Document Center

    Message Service

    • Product Updates and Announcements
      • [Notice] New limit on the length of topic and queue names
    • Document Overview
      • Overview
    • Release notes
    • Product introduction
      • What is MNS?
      • Benefits
      • Terms
        • Queue-related terms
        • Topic-related terms
      • Limits
      • Regions and endpoints
      • FAQ
    • Pricing
      • Pricing
      • Overdue payments
      • FAQ about billing
    • Quick-start
      • Overview
      • Activate Message Service
      • Get started with queue-based message services
        • Create a queue
        • Send messages
        • Receive a message
      • Get started with topic-based message services
        • Create a queue
        • Create a topic
        • Create a subscription
        • Publish a message
        • Receive messages
      • FAQ about messages
    • Queue
      • Queue-related operations
      • Manage queues in the console
      • FAQ about queues
    • Topic
      • Topic-related operations
      • Manage topics in the console
      • Push types
        • Push messages to a queue
        • Push messages to an HTTP server
      • FAQ about topics
    • Log Management
      • Log management
      • Authorize a RAM user to manage MNS logs
      • Instructions
        • Push logs to Log Service
        • Push logs to OSS
        • Enable logging for queues
        • Enable logging for a topic
        • View MNS logs in the Log Service console
        • View MNS logs in the OSS console
    • Best Practices
      • Send messages from one producer client to multiple consumer clients
      • Manage the visibility timeout of a message
      • Long polling mechanism
      • Encrypt messages
      • Ensure the ordering of queue messages
      • Transfer oversized messages
      • Handle transactional messages
      • Filter messages
      • FAQ about best practices
    • SDK Reference
      • SDK for Java
        • Release notes of the SDK for Java
        • Manage queues
        • Manage topics
        • Use sample code to perform a concurrency test
        • Use sample code to send messages
        • Use sample code to receive messages
      • Python SDK
        • Release notes of the SDK for Python
        • Manage queues
        • Manage topics
        • Manage topics
        • Use sample code to enable HTTP endpoints
        • Publish messages to a topic
      • C# SDK
        • Release notes of the SDK for C#
        • Manage queues
        • Manage topics
      • PHP SDK
        • Release notes of the SDK for PHP
        • Manage queues
        • Manage topics
      • JMS SDK
      • Release notes of the SDK for C++
      • SDK for Go
      • Android SDK
        • Notice
      • SDK for Objective-C iOS
        • Note
      • FAQ about SDKs
    • Access Control
      • Authorize a RAM user to access MNS
        • Create a RAM user
        • Create a custom policy
        • Authorize a RAM user to access MNS
        • Sample RAM policies
        • Mappings between MNS API operations and RAM permissions
      • FAQ about security
    • API Reference
      • Basic concepts
        • Account
        • Queue
        • QueueMessage
        • Topic
        • TopicMessage
        • Subscription
        • Endpoint
        • NotifyStrategy
        • NotifyContentFormat
      • Call MNS APIs
        • Request structure
        • Common parameters
        • Response
        • Sign requests
        • Sign a request that is sent to an endpoint
      • MNS APIs about queues
        • List of operations by function
        • MNS APIs about queues
          • CreateQueue
          • SetQueueAttributes
          • GetQueueAttributes
          • DeleteQueue
          • ListQueue
        • MNS APIs about messages
          • SendMessage
          • BatchSendMessage
          • ReceiveMessage
          • BatchReceiveMessage
          • DeleteMessage
          • BatchDeleteMessage
          • PeekMessage
          • BatchPeekMessage
          • ChangeMessageVisibility
      • MNS APIs about topics
        • RESTful API operations about topics
        • Topic management
          • CreateTopic
          • SetTopicAttributes
          • GetTopicAttributes
          • DeleteTopic
          • ListTopic
        • Subscription management
          • Subscribe
          • SetSubscriptionAttributes
          • GetSubscriptionAttributes
          • Unsubscribe
          • ListSubscriptionByTopic
        • MNS APIs about messages
          • PublishMessage
        • Notification management
          • HttpEndpoint
      • Common errors
        • Syntax of error responses
        • Error codes
      • FAQ about API operations
    • Developer Tools
      • Log query tool
      • Log export tool
      • On-premises debugging tool of topic HTTP endpoints
      • Signature verification tool
    • FAQ
    • Agreement
      • Terms
 
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      Message Service

      • What are the limits of topics?
      • How long does a push request sent from a topic time out if the specified HTTP endpoint does not respond to the request?
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