Data Loader

DataLoader and the N+1 Problem

Understand why naive GraphQL resolvers trigger the N+1 query problem and how Facebook's DataLoader batches and caches requests to fix it.

What Query Batching Strategies Reduce Database Round Trips?

Query batching combines what would be many individual database round trips into fewer, larger operations — such as a single multi-row INSERT, a batched IN clau…

GraphQL vs REST at Scale: How Do You Choose?

REST exposes fixed, resource-shaped endpoints that are simple to cache and operate at scale, while GraphQL exposes a single endpoint with a flexible query lang…

What Is the GraphQL N+1 Problem and How Do You Solve It?

The GraphQL N+1 problem happens when resolving a list field triggers one query to fetch the list plus one additional query per item to resolve a nested field,…