The HTTP QUERY method (RFC 10008) is here — and caching it correctly is harder than it looks

Short summary

HTTP QUERY (RFC 10008) adds a new request method combining GET semantics (safe, idempotent, cacheable) with POST's body support — solving a decade-old API design gap for complex reads like search filters. The critical challenge: cache keys must incorporate request bodies, and incorrect JSON normalization can leak data between clients. The http-queryable library provides correct caching for Express, Fastify, and browsers.

• •RFC 10008 introduces HTTP QUERY, a method that pairs GET semantics (safe, idempotent, cacheable) with body support for complex read operations
• •Caching is non-trivial: bodies must become part of cache keys, and JSON normalization errors can cause dangerous data leaks between clients
• •http-queryable library handles caching correctly across Express, Fastify, and browser environments

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