Did you look at the JSON docs?

"This module is a thin wrapper for JSON::XS-compatible modules with a few additional features. All the backend modules convert a Perl data structure to a JSON text and vice versa. This module uses JSON::XS by default, and when JSON::XS is not available, falls back on JSON::PP, which is in the Perl core since 5.14. If JSON::PP is not available either, this module then falls back on JSON::backportPP (which is actually JSON::PP in a different .pm file) bundled in the same distribution as this module."

In reply to Re^2: How do I tell if my code is using JSON::PP or JSON::XS? by marto
in thread How do I tell if my code is using JSON::PP or JSON::XS? by Cody Fendant

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