# Product Catalog Failure

### Failure scenario

This failure occurs when the `productCatalogFailure` flag is enabled in the Flagd configuration (either through the Kubernetes ConfigMap or the Flagd UI).

When activated, this flag causes `GetProduct` requests for the specific product ID `OLJCESPC7Z` to fail with 100% consistency.

## Root Cause Analysis by Coroot

### How it works

#### 1. Anomaly detection

Coroot's RCA started from an anomaly in errors in the `frontend-proxy` service. No other input from a user was required, the system automatically detected the issue.

#### 2. eBPF-Based metrics correlation

The first step used eBPF-based metrics to identify the problematic service. It detected errors in the `frontend-proxy` service, which correlated with issues in the `frontend` service, then `checkout`, and finally the `product-catalog`. This step worked even without OpenTelemetry instrumentation.

#### 3. Traces analysis

The previous step found the failing service but didn't show that the issue was caused by a feature flag. Trace analysis revealed this, and Coroot found the feature flag using tracing attributes.

### Results

Detection of the problematic service:

Successfully identified the `product-catalog` service as the source of failures

Immediate fixes provided:

Suggested disabling the feature flag as a precise, actionable solution

Additional details:

The specific product ID was not identified in the analysis

### LLM Usage Details

Model: Anthropic Claude Sonnet 4 (claude-sonnet-4-20250514)

Token usage: 20,734 input tokens • 634 output tokens

Estimated cost: ~$0.07 USD

Based on $3 per 1M input tokens, $15 per 1M output tokens