log4net.Ext.Json Icon



Enable JSON logging with log4net

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Note: Moving code to GitHub, see news.
Note: New release available on nuget, see news.

Extend log4net facility with simple configuration options to create JSON log entries. This is especially handy to pass semantic information to other utilities, such as nxlog, LogStash, GrayLogs2 and similar.

Ideally, this will be integrated in log4net: https://issues.apache.org/jira/browse/LOG4NET-419

Events can be uniquely stamped and a keep alive appender can assure that your logging path is functional at all times.

log4net.Ext.Json Web Site


Logging, JSON, Libraries


Apache License V2.0


  • JSON logging
  • Simple set up
  • Easy configuration
  • Seamless integration
  • Uniquely stamped events - by a logger
  • Keep-alive appender to keep the log alive even with minimal activity


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