Greetings!
In XMPP, using PubSub(1) (XEP-0060), it is possible to store posts as Atom Syndication(2) entries into XMPP(3).
There are several XMPP extensions that apply it, namely XEP-0227 (4) and XEP-0472 (5) which make node urn:xmpp:microblog:0 as a common choice to manage news for client accounts (e.g. blog@writefreely.org), yet a component account (e.g. pubsub.writefreely.org) may use all of its nodes for this purpose.
pubsub.writefreely.org/
|
|-- updates/
|-- Sombre
`-- Varied
|-- releases/
`-- events/
pubsub service/
|
|-- node/
|-- item
`-- item
|-- node/
`-- node/
A go library that can be utilized would be go-xmpp.
I have made a script that realizes viewing PubSub node items as Atom XML feeds over HTTP.
XEP-0060: Publish-Subscribe
RFC 4287: The Atom Syndication Format
Atom Over XMPP
XEP-0277: Microblogging over XMPP
XEP-0472: Pubsub Social Feed
go-xmpp
PubSub Over HTTP