Explain the implications of GraphQL over HTTP (GET vs POST).

GraphQL typically uses POST to accommodate massive queries and variables, but GET is preferred for cacheability.

By default, the query string and variables are sent in the body of a POST request. However, POST requests are not cached by CDNs or browsers. Sending queries via GET (with the query and variables URL-encoded) allows aggressive edge caching, but risks hitting URL length limits on massive operations.