[LOG4J2-1334] Garbage-free synchronous logging: add LogEventFactory that reuses a cached LogEvent

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5
• Fix Version/s: 2.6
• Component/s: Core
• Epic Link: GC-free
• Assignee: Remko Popma
• Reporter: Remko Popma
• Created: 27/Mar/16 08:09
• Updated: 22/Apr/16 06:15
• Resolved: 22/Apr/16 06:15

Description

Until now I kept the scope of the garbage-free logging epic LOG4J2-1270 limited to asynchronous logging with all loggers asynchronous. This seemed a natural thing to do since async loggers already have pre-allocated all LogEvent instances.

Now that LOG4J2-1270 is nearing completion it looks as if the only thing that is required to allow synchronous logging to be garbage-free is a reusable LogEvent implementation, stored in a ThreadLocal. This ticket is to analyse and track the work for this option.

Issue Links

• is related to: LOG4J2-1347 AsyncAppender - Allow serialization of custom LogEvents