Infrastructure · Software component

Gradual Rollback Controller

Software componentInfrastructureInfrastructurearc:GradualRollbackController

A rollback controller that reverses a progressive rollout stepwise, reducing the new version's traffic share and checking stability at each step.

Responsibility. Performs a staged traffic reversion to the previous version.

Also known as: Controlled rollback

Variant of Version Rollback Controller abstract

When to choose. Choose for moderate quality degradation, performance issues or non-critical bugs.

Direct neighbourhood (hover for relationship types)

Relationships

reads dependency

Time-Series Metrics Store Ref8.08

alternative to variability

Immediate Rollback Controller Ref8.08

Design guidance

SHOULD accelerate the rollback if stability is lost at any step.

Quantitative guidance

As stated by the sources; verify before use.

New-version traffic 50% -> 25% -> 10% -> 0% with 10-minute monitoring per step (Ref8.08).

Classification

Patterns: Reverse progressive rollout
Quality attributes: Reliability (ISO/IEC 25010 | NIST AI RMF: valid and reliable)
Risks mitigated: Disruption from abrupt switches for minor issues

Sources

Ref8.08: "Model Updates and Maintenance Procedures," unpublished reference note (08-Model-Updates-Maintenance-Procedures.md), Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam supplementary materials, 2026. unpublished note