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Fixed #34681 -- Optimized memcache_key_warnings().

This commit is contained in:
Adam Johnson 2023-06-27 08:11:09 +01:00 committed by Mariusz Felisiak
parent 6fbe5287ac
commit 1dbcf9a005
1 changed files with 9 additions and 7 deletions
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16
django/core/cache/backends/base.py vendored
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@ -6,6 +6,7 @@ from asgiref.sync import sync_to_async
from django.core.exceptions import ImproperlyConfigured
from django.utils.module_loading import import_string
from django.utils.regex_helper import _lazy_re_compile
class InvalidCacheBackendError(ImproperlyConfigured):
@ -388,16 +389,17 @@ class BaseCache:
pass
memcached_error_chars_re = _lazy_re_compile(r"[\x00-\x20\x7f]")
def memcache_key_warnings(key):
if len(key) > MEMCACHE_MAX_KEY_LENGTH:
yield (
"Cache key will cause errors if used with memcached: %r "
"(longer than %s)" % (key, MEMCACHE_MAX_KEY_LENGTH)
)
for char in key:
if ord(char) < 33 or ord(char) == 127:
yield (
"Cache key contains characters that will cause errors if "
"used with memcached: %r" % key
)
break
if memcached_error_chars_re.search(key):
yield (
"Cache key contains characters that will cause errors if used with "
f"memcached: {key!r}"
)