21 lines
553 B
Python
21 lines
553 B
Python
"""
|
|
This module provides a KEY_FUNCTION suitable for use with a memcache backend
|
|
so that we can cache any keys, not just ones that memcache would ordinarily accept
|
|
"""
|
|
from django.utils.encoding import smart_str
|
|
import hashlib
|
|
import urllib
|
|
|
|
def fasthash(string):
|
|
m = hashlib.new("md4")
|
|
m.update(string)
|
|
return m.hexdigest()
|
|
|
|
def safe_key(key, key_prefix, version):
|
|
safe_key = urllib.quote_plus(smart_str(key))
|
|
|
|
if len(safe_key) > 250:
|
|
safe_key = fasthash(safe_key)
|
|
|
|
return ":".join([key_prefix, str(version), safe_key])
|