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⚡️ Speed up function is_model_allowed_by_pattern by 1,026% #447

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⚡️ Speed up function is_model_allowed_by_pattern by 1,026% #447

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9 changes: 7 additions & 2 deletions litellm/proxy/auth/auth_checks.py
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,8 @@
from .auth_checks_organization import organization_role_based_access_check
from .auth_utils import get_model_from_request

_pattern_cache = {}

if TYPE_CHECKING:
from opentelemetry.trace import Span as _Span

Expand Down Expand Up @@ -1829,8 +1831,11 @@ def is_model_allowed_by_pattern(model: str, allowed_model_pattern: str) -> bool:
bool: True if model matches the pattern, False otherwise
"""
if "*" in allowed_model_pattern:
pattern = f"^{allowed_model_pattern.replace('*', '.*')}$"
return bool(re.match(pattern, model))
pattern = _pattern_cache.get(allowed_model_pattern)
if pattern is None:
pattern = re.compile(f"^{allowed_model_pattern.replace('*', '.*')}$")
_pattern_cache[allowed_model_pattern] = pattern
return bool(pattern.match(model))

return False

Expand Down