Re: [I] Revamp the `Appenders` page (logging-log4j2)

["ppkarwasz (via GitHub)" <gi...@apache.org>]

ppkarwasz commented on issue #2528:
URL: https://github.com/apache/logging-log4j2/issues/2528#issuecomment-2108162517

   While restructuring the "Appenders" page we should explain the meaning of the `immediateFlush` option.
   Looking at #2023, #2025 and other discussions, users often think that `immediateFlush` forces the OS to write the data to the underlying storage device.
   
   That is not true, `immediateFlush` only flushes the Java buffers to the OS and due to the atomicity of the UNIX `read()/write()` calls this is usually enough for the users: if the appender logs to a pipe, the receiver should get messages up to [PIPE_BUF](https://man7.org/linux/man-pages/man7/pipe.7.html) atomically. For files and symbolic links [there is no limit](https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_09_07) and operations should always be atomic.


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