Reverse Proxy The difference between a reverse proxy and a forward proxy is that the forward proxy proxies the client; the reverse proxy proxies the server. In reverse proxy, the client is unaware of the proxy because the client does Read more…
Function Can constitute a stack of interceptors to complete specific functions, such as logging, login judgment, permission check and so on. Benefits Interceptors also allow you to modularize generic code as reusable classes. Applications of interceptors: AOP; needs some business Read more…
Introduction An Optional is a container object which may or may not contain a non-null value. It was introduced in Java 8 to cure the curse of NullPointerExceptions. In essence Optional is a wrapper class which contains a reference to Read more…
foreach list.forEach(System.out::println); map List<Integer> numbers = Arrays.asList(3, 2, 2, 3, 7, 3, 5); List<Integer> squaresList = numbers.stream().map( i -> i*i).distinct().collect(Collectors.toList()); filter List<String>strings = Arrays.asList("abc", "", "bc", "efg", "abcd","", "jkl"); // count empty strings long count = strings.stream().filter(string -> string.isEmpty()).count(); List<UserInfo> Read more…
Official Doc: https://docs.docker.com/engine/install/ubuntu/ Run the following command to uninstall all conflicting packages: for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; done Set up Docker’s apt repository. # Add Docker's official GPG key: sudo Read more…
What Causes the Error? The error is generally caused by a malfunctioning plugin, script, or code that prevents WordPress from functioning properly. If you don’t fix this problem, WordPress won’t be able to load the other files it requires. Another Read more…