Thanks, everyone, it's really helpful David Xiao
On Sat, Jul 14, 2012 at 7:12 AM, Anthony <[email protected]> wrote: > Right, you are using a ram cache, so you would have to explicitly >> invalidate the cached items if you want to update them. I would not rely on >> the time_expire to handle that for you, unless you are really not too >> concerned about it. > > > To be clear, the cached value will reliably get updated whenever the time > since the previous save exceeds the current value of time_expire, so you > can rely on time_expire to update based on the interval it specifies. > Nevertheless, there may be times you want to update the cached value based > on something other than the time that has expired since the last update. > That is possible as well, though a separate issue. > > Anthony >

