Control Packs · REL-003 · v1.0.0
Dependency Rate and Load Protection
Protect a metered or fragile dependency from unbounded concurrency, retry amplification, and quota exhaustion.
Status: review · Review: not independent. This is design guidance; review status does not establish independent verification or compliance.
What this safeguard addresses
Bound concurrency and retries, apply backoff, respect provider limits, and fail safely when capacity is exhausted.
- Failure handling amplifies dependency loadRetries, fan-out, or concurrent work exhaust a provider quota or make an outage worse.
Versioned applicability rule
{
"all": [
{
"characteristic": "HIGH_COST_CONSUMPTION",
"equals": true
},
{
"characteristic": "EXTERNAL_DEPENDENCY",
"equals": true
}
]
}Decisions for the project owner
Leave a decision open when its value is unknown. Suggested values become confirmed only through an explicit user decision.
- Which concurrency, retry, and quota rules govern calls to the dependency?A generic retry loop cannot safely determine a dependency's capacity boundary.REL-003-Q1 · scope
Requirements for the coding agent
- REL-003-R1Enforce bounded concurrency, timeouts, retry budgets, backoff, quota handling, and safe degradation for external dependencies.
Tests and evidence to retain
- DEPENDENCY_LOAD_TESTExercise normal load, timeout, rate limit, retry budget, backoff, quota exhaustion, and degraded mode.
- configuration_or_policy
- implementation_location
- test_result
- telemetry_definition
Passing a published example shows that example's behavior. A coding agent's implementation report remains a claim until its evidence is independently checked.
Related guidance
- SC-5 · Denial-of-Service ProtectionNIST_SP_800_53_5_2_0 · partially addressesBounded concurrency, retry budgets, and quota handling reduce overload amplification for the dependency boundary; they are not a complete denial-of-service control.
- SC-6 · Resource AvailabilityNIST_SP_800_53_5_2_0 · partially addressesTimeouts, backoff, and bounded load protect a defined resource boundary; they do not establish overall availability.
- SI-4 · System MonitoringNIST_SP_800_53_5_2_0 · partially addressesDependency load events support focused monitoring of retries and quotas; they do not cover system monitoring broadly.
Mappings indicate contextual relevance or partial support. They do not establish equivalence, certification, government endorsement, or complete framework implementation.
- Amazon Web Services Builders' Library — Timeouts, retries, and backoff with jitterGUIDANCE_RELIABILITY
- National Institute of Standards and Technology — Artificial Intelligence Risk Management FrameworkGUIDANCE_AUTOMATION
- National Institute of Standards and Technology — Security and Privacy Controls for Information Systems and OrganizationsGUIDANCE_NIST_SP_800_53_5_2_0