Generate unique ID for URL

[Christian Heimes]

Am 14.11.2012 01:41, schrieb Richard Baron Penman:
> I found the MD5 and SHA hashes slow to calculate.
> The builtin hash is fast but I was concerned about collisions. What
> rate of collisions could I expect?

Seriously? It takes about 1-5msec to sha1() one MB of data on a modern
CPU, 1.5 on my box. The openssl variants of Python's hash code release
the GIL so you use the power of all cores.