We are running Craft on a site that gets a decent level of traffic, thousands of hits per day. We are running craft caching to try and keep things quick. The caching tables have been growing significantly over the past few days and don't appear to be clearing out. These are the three tables and the row counts. 1+ million rows in two of them.
| craft_templatecaches | 34685 | | craft_templatecachecriteria | 1197874 | | craft_templatecacheelements | 1364424 |
Any ideas on why these tables would be growing so large and why they don't appear to be removing any old rows?