From d90f3d558ed7fd38df4912309b7803ca6641f475 Mon Sep 17 00:00:00 2001
From: Harshit Jain <48647625+Harshit28j@users.noreply.github.com>
Date: Sat, 14 Feb 2026 08:46:07 +0530
Subject: [PATCH] Update litellm/proxy/utils.py

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
---
 litellm/proxy/utils.py | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/litellm/proxy/utils.py b/litellm/proxy/utils.py
index 4084284f7d0..f7e32869a23 100644
--- a/litellm/proxy/utils.py
+++ b/litellm/proxy/utils.py
@@ -2075,11 +2075,8 @@ async def _lookup_deprecated_key(
                 now_ts + _DEPRECATED_KEY_CACHE_TTL_SECONDS,
             )
             return deprecated_row.active_token_id
-        # Cache negative result to avoid repeated DB lookups for invalid tokens
-        _deprecated_key_cache[hashed_token] = (
-            None,
-            now_ts + _DEPRECATED_KEY_CACHE_TTL_SECONDS,
-        )
+        # Only cache positive results; negative lookups are fast on indexed columns
+        # and caching them risks evicting real deprecated key entries.
     except Exception as e:
         verbose_proxy_logger.debug("Deprecated key lookup skipped: %s", e)