Unikátní identifikator (ID)
MD5 / SHA1 / SHA256
$$2^{256} = 1.157920892\cdot10^{77}$$
vs.
$$10^{78} - 10^{100}$$
metadata
=
PostgreSQL
Cesta
e3b0c44298fc1c14...a495991b7852b855
⇩
//storage/share/e3/b0/c4/e3b0c44298...1b7852b855
Cesta
/00-ff/00-ff/00-ff/
⇩
256x256x256
= 16,777,216
