Q31: What is Query Depth Limiting and why is it crucial for security?
Because GraphQL allows circular relationship querying (e.g., user -> posts -> author -> posts...), malicious clients can send deeply nested queries designed to exhaust server memory and CPU, causing a Denial of Service (DoS). Depth limiting checks the query AST prior to execution and rejects documents exceeding a defined nesting depth threshold.
Key Takeaways
- Query depth limiting rejects deeply nested queries to prevent DoS attacks.
Knowledge Check
At what stage of request execution should Depth Limiting validation occur?