absinthe-resolvers

Implement Absinthe GraphQL resolvers with Dataloader batching and error handling.

187|20|Updated Nov 20, 2025

Search Tags:#graphql #elixir #dataloader #resolver #absinthe #batched

Ready to run

npx skills add https://github.com/TheBushidoCollective/han --skill absinthe-resolvers

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: absinthe-resolvers
Source: https://github.com/TheBushidoCollective/han/tree/main/jutsu/jutsu-absinthe-graphql/skills/absinthe-resolvers
Command: npx skills add https://github.com/TheBushidoCollective/han --skill absinthe-resolvers

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill guides implementing Absinthe GraphQL resolvers with patterns, dataloader integration, batching, and error handling.

Core Features & Use Cases

Basic resolvers: List, get, and create patterns in Absinthe.
Dataloader integration: Efficient batching to avoid N+1 queries.
Middleware & error handling: Centralized error mapping.

Quick Start

Implement a simple resolver module with a list_users function and a resolver that uses Dataloader for posts per user.

Frequently Asked Questions about absinthe-resolvers

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I avoid N+1 queries in Absinthe GraphQL resolvers?▼

N+1 queries occur when resolvers fetch data individually for each item. Absinthe resolvers prevent this by integrating Dataloader for batched queries, which groups requests and fetches all related data in a single database call, eliminating redundant queries.

What's the best way to structure resolvers in an Elixir GraphQL server?▼

Efficient Absinthe resolvers delegate business logic to context modules rather than embedding it directly. This thin-resolver pattern keeps resolvers focused on data mapping, improves testability, and centralizes domain logic for easier maintenance and error handling.

Can I use middleware for authorization in Absinthe GraphQL resolvers?▼

Yes. Absinthe middleware provides centralized authorization checks before resolvers execute. Middleware intercepts requests, validates authentication context, enforces permissions, and handles errors consistently across all resolver operations like list, get, and create.

How do I implement batching to handle multiple resolver requests efficiently?▼

Batching in Absinthe uses Dataloader to collect multiple resolver requests and execute them as a single batch operation. This reduces database round trips, improves performance under concurrent load, and is especially effective for resolving relationships like posts per user.

What error handling patterns should I follow in Absinthe resolvers?▼

Absinthe resolvers should implement robust error handling with centralized error mapping through middleware. This approach captures resolver failures, translates domain errors into consistent GraphQL responses, and prevents stack traces from leaking to clients.