully,
-        /// subsequent messages with the same <c>MessageDeduplicationId</c> are accepted successfully
-        /// but aren't delivered.
+        /// This parameter applies only to FIFO (first-in-first-out) topics. The <c>MessageDeduplicationId</c>
+        /// can contain up to 128 alphanumeric characters <c>(a-z, A-Z, 0-9)</c> and punctuation
+        /// <c>(!"#$%&amp;'()*+,-./:;&lt;=&gt;?@[\]^_`{|}~)</c>.
         /// </para>
-        ///  <ul> <li> 
+        ///  </li> <li> 
+        /// <para>
+        /// Every message must have a unique <c>MessageDeduplicationId</c>, which is a token used
+        /// for deduplication of sent messages within the 5 minute minimum deduplication interval.
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
+        /// The scope of deduplication depends on the <c>FifoThroughputScope</c> attribute, when
+        /// set to <c>Topic</c> the message deduplication scope is across the entire topic, when
+        /// set to <c>MessageGroup</c> the message deduplication scope is within each individual
+        /// message group. 
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
+        /// If a message with a particular <c>MessageDeduplicationId</c> is sent successfully,
+        /// subsequent messages within the deduplication scope and interval, with the same <c>MessageDeduplicationId</c>,
+        /// are accepted successfully but aren't delivered.
+        /// </para>
+        ///  </li> <li> 
         /// <para>
         /// Every message must have a unique <c>MessageDeduplicationId</c>.
         /// </para>
@@ -150,15 +167,16 @@ internal bool IsSetMessageAttributes()
         ///  </li> </ul> </li> <li> 
         /// <para>
         /// When <c>ContentBasedDeduplication</c> is in effect, messages with identical content
-        /// sent within the deduplication interval are treated as duplicates and only one copy
-        /// of the message is delivered.
+        /// sent within the deduplication scope and interval are treated as duplicates and only
+        /// one copy of the message is delivered.
         /// </para>
         ///  </li> <li> 
         /// <para>
         /// If you send one message with <c>ContentBasedDeduplication</c> enabled, and then another
         /// message with a <c>MessageDeduplicationId</c> that is the same as the one generated
-        /// for the first <c>MessageDeduplicationId</c>, the two messages are treated as duplicates
-        /// and only one copy of the message is delivered. 
+        /// for the first <c>MessageDeduplicationId</c>, the two messages are treated as duplicates,
+        /// within the deduplication scope and interval, and only one copy of the message is delivered.
+        /// 
         /// </para>
         ///  </li> </ul> <note> 
         /// <para>
@@ -176,15 +194,7 @@ internal bool IsSetMessageAttributes()
         /// Amazon SNS continues to keep track of the message deduplication ID even after the
         /// message is received and deleted. 
         /// </para>
-        ///  </note> 
-        /// <para>
-        /// The length of <c>MessageDeduplicationId</c> is 128 characters.
-        /// </para>
-        ///  
-        /// <para>
-        ///  <c>MessageDeduplicationId</c> can contain alphanumeric characters <c>(a-z, A-Z, 0-9)</c>
-        /// and punctuation <c>(!"#$%&amp;'()*+,-./:;&lt;=&gt;?@[\]^_`{|}~)</c>.
-        /// </para>
+        ///  </note>
         /// </summary>
         public string MessageDeduplicationId
         {

sdk/src/Services/SimpleNotificationService/Generated/Model/CreateTopicRequest.cs

@@ -220,25 +220,68 @@ internal bool IsSetMessageAttributes()
         }
 
         /// <summary>
-        /// Gets and sets the property MessageDeduplicationId. 
+        /// Gets and sets the property MessageDeduplicationId. <ul> <li> 
         /// <para>
         /// This parameter applies only to FIFO (first-in-first-out) topics. The <c>MessageDeduplicationId</c>
         /// can contain up to 128 alphanumeric characters <c>(a-z, A-Z, 0-9)</c> and punctuation
         /// <c>(!"#$%&amp;'()*+,-./:;&lt;=&gt;?@[\]^_`{|}~)</c>.
         /// </para>
-        ///  
+        ///  </li> <li> 
         /// <para>
         /// Every message must have a unique <c>MessageDeduplicationId</c>, which is a token used
-        /// for deduplication of sent messages. If a message with a particular <c>MessageDeduplicationId</c>
-        /// is sent successfully, any message sent with the same <c>MessageDeduplicationId</c>
-        /// during the 5-minute deduplication interval is treated as a duplicate. 
+        /// for deduplication of sent messages within the 5 minute minimum deduplication interval.
         /// </para>
-        ///  
+        ///  </li> <li> 
+        /// <para>
+        /// The scope of deduplication depends on the <c>FifoThroughputScope</c> attribute, when
+        /// set to <c>Topic</c> the message deduplication scope is across the entire topic, when
+        /// set to <c>MessageGroup</c> the message deduplication scope is within each individual
+        /// message group.
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
+        /// If a message with a particular <c>MessageDeduplicationId</c> is sent successfully,
+        /// subsequent messages within the deduplication scope and interval, with the same <c>MessageDeduplicationId</c>,
+        /// are accepted successfully but aren't delivered.
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
+        /// Every message must have a unique <c>MessageDeduplicationId</c>:
+        /// </para>
+        ///  <ul> <li> 
+        /// <para>
+        /// You may provide a <c>MessageDeduplicationId</c> explicitly.
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
+        /// If you aren't able to provide a <c>MessageDeduplicationId</c> and you enable <c>ContentBasedDeduplication</c>
+        /// for your topic, Amazon SNS uses a SHA-256 hash to generate the <c>MessageDeduplicationId</c>
+        /// using the body of the message (but not the attributes of the message).
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
+        /// If you don't provide a <c>MessageDeduplicationId</c> and the topic doesn't have <c>ContentBasedDeduplication</c>
+        /// set, the action fails with an error.
+        /// </para>
+        ///  </li> <li> 
+        /// <para>
+        /// If the topic has a <c>ContentBasedDeduplication</c> set, your <c>MessageDeduplicationId</c>
+        /// overrides the generated one. 
+        /// </para>
+        ///  </li> </ul> </li> <li> 
         /// <para>
-        /// If the topic has <c>ContentBasedDeduplication</c> set, the system generates a <c>MessageDeduplicationId</c>
-        /// based on the contents of the message. Your <c>MessageDeduplicationId</c> overrides
-        /// the generated one.
+        /// When <c>ContentBasedDeduplication</c> is in effect, messages with identical content
+        /// sent within the deduplication scope and interval are treated as duplicates and only
+        /// one copy of the message is delivered.
         /// </para>
+        ///  </li> <li> 
+        /// <para>
+        /// If you send one message with <c>ContentBasedDeduplication</c> enabled, and then another
+        /// message with a <c>MessageDeduplicationId</c> that is the same as the one generated
+        /// for the first <c>MessageDeduplicationId</c>, the two messages are treated as duplicates,
+        /// within the deduplication scope and interval, and only one copy of the message is delivered.
+        /// </para>
+        ///  </li> </ul>
         /// </summary>
         public string MessageDeduplicationId
         {