logback 1.1.6 发布了，该版本改进内容包括：
LogbackValve (in logback-access) now attempts to
load the configuration file as a resource if it cannot be found on
the filesystem (LOGBACK-1069). This
is helpful in scenarios where applications are using an embedded
Tomcat server.
JMXConfigurator.reloadDefaultConfiguration()
method now tolerates programmatic configuration without a
URL. This change was provided by Vedran Pavic in PR 302.
RollingFileAppender will output an error message
if the date time pattern in the %d token within the fileNamePattern is not collision free. This
fixes LOGBACK-1137. In
a similar vein, every instance of FileAppender will
now detect if it shares the same File
option value as given for an appender defined earlier. In
addition, RollingFileAppender instances now check for
colliding FileNamePattern values.
Fixed NullPointerException thrown by RollingFileAppender if the name of the rollover
target path did not contain a parent. This issue was reported in LOGBACK-1054
by Paulius Matulionis. Analysis of the problem and the relevant PR
was provided by Ferenc Palkovics.
BasicConfigurator.configure method call executes
significatly faster. Improved documentation for configuration
using JDK 1.6 service-provider facility. These changes are in
response to LOGBACK-1141
requesting faster logback start-up time.
Fixed issue with variable substitution with the value ending in a colon. This problem was reported in LOGBACK-1140 by Eric Cook.
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