Amazon SNS subscription filter policies

A subscription filter policy allows you to specify attribute names and assign a list of values to each attribute name. For more information, see Amazon SNS message filtering.

When Amazon SNS evaluates message attributes against the subscription filter policy, it ignores message attributes that aren't specified in the policy.

Important

AWS services such as IAM and Amazon SNS use a distributed computing model called eventual consistency. Additions or changes to a subscription filter policy require up to 15 minutes to fully take effect.

A subscription accepts a message under the following conditions:

• Each attribute name in a filter policy matches an attribute name assigned to the message.

• For each matching attribute name, at least one match exists between the following:

  • The values of the attribute name in the filter policy

  • The message attributes

Topics

• Example filter policies
• Filter policy constraints
• Attribute string value matching
• Attribute numeric value matching
• Attribute key matching
• AND/OR logic