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With enable_redis_auth_cache and multiple replicas, /key/update and
/key/delete delete the Redis auth blob and the handling pod's in-memory
entry, but two read-path writers re-published the stale blob from any other
replica's per-pod memory back to Redis with a fresh 60s TTL on every
request: the post-auth re-cache in user_api_key_auth and the spend writeback
in update_cache. Replicas whose in-memory entries expired then re-primed
themselves from the poisoned Redis entry, so key limit and access changes
never took effect fleet-wide while traffic continued, and a deleted key kept
authenticating.
The auth object is now written only by the DB-load paths
(IdentityStore._resolve_key, get_key_object): the post-auth re-cache is
removed outright (even a local-only write could race an invalidation and
resurrect a revoked key on this worker) and spend tracking no longer writes
the auth object back at all; spend is tracked through the spend🔑*
counters. The remaining spend writebacks for user, team, end-user, and tag
objects become local-only so they cannot republish stale management objects
either, with one deliberate exception: the proxy-wide
{litellm_proxy_admin_name}:spend scalar keeps its shared Redis write because
the global max_budget check reads it between authoritative DB reloads, and
it carries no limits or permissions so sharing it cannot resurrect an
invalidated auth blob.
DualCache's redis-to-memory read backfill also ignored default_in_memory_ttl,
pinning backfilled entries for InMemoryCache's 600s default instead of the
configured 60s auth TTL; the backfill now injects the configured default like
every write path already does, so a replica primed from Redis converges
within the auth cache TTL as well.
Consolidates the sibling stale-auth-recache branch; the delete-propagation
case is the duplicate ticket LIT-4350.
Resolves LIT-4219
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| .. | ||
| test_admin_viewer_handler_access.py | ||
| test_auth_checks.py | ||
| test_auth_exception_handler.py | ||
| test_auth_hot_path_network_requests.py | ||
| test_auth_utils.py | ||
| test_banned_params_extra_body.py | ||
| test_cli_auth.py | ||
| test_custom_auth_end_user_budget.py | ||
| test_handle_jwt.py | ||
| test_info_routes.py | ||
| test_litellm_license.py | ||
| test_login_utils.py | ||
| test_mcp_ip_filtering.py | ||
| test_model_checks.py | ||
| test_model_checks_fallbacks.py | ||
| test_multi_budget_windows.py | ||
| test_network.py | ||
| test_oauth2_proxy_hook.py | ||
| test_object_permission_loading.py | ||
| test_onboarding.py | ||
| test_organization_budget_enforcement.py | ||
| test_password_hashing.py | ||
| test_resolvers_exceptions.py | ||
| test_resolvers_models.py | ||
| test_resolvers_seam.py | ||
| test_resolvers_store.py | ||
| test_route_checks.py | ||
| test_router_override_fallback_auth.py | ||
| test_team_member_budget.py | ||
| test_unmapped_model_budget_enforcement.py | ||
| test_user_api_key_auth.py | ||