feat(redis): add subscriber for pub/sub mode

app/service/subscriber.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+from collections.abc import Awaitable, Callable
+from typing import Any
+
+from app.dependencies.database import get_redis_pubsub
+
+
+class RedisSubscriber:
+    def __init__(self, channel: str):
+        self.pubsub = get_redis_pubsub(channel)
+        self.handlers: dict[str, list[Callable[[str, str], Awaitable[Any]]]] = {}
+
+    async def listen(self):
+        async for message in self.pubsub.listen():
+            if message is not None and message["type"] == "message":
+                method = self.handlers.get(message["channel"])
+                if method:
+                    for handler in method:
+                        await handler(message["channel"], message["data"])