GraphQL SpecLane E · APIs + AgentsFREE

GraphQL

GraphQL collapses N REST endpoints into 1 — one query goes out, multiple resolved field-values come back. The animation shows the outbound long-rect query chip followed by inbound chips of 3 distinct shapes (one per type class: scalars / objects / enums).

Animation

Engineering pitfalls

N+1 query problem in resolvers

Naive GraphQL resolvers fire one SQL query per field per row. 100 rows × 5 fields = 500 queries. Always use DataLoader-style batching.

Query depth and complexity attacks

An attacker can craft a deeply nested query that costs O(N^depth) to resolve. Set max-query-depth (typically 10) and per-field cost limits.

Schema introspection leaking PII type names

GraphQL exposes the entire schema by default. Disable introspection in production or expose only to authenticated admin clients.

References

Primary sources
  • GraphQL Foundation — GraphQL Specification (October 2021 working draft).
  • Apollo Studio — Production-ready GraphQL Best Practices.
  • Hasura Engineering — GraphQL N+1 Problem and Solutions.