note that browsers' cache has recently been changed so that it's isolated for each origin - if you visit a.com which loads jQuery, it doesn't speed up loading j

note that browsers' cache has recently been changed so that it's isolated for each origin - if you visit a.com which loads jQuery, it doesn't speed up loading jQuery on b.com at all https://developer.mozilla.org/en-US/docs/Web/Privacy/State_Partitioning#network_partitioning https://developer.mozilla.org/en-US/docs/Web/Privacy/State_P...