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Jetty provides an implementation called NCSARequestLog which supports the NCSA format in files that can be rolled over on a daily basis.There are also other implementations that can be used, such as LogBack's Jetty Request Logger.
The logback project offers another implementation of RequestLog interface which provides very rich and powerful HTTP-access log functionality,
Alternatively, if neither of these options suits you, you can implement a custom request logger by implementing Jetty's RequestLog.java interface and plugging it in in similar fashion to the NCSARequestLog, as shown below.
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