App to benchmark io_uring (splice) vs epoll (sendfile) zero-copy file transfer.

Please replace in pom you linux version in this part

        <os.detected.name>linux</os.detected.name>
        <os.detected.arch>aarch_64</os.detected.arch>
        <os.detected.classifier>linux-aarch_64</os.detected.classifier>

To enable epoll use

        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-transport-native-epoll</artifactId>
            <classifier>YOUR_OS_CLASSIFIER</classifier> 
        </dependency>

or to enable io_uring - comment epoll and use

        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-transport-classes-io_uring</artifactId>
        </dependency>
        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-transport-native-io_uring</artifactId>
            <classifier>YOUR_OS_CLASSIFIER</classifier>
        </dependency>

App can be run in intelij IDEA just as simple Spring app or you can build fat executable jar with mvn clean install

To test which transport actully used call

curl 127.0.0.1:8080/thread-name

To retrieve file use

127.0.0.1:8080/file/file_name_from_DATA_folder_of_the_repo