public class TopSellerRecommendationPanel extends AbstractShopBasePanel { @SpringBean private FeatureToogleBean featureToogleBean; ... @Override protected void onConfigure() { super.onConfigure(); setVisible(featureToogleBean.isTopSellerFeatureEnabled()); } ... }
vagrant@app-server-node-4:~$ ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.2 29640 4300 ? Ss 08:38 0:02 /sbin/init root 2 0.0 0.0 0 0 ? S 08:38 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S 08:38 0:02 [ksoftirqd/0] root 5 0.0 0.0 0 0 ? S< 08:38 0:00 [kworker/0:0H] ... vagrant@app-server-node-4:~$ ps aux | grep java root 1827 1.4 7.2 2458576 149452 ? Sl 08:39 8:26 java -classpath /usr/share/shop/product/lib/product-microservice-0.5.5.jar:/usr/share/shop/produ ct/lib/scala-library-2.10.3.jar:/usr/share/shop/product/lib/akka-actor_2.10-2.2. 4.jar:/usr/share/shop/product/lib/spray-can-1.2.1.jar:/usr/share/shop/product/li ... vagrant@app-server-node-4:~$ ps aux | grep java | wc -l 6
With all the benefits they bring, microservices also create several challenges:
Type | Star | Chain | Circle | Complete Structure |
---|---|---|---|---|
centralization | high | medium | low | very low |
communication | low | medium | much | very much |
controllability | much | medium | low | very low |
mkdir -p $PACKAGE_BASE_DIR cp build/product.jar $PACKAGE_BASE_DIR/usr/share/shop/product.jar mkdir -p $PACKAGE_BASE_DIR/DEBIAN cat > $PACKAGE_BASE_DIR/DEBIAN/control <<EOL Package: product-service Version: 1.0.0 Section: base Priority: optional Architecture: amd64 Depends: mongodb (>= 2.8.0) Maintainer: Bernd Zuther <bernd.zuther@codecentric.de> Description: Product Service EOL touch $PACKAGE_BASE_DIR/DEBIAN/postinst dpkg-deb --build $PACKAGE_BASE_DIR $BUILD_ARTIFACT reprepro -Vb /var/packages/debian includedeb shop $BUILD_ARTIFACT