gnus: Article Backlog
3.15 Article Backlog
====================
If you have a slow connection, but the idea of using caching seems
unappealing to you (and it is, really), you can help the situation some
by switching on the “backlog”. This is where Gnus will buffer already
read articles so that it doesn’t have to re-fetch articles you’ve
already read. This only helps if you are in the habit of re-selecting
articles you’ve recently read, of course. If you never do that, turning
the backlog on will slow Gnus down a little bit, and increase memory
usage some.
If you set ‘gnus-keep-backlog’ to a number N, Gnus will store at most
N old articles in a buffer for later re-fetching. If this variable is
non-‘nil’ and is not a number, Gnus will store _all_ read articles,
which means that your Emacs will grow without bound before exploding and
taking your machine down with you. I put that in there just to keep
y’all on your toes.
The default value is 20.
Info Catalog
gnus: Sticky Articles
gnus: Summary Buffer
gnus: Saving Articles