safe log file - use it to safely store some records.
a simple triple index: each A has a set of (B,C)*, so that a pair (A,B) identifies a unique C.
a simple triple index: each A has a set of (B,C)*, so that a pair (A,B) identifies a unique C. This is often useful in applications to index data/configuration
NOTE this is not mt-safe
safe log file - use it to safely store some records.
NOTE that this in fact is just a playground and this is nowhere near safe... it's just a bunch of tests...
will spawn a background thread that will read records from the file, to make sure they're there... unless the OS is messing with us
Note that it will open/create automatically, when object is created