Save Time and Stop Writing GraphQL Resolvers

This article discusses an alternative way to build GraphQL Data APIs without the difficulties of manually-built APIs. It presents a custom-built GraphQL API that represents a digital media store connected to the Chinook database, which includes tables for artists, albums, and tracks. The main focus is on resolvers, which are functions that specify how to process a specific GraphQL operation and turn it into data. The article highlights the challenges of writing GraphQL resolvers manually, such as boilerplate code, complexity, performance issues, and maintenance requirements. It also mentions the need for ensuring API security and scalability. To address these challenges, Hasura is introduced as a solution that automatically generates SQL queries from GraphQL operations without requiring manual implementation of resolvers. Hasura is a GraphQL Engine that makes data instantly accessible over a real-time GraphQL API by connecting to your data source and generating the necessary schema, queries, mutations, subscriptions, CRUD operations, and authorization rules. It can also merge remote GraphQL schemas and provide a unified GraphQL API through Remote Schemas. Additional ways of adding custom business logic include Actions and Event Triggers. Actions allow for extending Hasura's schema with custom business logic using custom queries and mutations, while Event Triggers reliably capture events on specified tables and invoke HTTP webhooks to carry out any custom logic.