Reorganize env config sections, add data store config to env file.

• Add namespace prefix config option
• Make AGE graph name optional
• Update env variable requirements
• Add comments for deprecated options

lightrag/kg/age_impl.py

@@ -75,8 +75,8 @@ class AGEStorage(BaseGraphStorage):
             .replace("'", "\\'")
         )
         HOST = os.environ["AGE_POSTGRES_HOST"].replace("\\", "\\\\").replace("'", "\\'")
-        PORT = int(os.environ["AGE_POSTGRES_PORT"])
-        self.graph_name = os.environ["AGE_GRAPH_NAME"]
+        PORT = os.environ.get("AGE_POSTGRES_PORT", "8529")
+        self.graph_name = namespace or os.environ.get("AGE_GRAPH_NAME", "lightrag")
 
         connection_string = f"dbname='{DB}' user='{USER}' password='{PASSWORD}' host='{HOST}' port={PORT}"
 

lightrag/lightrag.py

@@ -107,10 +107,13 @@ STORAGE_ENV_REQUIREMENTS = {
         "AGE_POSTGRES_DB",
         "AGE_POSTGRES_USER",
         "AGE_POSTGRES_PASSWORD",
-        "AGE_GRAPH_NAME",
     ],
     "GremlinStorage": ["GREMLIN_HOST", "GREMLIN_PORT", "GREMLIN_GRAPH"],
-    "PGGraphStorage": ["POSTGRES_USER", "POSTGRES_PASSWORD", "POSTGRES_DATABASE"],
+    "PGGraphStorage": [
+        "POSTGRES_USER",
+        "POSTGRES_PASSWORD",
+        "POSTGRES_DATABASE",
+    ],
     "OracleGraphStorage": [
         "ORACLE_DSN",
         "ORACLE_USER",