From 055e3d7f429fca9f2fb406f7b923342a15edfbfe Mon Sep 17 00:00:00 2001
From: AnthonyDuan <superories@gmail.com>
Date: Sun, 23 Nov 2025 12:39:02 +0800
Subject: [PATCH] fix: fallback to memory limiter and SimpleCache/session
 filesystem when Redis unavailable

---
 app.py | 39 ++++++++++++++++-----------------------
 1 file changed, 16 insertions(+), 23 deletions(-)

diff --git a/app.py b/app.py
index b11322e..0f919ba 100644
--- a/app.py
+++ b/app.py
@@ -53,37 +53,30 @@ def get_remote_address() -> str:
 limiter = Limiter(
     get_remote_address,
     app=app,
-    # default_limits=[],
-    # storage_uri="memory://",
-    # Redis
-    storage_uri=os.environ.get("REDIS_URI", "redis://127.0.0.1:6379/"),
-    # Redis cluster
-    # storage_uri="redis+cluster://localhost:7000,localhost:7001,localhost:70002",
-    # Memcached
-    # storage_uri="memcached://localhost:11211",
-    # Memcached Cluster
-    # storage_uri="memcached://localhost:11211,localhost:11212,localhost:11213",
-    # MongoDB
-    # storage_uri="mongodb://localhost:27017",
-    # Etcd
-    # storage_uri="etcd://localhost:2379",
-    strategy="fixed-window", # or "moving-window"
+    strategy="fixed-window",
+    storage_uri=os.environ.get("REDIS_URI") or "memory://",
 )
 
 client = MongoClient(host=os.environ.get("TAIKO_WEB_MONGO_HOST") or take_config('MONGO', required=True)['host'])
 basedir = take_config('BASEDIR') or '/'
 
 app.secret_key = take_config('SECRET_KEY') or 'change-me'
-app.config['SESSION_TYPE'] = 'redis'
 redis_config = take_config('REDIS', required=True)
 redis_config['CACHE_REDIS_HOST'] = os.environ.get("TAIKO_WEB_REDIS_HOST") or redis_config['CACHE_REDIS_HOST']
-app.config['SESSION_REDIS'] = Redis(
-    host=redis_config['CACHE_REDIS_HOST'],
-    port=redis_config['CACHE_REDIS_PORT'],
-    password=redis_config['CACHE_REDIS_PASSWORD'],
-    db=redis_config['CACHE_REDIS_DB']
-)
-app.cache = Cache(app, config=redis_config)
+try:
+    _r = Redis(
+        host=redis_config['CACHE_REDIS_HOST'],
+        port=redis_config['CACHE_REDIS_PORT'],
+        password=redis_config['CACHE_REDIS_PASSWORD'],
+        db=redis_config['CACHE_REDIS_DB']
+    )
+    _r.ping()
+    app.config['SESSION_TYPE'] = 'redis'
+    app.config['SESSION_REDIS'] = _r
+    app.cache = Cache(app, config=redis_config)
+except Exception:
+    app.config['SESSION_TYPE'] = 'filesystem'
+    app.cache = Cache(app, config={'CACHE_TYPE': 'SimpleCache'})
 sess = Session()
 sess.init_app(app)
 #csrf = CSRFProtect(app)