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add sentinel guard so pkce-no-redis warning only fires once across hot-reloads

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This commit is contained in:
Ishaan Jaffer 2026-03-06 16:40:04 -08:00
parent 579078f468
commit 7ce09e124e
1 changed files with 14 additions and 9 deletions
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23
litellm/proxy/proxy_server.py
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@ -1494,6 +1494,8 @@ native_background_mode: List[
polling_cache_ttl: int = 3600 # Default 1 hour TTL for polling cache
user_custom_auth = None
user_custom_key_generate = None
# Sentinel: prevents PKCE-no-Redis advisory from re-logging on config hot-reload
_pkce_no_redis_warning_emitted: bool = False
user_custom_sso = None
user_custom_ui_sso_sign_in_handler = None
use_background_health_checks = None
@ -3030,15 +3032,18 @@ class ProxyConfig:
# all API-key lookups through Redis.
use_pkce = os.getenv("GENERIC_CLIENT_USE_PKCE", "false").lower() == "true"
if use_pkce and redis_usage_cache is None:
verbose_proxy_logger.warning(
"GENERIC_CLIENT_USE_PKCE=true but Redis is not configured for LiteLLM caching. "
"PKCE verifiers will not be shared across instances — callbacks may land on a "
"different pod than the login request and fail silently. "
"Configure Redis via the 'cache' section in your proxy config, "
"or enable sticky sessions for single-instance deployments. "
"Set PKCE_STRICT_CACHE_MISS=true to fail fast with a 401 on cache misses "
"instead of continuing without a code_verifier."
)
global _pkce_no_redis_warning_emitted
if not _pkce_no_redis_warning_emitted:
_pkce_no_redis_warning_emitted = True
verbose_proxy_logger.warning(
"GENERIC_CLIENT_USE_PKCE=true but Redis is not configured for LiteLLM caching. "
"PKCE verifiers will not be shared across instances — callbacks may land on a "
"different pod than the login request and fail silently. "
"Configure Redis via the 'cache' section in your proxy config, "
"or enable sticky sessions for single-instance deployments. "
"Set PKCE_STRICT_CACHE_MISS=true to fail fast with a 401 on cache misses "
"instead of continuing without a code_verifier."
)
### STORE MODEL IN DB ### feature flag for `/model/new`
store_model_in_db = general_settings.get("store_model_in_db", False)
if store_model_in_db is None: