Replace StringBuilder with simple string concatenation ------------------------------------------------------ Key: JGRP-2330 URL: https://issues.jboss.org/browse/JGRP-2330 Project: JGroups Issue Type: Enhancement Reporter: Bela Ban Assignee: Bela Ban Priority: Minor Fix For: 4.0.17 Apparently simple string concatenation is faster than StringBuilder.append(). Also, we have occurrences of StringBuilder.append() that's not guarded by a {{log.isTraceEnabled()}} (e.g. in {{NAKACK2.overwriteDigest()}}): remove that.