GraphQL-Ruby includes a plain-Ruby parser, but a faster parser is available as a C extension. To use it, add the graphql-c_parser gem to your project, for example:
bundle add graphql-c_parser
When graphql-c_parser is required by your app, the C-based parser is installed as the default parser (as GraphQL.default_parser). Bundler requires the library automatically, but you can also require it manually:
require "graphql/c_parser"
This alternative parser is faster and uses less memory.
The library also adds GraphQL.scan_with_c and GraphQL.parse_with_c for calling the C-based parser directly.