feat optimize storage configuration and environment variables

* add storage type compatibility validation table
* add enviroment variables check for storage
* modify storage init to get setting from confing.ini and env

lightrag/kg/redis_impl.py

@@ -3,6 +3,7 @@ from typing import Any, Union
 from tqdm.asyncio import tqdm as tqdm_async
 from dataclasses import dataclass
 import pipmaster as pm
+import configparser
 
 if not pm.is_installed("redis"):
     pm.install("redis")
@@ -14,10 +15,13 @@ from lightrag.base import BaseKVStorage
 import json
 
 
+config = configparser.ConfigParser()
+config.read("config.ini", "utf-8")
+
 @dataclass
 class RedisKVStorage(BaseKVStorage):
     def __post_init__(self):
-        redis_url = os.environ.get("REDIS_URI", "redis://localhost:6379")
+        redis_url = os.environ.get("REDIS_URI", config.get("redis", "uri", fallback="redis://localhost:6379"))
         self._redis = Redis.from_url(redis_url, decode_responses=True)
         logger.info(f"Use Redis as KV {self.namespace}")