Modules - AWS RTB Fabric
Built-in modulesConfiguring modules

Modules

Modules are configurable components that process RTB traffic flowing through your links. You can use modules to implement rate limiting, filtering, error handling, and other traffic management capabilities. RTB Fabric provides built-in modules that are available at no additional charge, and you can configure them using the RTB Fabric API.

On a link details page, choose the Modules tab to view information about modules that have been configured for the current link. RTB Fabric only supports viewing modules in the console. You can configure modules with the RTB Fabric API using the UpdateLinkModuleFlow operation.

Built-in modules

RTB Fabric provides the following built-in modules that you can configure for your links:

  • QPS rate limiter – Controls the rate of requests flowing through the link by limiting queries per second (QPS). This module helps protect downstream systems from traffic spikes and ensures consistent performance under varying load conditions.

  • OpenRTB filter – Filters RTB requests and responses based on OpenRTB protocol specifications. This module validates message formats, removes invalid fields, and ensures compliance with OpenRTB standards.

  • Error masker – Masks sensitive information in error responses to prevent data leakage while maintaining debugging capabilities. This module helps protect confidential data when errors occur during RTB processing.

All built-in modules are available at no additional charge. You can configure multiple modules on a single link, and they will be applied in the order you specify during configuration.

Configuring modules

Module configuration is only available through the RTB Fabric API. You cannot configure modules using the RTB Fabric console. Use the UpdateLinkModuleFlow API operation to add, modify, or remove modules from your links. This operation allows you to define the processing flow for RTB traffic by specifying which modules to apply, their configuration parameters, and the order in which they execute.

Example: Adding a QPS rate limiter module

The following example shows how to add a QPS rate limiter module to a link using the AWS Command Line Interface (AWS CLI).

# Add a QPS rate limiter module to a link
aws rtbfabric update-link-module-flow \
    --gateway-id rtb-gw-source123 \
    --link-id link-abc456def \
    --client-token "unique-update-token-789" \
    --modules '[
        {
            "name": "rate-limiter-module",
            "version": "1.0.0",
            "dependsOn": [],
            "moduleParameters": {
                "rateLimiter": {
                    "tps": 1000.0
                }
            }
        }
    ]'

For detailed information about module configuration parameters and API usage, see the AWS RTB Fabric API Reference.