Variable: gnus-use-cache
gnus-use-cache is a customizable variable defined in gnus.el.gz.
Value
passive
Documentation
If nil, Gnus will ignore the article cache.
If passive, it will allow entering (and reading) articles
explicitly entered into the cache. If anything else, use the
cache to the full extent of the law.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/gnus.el.gz
(defcustom gnus-use-cache 'passive
"If nil, Gnus will ignore the article cache.
If `passive', it will allow entering (and reading) articles
explicitly entered into the cache. If anything else, use the
cache to the full extent of the law."
:group 'gnus-meta
:group 'gnus-cache
:type '(choice (const :tag "off" nil)
(const :tag "passive" passive)
(const :tag "active" t)))