#GraphQL
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The N+1 problem in GraphQL: DataLoader and the batching fix.
Every GraphQL resolver that fetches related data naively creates N+1 database queries. DataLoader solves this with batching and caching within a request.
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GraphQL vs REST: the actual tradeoff, not the hype.
A realistic comparison of GraphQL and REST covering over-fetching, type safety, tooling, caching, and when each approach wins.