use database as cache_type (IBM#794)

Signed-off-by: Madhav Kandukuri <madhav165@gmail.com>

Author: madhav165

.env.example

@@ -14,7 +14,7 @@ DATABASE_URL=sqlite:///./mcp.db
 # DATABASE_URL=mysql+pymysql://mysql:changeme@localhost:3306/mcp
 
 # Cache Configuration
-CACHE_TYPE=memory
+CACHE_TYPE=database
 # CACHE_TYPE=redis
 # REDIS_URL=redis://localhost:6379/0