These are the extended parameters
of a feed. None of them is mandatory; you might just skip
them.
Some are default
parameters used when messages are created.
| Field name |
Purpose |
Constraints |
Example(s) |
| Link |
A link a user may click when the feed header is
displayed by a feed reader. E.g. a link to a page
describing the feed in more detail, a
link to the
home page of your site, or a link to the feed itself. |
Optional. Max. length: 255 characters*.
Must be a valid URL. |
http://www.yourdomain.tld.en http://www.mydomain.tld/en/feeds |
| Copyright |
Copyright notice of the feed. |
Optional Max. length: 255 characters*. |
Copyright (C) MyCompany Copyright {copy}
{year}, {company} |
| Publication time |
Publication date and time of the feed.
Automatically updated when new feeds are added. |
Read-only. Format: "yyyy-mm-dd
hh:MM:ss". |
2010-11-01 |
| Time-to-live |
The time in minutes a feed reader may
locally cache this
feed (incl. messages). After this time it should
re-read it. |
Optional. Numeric.
Max. length: 5 digits.
Default: 60 (= 1 hour) |
60 |
| Maximum age |
Default difference in seconds between the start
and the end publishing date / time of a message. |
Optional. Numeric.
Max. length: 10 digits.
Default: 604800 seconds = 7 days. |
604800 |
| |
* field may contain variable references |