games647 · March 3, 2020 10:06 · Mar 3, 2020
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,18 @@
+https://programming.vip/docs/java-non-blocking-io-and-asynchronous-io.html
+
+Differentiation into
+Blocking mode IO (Single thread)
+-> Often standard
+Asychrnous blocking IO
+-> many thready only waiting
+-> spawn a new thread for every blocking call
+Non-blocking IO
+-> single-thread can select over multiple connection and get notified on changes
+=> Java Selector call
+-> worker can process changes
+   => worker can be minimal only used for processing
+   => less CPU overhead (thread creating + context switch between threads) 
+   => less memory overhead (holding cpu threads)
+=> Java AsynchronousFileChannel / AsynchronousSocketChannel or similar
+=> Linux: event system epoll used for networking - POSIX forbids it for files
+=> Windows: networking + files