Log4j 2.6 发布了，本次发布的一些新特性： o LOG4J2-1270: (GC) Added support for garbage-free logging in steady state. This includes Async Loggers and logging synchronously to the console and to a file, but does not include the AsyncAppender. This release makes the GelfLayout and the main patterns in the PatternLayout garbage-free. o LOG4J2-1297: (GC) Added manual page on garbage-free logging. o LOG4J2-1373: (GC) Update Logger wrapper Generator tool to generate methods for the new Logger methods. o LOG4J2-1326: (GC) Added methods to the Logger interface for logging CharSequence messages. o LOG4J2-1344: (GC) FileAppender, RollingFileAppender and MemoryMappedFileAppender are now also garbage-free by default. o LOG4J2-1278: (GC) Added unrolled varargs methods to Logger API, added Unbox utility to avoid auto-boxing when logging primitive values. o LOG4J2-1271: (GC) Add MessageFactory that avoid allocation by reusing a cached ParameterizedMessage instance. o LOG4J2-1293: (GC) Add interface StringBuilderFormattable to enable converting Messages and parameters to text without allocating temporary objects. ParameterizedMessage, ObjectMessage, SimpleMessage and ThreadDumpMessage now implement StringBuilderFormattable. o LOG4J2-1274: (GC) Add encode(LogEvent, ByteBufferDestination) method to Layout API to enable converting LogEvents to bytes without creating temporary objects. o LOG4J2-1362: Added a YAML layout. Thanks to Gary Gregory. o LOG4J2-1179: Documented benchmark results comparing Log4j 2 performance to other logging libraries. o LOG4J2-1011: Document dependencies for layouts. o LOG4J2-621: Pattern to drop first N package parts. Thanks to Lee Theobald, Kamal Mettananda, Gary Gregory. o LOG4J2-494: Support merging configurations to for a composite configuration. Thanks to Philipp Knobel. o LOG4J2-1357: Option to not log stack traces for logged Throwables in GelfLayout. o LOG4J2-1348: Add an AutoCloseable ThreadContext class: CloseableThreadContext. Thanks to Greg Thomas, Gary Gregory. o LOG4J2-1299: Add pattern converter for thread id and priority in PatternLayout. o LOG4J2-124: Add shutdown methods to LogManager. o LOG4J2-1221: Added async logger Timeout wait strategy and made this the default wait strategy for async loggers. This prevents a rare deadlock that may occur on Solaris. Thanks to Michael Barker. o LOG4J2-1080: Added option to discard events below a certain log level if the async logger ring buffer or async appender queue is full. o LOG4J2-1237: Make PatternLayout header and footer accept a pattern. Thanks to Mike Calmus, Gary Gregory. o LOG4J2-1244: Make header and footer values customizable in JSONLayout. Thanks to Anshu Garg, Remko Popma, Gary Gregory. o LOG4J2-1245: Make CSV Layout header and footers accept patterns. o LOG4J2-1192: Dynamic Subject for SMTP Appender. Thanks to Jörg Bretschneider, Gary Gregory. o LOG4J2-1277: FormattedMessage, MessageFormatMessage and StringFormattedMessage should support passing in a Locale to ensure appropriate formatting. Thanks to Gary Gregory, Ludovic Hochet. o LOG4J2-1303: Add documentation links to runtime dependencies in each component intro page. o LOG4J2-1252: JeroMqAppender should support layouts. o LOG4J2-1217: PatternLayout option to limit length of text. Thanks to Thies Wellpott. o LOG4J2-1133: Add JNDI lookup documentation. o LOG4J2-1169: PatternLayout: Possible variable substitution in equals substitution parameter. Thanks to Gerald Kritzinger. 完整改进记录，可以在这里查看。 Log4j 2.6 发布，Java 日志组件下载地址
