07-16-2011 10:27 AM - edited 07-16-2011 10:45 AM
if your having texture issues like not loading properly or sculpts look a little deformed to normal (not bake fail where your av is a cloud puff) it can fix those in some viewers possibily all clearing your cache also clears your inventory cache which may help if you have missing inventory items
edit: the cache is a location in your computer where textures that have rezzed go to so they rezz quicker unless you are experiencing problems you shouldn't need to clear your cache as there is no great benefit to it
07-16-2011 10:28 AM
The information in cache can become corrupted, usually because of memory leaks. Corrupted asset data can cause textures that won't ever display properly, or body parts or clothing items that don't appear correctly. It can even cause the viewer to crash. Clearing cache dumps the potentially bad data, and starts fresh.
Cache allows your computer to locally store certain asset data, such as the textures on your avatar or on the walls of the room you are in. Locally cached textures are faster to access than assets that have to come from the asset servers. But you have a limited amount of cache space on your computer, and could never cache everything for every place that you go. It changes too much, so less-frequently used data or obsolete data is always being replaced by newer data.
In a perfect situation, once a texture is cached, if you keep needing it, you shouldn't ever have to fecth it again from the asset servers. LL's code isn't written that well, and as a result it frequently dumps the old cached version and gets it all over again, causing textures that you recently saw sharp and clear to be fuzzy for a moment, then get sharp again. All that re-writing makes for more chances for something to go wrong, and get corrupted.
07-16-2011 02:41 PM
If you start seeing more and more people with badly adjusted prim clothes and attachments, such as bald heads poking through prim hair, it is also time to clear your cache. Alas, there is no guarantee that other people will see your avatar correctly. If you look good on your own screen, you might look completely ridiculous to someone else who has not cleared his cache in months.