Hi Richard, > The way the cache is refreshed has changed so much recently that I may > be confusing a historical regime with the present one.
Yes, the arms race does make it tricky to keep up. I only dig when something stops working. > My understanding is that the 30 day limit refers to how long entries > remain in the cache. Programmes older than 30 days are discarded. It currently controls how many whole-weeks back we go in retrieving schedules like https://www.bbc.co.uk/schedules/p00fzl6n/2017/w$w for BBC One, where $w is the week number of the year, e.g. today is in week 45. Entries in the cache are purged by get_links() if they don't have an "expires" time, or it's before "now", or its "timeadded" is more than 30 days ago. That 30 days is fixed and defined as $min_timeadded. > The schedules only exist for this week and last week, so it is not > possible to add programmes more than 2 weeks old. I've just got all those for {01..45} and they're all available. I think it's just get_iplayer doesn't want to slow things down by getting the older ones, even though they obviously contain programmes that could still be available, e.g. _This Week_ is typically online for a year. (They can't give it away!) This suggests if one comes back from a three-month cruise that overriding the 30-day limit could be useful. > The v3.00 release notes > https://github.com/get-iplayer/get_iplayer/wiki/release300to309#release300 > state, > The slower updates are compensated for by the fact that the cache is > now updated only once per calendar week (Mon-Sun). The cache will be > updated the first time get_iplayer runs during the week. > > My cache still seems to refresh every 4 hours, so I may have got it > completely wrong. I think it's changed again since 3.00. The --expiry option defaults to four hours now; if the cache is older than that then it is refreshed. (It's also refreshed if explicitly requested, or it doesn't exist.) I always specify a very high --expiry option because I explicit refresh the cache once each morning, without waiting for it to finish, and then don't want it delay any of my later runs of get_iplayer during the day. -- Cheers, Ralph. https://plus.google.com/+RalphCorderoy _______________________________________________ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
