Shopify Advanced Troubleshooting

Overview

Deep debugging for complex Shopify API issues: cost analysis with debug headers, webhook delivery inspection, GraphQL query introspection, and systematic isolation of intermittent failures.

Prerequisites

• Access to Shopify admin and Partner Dashboard
• Familiarity with GraphQL and HTTP debugging
• curl and jq available

Instructions

Step 1: GraphQL Cost Analysis

When queries THROTTLE unexpectedly, use the cost debug header by adding Shopify-GraphQL-Cost-Debug: 1 to your request. The response extensions.cost reveals why a query is expensive.

Key: requestedQueryCost is first multiplied through nested connections. 50 products * 20 variants * (1 + 5 metafields) = high cost even if actual data is small.