I want to use a squid to speed up a site with authentication, (user have to login/password on the application first before getting any information).
The slow part of the site are namespaces provide by a rest api: /api/1/ns_xxx
Does squid allow to serve pages through/after an authentication ?
Squid can totally manage authentication. See the FAQ from squid. The proper configuration is login=PASS at the cache_peer level