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Logging isn’t free A brief look at logging performance. Corneil du Plessis

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Examples – Logging with String concatenation

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Examples – Logging with Placeholder

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Examples – Logging with Placeholder toString

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Examples – Fluent Logging

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Examples – Kotlin Klogging

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Benchmark – Log4J 0.00 100000.00 200000.00 300000.00 400000.00 500000.00 600000.00 700000.00 benchmarkAToString benchmarkFluentWithLazy benchmarkFluentWithParam benchmarkKLogging benchmarkKLoggingCheck benchmarkKLoggingExt benchmarkPlaceHolderToString benchmarkPlaceHolders benchmarkPlaceHoldersNoExt benchmarkPlaceHoldersNoExtCheck benchmarkStringCat benchmarkStringCatToString Log4J Enabled Disabled

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Benchmark – Log4J – Logarithmic scale 1.00 100.00 10000.00 1000000.00 benchmarkAToString benchmarkFluentWithLazy benchmarkFluentWithParam benchmarkKLogging benchmarkKLoggingCheck benchmarkKLoggingExt benchmarkPlaceHolderToString benchmarkPlaceHolders benchmarkPlaceHoldersNoExt benchmarkPlaceHoldersNoExtCheck benchmarkStringCat benchmarkStringCatToString Log4J Enabled Disabled

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Benchmark – Log4J - No Fluent 0.00 10000.00 20000.00 30000.00 40000.00 benchmarkAToString benchmarkKLogging benchmarkKLoggingCheck benchmarkKLoggingExt benchmarkPlaceHolderToString benchmarkPlaceHolders benchmarkPlaceHoldersNoExt benchmarkPlaceHoldersNoExtCheck benchmarkStringCat benchmarkStringCatToString Log4J Enabled Disabled

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Benchmark – Log4J – No Fluent – Log Scale 1.00 100.00 10000.00 benchmarkAToString benchmarkKLogging benchmarkKLoggingCheck benchmarkKLoggingExt benchmarkPlaceHolderToString benchmarkPlaceHolders benchmarkPlaceHoldersNoExt benchmarkPlaceHoldersNoExtCheck benchmarkStringCat benchmarkStringCatToString Log4J Enabled Disabled

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Benchmark – Disabled only 0.00 100.00 200.00 300.00 400.00 benchmarkAToString benchmarkKLogging benchmarkKLoggingCheck benchmarkKLoggingExt benchmarkPlaceHolderToString benchmarkPlaceHolders benchmarkPlaceHoldersNoExt benchmarkPlaceHoldersNoExtCheck benchmarkStringCat benchmarkStringCatToString Disabled

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Benchmark – Disabled only – Log scale 1.00 10.00 100.00 1000.00 benchmarkAToString benchmarkKLogging benchmarkKLoggingCheck benchmarkKLoggingExt benchmarkPlaceHolderToString benchmarkPlaceHolders benchmarkPlaceHoldersNoExt benchmarkPlaceHoldersNoExtCheck benchmarkStringCat benchmarkStringCatToString Disabled

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Benchmark – All loggers - Disabled 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 benchmarkKLogging benchmarkKLoggingCheck benchmarkKLoggingExt benchmarkPlaceHolders benchmarkPlaceHoldersNoExt benchmarkPlaceHoldersNoExtCheck Disabled JUL LOGBACK LOG4J

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Benchmark – All loggers - Enabled 0.00 50000.00 100000.00 150000.00 benchmarkKLogging benchmarkKLoggingCheck benchmarkKLoggingExt benchmarkPlaceHolderToString benchmarkPlaceHolders benchmarkPlaceHoldersNoExt benchmarkStringCat benchmarkStringCatToString Enabled JUL LOGBACK LOG4J

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Resources & Questions • Twitter: @corneil • Github: https://github.com/corneil/logging-is-not-free Questions?