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0+ curated questions with the same answer shape every time: quick recap, deep dive, pitfalls, and follow-ups. Coverage includes .
GraphQL Ruby interview questions test whether you understand not just the syntax but the production challenges. This module covers the graphql-ruby gem's object types, query type, and mutation type structure, resolver methods and how context flows through, the N+1 problem specific to GraphQL resolvers (every field resolver triggers its own query), solving N+1 with graphql-batch and the dataloader pattern, argument validation and custom scalars, Relay-spec connections for pagination, subscriptions over ActionCable (and why WebSocket scaling is different from HTTP), authentication via context[:current_user], introspection security (disabling in production), persisted queries, and the REST vs GraphQL decision framework.
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