Merge pull request #33 from Yangruipis/master

fix: redis reconnection error

fastapi_limiter/depends.py

@@ -4,6 +4,7 @@
 from starlette.requests import Request
 from starlette.responses import Response
 from starlette.websockets import WebSocket
+import redis as pyredis
 
 from fastapi_limiter import FastAPILimiter
 
@@ -49,7 +50,13 @@ async def __call__(self, request: Request, response: Response):
         callback = self.callback or FastAPILimiter.http_callback
         rate_key = await identifier(request)
         key = f"{FastAPILimiter.prefix}:{rate_key}:{route_index}:{dep_index}"
-        pexpire = await self._check(key)
+        try:
+            pexpire = await self._check(key)
+        except pyredis.exceptions.NoScriptError:
+            FastAPILimiter.lua_sha = await FastAPILimiter.redis.script_load(
+                FastAPILimiter.lua_script
+            )
+            pexpire = await self._check(key)
         if pexpire != 0:
             return await callback(request, response, pexpire)