[Cronometer-development] speed

[Aaron D. <ada...@po...>]

Did a little snooping on the slow speed -- It's definately just the 
food loading. It gets worse and worse as you add more and more foods to 
the daily list. It has to load each one from the database every time it 
is needed. Adding a food to the day forces all foods in that day to be 
reloaded from scratch.

We could cache loaded foods in a WeakHashMap, and always check it 
before loading. Just need to make sure it is *always* checked first, so 
that read/write stale cache conflicts don't occur. What do you think?