feat: separated feature cache

rpxy-lib/src/lib.rs

@@ -60,11 +60,14 @@ where
   if !proxy_config.sni_consistency {
     info!("Ignore consistency between TLS SNI and Host header (or Request line). Note it violates RFC.");
   }
+  #[cfg(feature = "cache")]
   if proxy_config.cache_enabled {
     info!(
       "Cache is enabled: cache dir = {:?}",
       proxy_config.cache_dir.as_ref().unwrap()
     );
+  } else {
+    info!("Cache is disabled")
   }
 
   // build global