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GraphQL APIs with Spring Boot · Lesson

Persisted Queries and Automatic Persisted Queries

Cut request payloads and improve performance by registering queries ahead of time. Learn how Automatic Persisted Queries (APQ) work and how to enable them in Spring Boot GraphQL.

The Cost of Sending Full Queries

Every GraphQL request normally carries the entire query string. Large queries mean larger payloads, more bandwidth, and repeated parsing and validation on the server.

Persisted queries reduce this overhead by sending a short hash instead.

What Is a Persisted Query?

A persisted query is a query string the server already knows, stored under a unique ID (usually a SHA-256 hash). Clients send the ID, and the server looks up the full query.

All lessons in this course

  1. Query Complexity Analysis
  2. Caching Strategies for GraphQL
  3. Monitoring and Tracing GraphQL
  4. Persisted Queries and Automatic Persisted Queries
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