001 Project structure

app/repositories/__init__.py

@@ -0,0 +1 @@
+"""Repository layer."""

app/repositories/cache/__init__.py

@@ -0,0 +1 @@
+"""Cache repositories."""

app/repositories/cache/redis_cache.py

@@ -0,0 +1,17 @@
+"""Redis cache repository skeleton."""
+
+from typing import Any
+
+
+class PriceCache:
+    async def get(self, key: str) -> Any | None:
+        _ = key
+        raise NotImplementedError("Redis repository implementation is added in task 004.")
+
+    async def set(self, key: str, value: Any, ttl: int) -> None:
+        _ = (key, value, ttl)
+        raise NotImplementedError("Redis repository implementation is added in task 004.")
+
+    async def invalidate(self, key: str) -> None:
+        _ = key
+        raise NotImplementedError("Redis repository implementation is added in task 004.")