[nominatim-web] Flush redis cache on expire

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit bcae04d953fba9e6a9e11bbc70eaa241625e28de
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Sat Apr 10 21:25:54 2021 +0200

    Flush redis cache on expire

 app/main.py | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/app/main.py b/app/main.py
index 90bb33b..7aefd97 100644
--- a/app/main.py
+++ b/app/main.py
@@ -156,4 +156,6 @@ def expire():
         reverse = cur.rowcount
         postgres.commit()
 
+    redis_conn.flushall()
+
     return {"search": search, "reverse": reverse}