Benoit Tellier created MIME4J-303:
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             Summary: Base64OutputStream is two time slower than its Java8 
counterpart
                 Key: MIME4J-303
                 URL: https://issues.apache.org/jira/browse/MIME4J-303
             Project: James Mime4j
          Issue Type: Improvement
          Components: core, dom
    Affects Versions: 0.8.5
            Reporter: Benoit Tellier
             Fix For: 0.8.6


While looking and running mime4J benchmarks, I tried some alternative 
implementations for  Base64 encoding / decoding.

Base64InputStream proved to be 20% faster than its Java8 counterpart.

However, throughtput went from 280 MB/s to 520 MB/s by switching to Java8 
Base64.getMimeEncoder().wrap(...)

Tests pass and this speeds up message writing operations... Apache James can 
for instance beneficiate of it when composing JMAP messages with large 
attachments.



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