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We should use a profiler to aid find hotspots to optimize.

Claus used YourKit to find the following hot spots:

  • type converter to String could be greatly optimized as it tended to go over fallback converters
  • recipient list with only 1 element could be avoid to not use a Scanner as creating a Scanner costs performance

Performance tests

We should have some performance tests we can run and see what we archive.

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