site slf4j-in-10-slides

SLF4Jproject CekiG lc ceki qos ch JakartaCommonsLogging JCL SameproblemdomainWell establishedlibrarySowhydowere inventthewheel Becausedetailsofimplementationmatter SLF4J SLF4J SimpleLoggingFa adeforJavaProblemdefinition Abstractloggingframeworks Automatically dynamicallyselectunderlyingloggingframework inJCL Manually staticallyselectunderlyingloggingframework inSLF4J TheAPI 1 importorg slf4j Logger 2 importorg slf4j LoggerFactory 3 4 publicclassWombat 5 6 finalLoggerlogger LoggerFactory getLogger Wombat class 7 Integert 8 IntegeroldT 9 10 publicvoidsetTemperature Integertemperature 11 12 oldT t 13 t temperature 14 15 logger debug Temperaturesetto Oldtemperaturewas t oldT 16 17 if temperature intValue 50 18 logger info Temperaturehasrisenabove50degrees 19 20 21 Parameterizedlogging inefficientsyle logger debug Hello name oldstyle efficient if logger isDebugEnabled logger debug Hello name newstyle efficient logger debug Hello name Parameterizedlogging inefficientsylelogger debug Hello name oldstyle if logger isDebugEnabled logger debug Hello name newstyle logger debug Hello name MarkerAPI MarkerhibMarker MarkerFactory getMarker hibernate MarkersqlMarker MarkerFactory getMarker sql organizemarkersinagraphsqlMarker add hibMarker logger info sqlMarker selectfrom Othersupportedfeatures MDC forlog4j logbackandj u l Markers Bridginglegacysystems UsingSLF4J Migrator Conclusion Simplicityispowerful EvanWilliamsRobustness parti