mozilla-services/android-sync — comment on commit 74cc70e4df5e8f9f9dfdd5d1c77fe26ec098a230
File:  line 0
By rnewman:

I suspect that we never access one of the two database fields from more than one thread at a time, but I'd rather be sure.

Could you make all three methods in SQLiteOpenHelperCache synchronized?

I think I would also prefer CachedSQLiteOpenHelper.