[jboss-jira] [JBoss JIRA] (WFLY-7032) Optimize distributed web session creation

Paul Ferraro created WFLY-7032: ---------------------------------- Summary: Optimize distributed web session creation Key: WFLY-7032 URL: https://issues.jboss.org/browse/WFLY-7032 Project: WildFly Issue Type: Enhancement Components: Clustering Affects Versions: 10.1.0.Final Reporter: Paul Ferraro Assignee: Paul Ferraro Fix For: 11.0.0.Alpha1 Following session ID generation, we currently validate that the session ID is not already in use, in which case, we generate a new ID. This is not only racey, but requires a call to Cache.containsKey(...). This is potentially a costly call, since we need to search both memory and the cache store - particularly costly when using a remote cache store. We eventually add the new session via Cache.putIfAbsent(...), which already atomically ensures no session with that ID already exists. Additionally, when creating the dependent cache entries for a session (i.e. access meta data, session attributes), we don't need putIfAbsent semantics - a AdvancedCache.withFlags(Flags.IGNORE_RETURN_VALUES).put(...) will suffice. -- This message was sent by Atlassian JIRA (v6.4.11#64026)