fix: Avoid double usage calculation on every restart (#8856)

On every restart of the server, usage was being
calculated which is not useful instead wait for
sufficient time to start the crawling routine.

This PR also avoids lots of double allocations
through strings, optimizes usage of string builders
and also avoids crawling through symbolic links.

Fixes #8844

cmd/handler-utils.go

@@ -98,23 +98,6 @@ func isDirectiveReplace(value string) bool {
 	return value == replaceDirective
 }
 
-// Splits an incoming path into bucket and object components.
-func path2BucketAndObject(path string) (bucket, object string) {
-	// Skip the first element if it is '/', split the rest.
-	path = strings.TrimPrefix(path, SlashSeparator)
-	pathComponents := strings.SplitN(path, SlashSeparator, 2)
-
-	// Save the bucket and object extracted from path.
-	switch len(pathComponents) {
-	case 1:
-		bucket = pathComponents[0]
-	case 2:
-		bucket = pathComponents[0]
-		object = pathComponents[1]
-	}
-	return bucket, object
-}
-
 // userMetadataKeyPrefixes contains the prefixes of used-defined metadata keys.
 // All values stored with a key starting with one of the following prefixes
 // must be extracted from the header.