Joel Richard created SLING-4544:
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             Summary: Performance: MessageFormat shouldn't be used for logging 
in SlingRequestProgressTracker
                 Key: SLING-4544
                 URL: https://issues.apache.org/jira/browse/SLING-4544
             Project: Sling
          Issue Type: Improvement
          Components: Engine
    Affects Versions: Engine 2.4.0
            Reporter: Joel Richard


I am profiling an application where up to 5% of the rendering time is spent in 
MessageFormat.format for SlingRequestProgressTracker.log (see attached 
screenshot). Since the advanced capabilities of MessageFormat are not required 
here, it should be rather easy to implement a utility which supports {x} as 
well but is much faster.



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