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    Use Limits

    Last updated: 2023-09-15 17:08:08
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      Service Feature Limits

      Feature
      Limit Item
      Description
      One-to-one/group message
      Content length
      A one-to-one or group message must be no longer than 12KB.
      Sending frequency
      One-to-one message sending frequency: No limit for sending on the client; sending through the RESTful API is subject to the API frequency limit specified in the API documentation.Group message sending frequency: Up to 40 messages can be sent per second per group (regardless of the group type, and this limit applies to each group separately).
      Receiving frequency
      Android/iOS/Mac/Windows/iPad: No limit for one-to-one messages or group messagesWeb: Up to 1,000 messages/second (total of one-to-one messages and group messages) for SDK versions earlier than 2.11.2; no limit for the SDK on v2.11.2 or later.
      Size of a single file
      SDKs support a maximum file size of 100 MB for any single file to be sent.
      SDKs do not support creating and sending file messages.
      The IM SDK for web does not support creating and sending voice messages.
      Message history storage period
      The default configurations for different plans are as follows:
      Developer edition: 7 days, with no extension supported
      Standard edition: 7 days, with extension supported
      Premium edition: 30 days, with extension supported
      The extension of the historical message storage period is a value-added service.
      UserID
      Naming rule
      The maximum length of a user account is limited to 32 bytes. English letters or numbers are supported. Special characters are not allowed.
      User profile
      Custom field
      The keywords of custom fields must consist of English letters with a length no longer than 8 bytes. The length of the values of custom fields cannot exceed 500 bytes.
      UserSig
      Validity period
      User password. The signatures generated by the default API of the IM backend SDK expire after 180 days.
      Conversation management
      Number of recent contacts
      Each user can save up to 100 recent contacts by default. The Premium edition supports up to 500 recent contacts. The limits can be configured in the console.
      User relationship chain
      Friends and friend groups
      A single user can have up to 3,000 friends.
      The maximum number of pending friend requests supported is 100.
      The maximum number of friend lists supported is 32.
      The maximum length of a friend list name is 30 characters.
      The maximum length of friend remarks is 96 characters.
      Starting from v2.13.0, the IM SDK for web supports friend relationship chain.
      Blocklist
      A single user can add a maximum of 1,000 users to the blocklist.
      Group
      Number of groups
      This refers to the total number of existing groups of all group types per `SDKAppID`, excluding disbanded groups. If the limit is reached, unnecessary groups can be disbanded first before new groups are created. The limits are as follows:
      Developer edition: 100
      Standard or Premium edition: No limit
      Number of group members
      Audio-video group (AvChatRoom): No upper limit on the number of group members.
      
      For non-audio-video groups, the default configurations are as follows:
      Developer edition: 20 members/group
      Standard edition: 200 members/group, which can be extended to 2,000 members/group
      Premium edition: 2,000 members/group, which can be extended to 6,000 members/group
      Number of groups a user can join
      This refers to the total number of groups of all group types that a user can join. The limits are as follows:
      Developer edition: 50 groups/user
      Standard edition: 500 groups/user, which can be extended to 1,000 groups/user
      Premium edition: The limit can be extended to 3,000 groups/user
      Group profile
      The maximum length of the group name is 30 bytes.
      The maximum length of the group introduction is 240 bytes.
      The maximum length of the group announcement is 300 bytes.
      The maximum length of the group profile photo URL is 100 bytes.
      The maximum length of the group name card is 50 bytes.
      Custom group ID
      The custom group ID must be printable ASCII characters (0x20-0x7e) with maximum length limited to 48 bytes. It cannot begin with @TGS# so as to avoid confusion with the default group IDs assigned by IM.
      Group custom field
      Groups support up to 10 custom fields:
      The Key field is String type, with a maximum length of 16 bytes. Its name can contain only uppercase and lowercase letters, numbers, and underscores.
      The Value field is a user-defined buffer and can be binary data. The maximum Value length for groups is 512 bytes.
      Group member custom field
      Group Member supports up to 5 custom fields:
      The Key field is String type, with a maximum length of 16 bytes. Its name can contain only uppercase and lowercase letters, numbers, and underscores.
      The Value field is a user-defined buffer and can be binary data. The maximum Value length for Group Member is 64 bytes.
      Number of topics in a community
      Currently, a community supports up to 200 topics.
      
      Note
      This document lists only the RESTful APIs that have use limits. For a complete list of APIs, see RESTful APIs.

      General limits

      Limit Item
      Description
      Call frequency
      Up to 200 times/second: other RESTful APIs
      

      Account management

      API
      Description
      Importing multiple accounts
      Up to 100 user names can be imported at a time, and this API does not support directly importing nickname and profile photo information of accounts.
      Querying online status of accounts
      A single request can query the status of up to 500 users.
      

      One-to-one message

      API
      Description
      Sending one-to-one messages in batches
      A single request can send one-to-one messages to up to 500 users.
      

      Relationship chain management

      API
      Description
      Importing friends
      A single request can import up to 1,000 friends.
      

      Group management

      API
      Description
      Adding group members
      A maximum of 100 members can be added at a time.
      Deleting group members
      A single request can delete up to 500 members.
      Querying a user’s identity in the group
      A single request can query up to 500 accounts.
      Batch muting and unmuting
      A single request can mute/unmute up to 500 accounts.
      Sending ordinary messages in a group
      The default sending frequency of a single group is limited to 40 messages/second. If two messages sent within 5 minutes from the same sender have the same random value (Random parameter), the later message will be discarded as a duplicate message.
      Importing group messages
      A maximum of 20 messages can be imported by a single request. Messages must be imported in ascending order by timestamp. The timestamps of imported messages must be earlier than the current time and later than the group creation time. Otherwise, the import fails.
      Importing group members
      Audio-video groups (AVChatRoom) do not support importing members.Up to 300 members can be imported in one request. However, different group types have different group member limits. For more information, see Group Features.
      
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