From 1fc86525647bb3918ab99ebdd371825330f8f264 Mon Sep 17 00:00:00 2001
From: Erosika <eri@plasticlabs.ai>
Date: Thu, 5 Mar 2026 12:36:39 -0500
Subject: [PATCH] fix: retry on RuntimeError for stale Redis connections (Fixes
 HONCHO-18H)

uvloop raises RuntimeError when a TCP transport is closed and redis-py's
health check PING hits the stale connection. redis-py's default retry
logic doesn't cover RuntimeError, so it propagated unhandled. Adding
RuntimeError to retry_on_error causes redis-py to reconnect instead.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/cache/client.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cache/client.py b/src/cache/client.py
index d4005fb1..9ee7f9b9 100644
--- a/src/cache/client.py
+++ b/src/cache/client.py
@@ -49,6 +49,7 @@ async def init_cache() -> None:
             cache.setup(
                 settings.CACHE.URL,
                 pickle_type=PicklerType.SQLALCHEMY,
+                retry_on_error=[RuntimeError],
             )
 
         except Exception as setup_err: