opentelemetry.io/content/en/docs/demo/feature-flags.md

title	aliases	cSpell:ignore
Feature Flags	feature_flags services/feature-flag services/featureflagservice	flagd loadgenerator OLJCESPC7Z

The demo provides several feature flags that you can use to simulate different scenarios. These flags are managed by flagd, a simple feature flag service that supports OpenFeature. Flag values are stored in the demo.flagd.json file. To enable a flag, change the defaultVariant value in the config file for a given flag to "on".

Feature Flag	Service(s)	Description
adServiceFailure	Ad Service	Generate an error for GetAds 1/10th of the time
adServiceManualGc	Ad Service	Trigger full manual garbage collections in the ad service
adServiceHighCpu	Ad Service	Trigger high cpu load in the ad service. If you want to demo cpu throttling, set cpu resource limits
cartServiceFailure	Cart Service	Generate an error for EmptyCart 1/10th of the time
productCatalogFailure	Product Catalog	Generate an error for GetProduct requests with product id: OLJCESPC7Z
recommendationServiceCacheFailure	Recommendation	Create a memory leak due to an exponentially growing cache. 1.4x growth, 50% of requests trigger growth.
paymentServiceFailure	Payment Service	Generate an error when calling the charge method.
paymentServiceUnreachable	Checkout Service	Use a bad address when calling the PaymentService to make it seem like the PaymentService is unavailable.
loadgeneratorFloodHomepage	Loadgenerator	Start flooding the homepage with a huge amount of requests, configurable by changing flagd JSON on state.

Feature Flag Architecture

Please see the flagd documentation for more information on how flagd works, and the OpenFeature website for more information on how OpenFeature works, along with documentation for the OpenFeature API.