The instanceof operator in Java is an operator used to check if this object is an instance of a certain class or interface or not? The return result of this operator will be true if the object is an instance of the class you are… Read More
Usually, when deploying applications to a production environment, we will deploy to many different servers. Managing logs on many servers will cause a lot of difficulties, time, and inefficiencies. It would be better if we used a solution to centralize all of the logging files.… Read More
Kibana is an GUI tool for searching and displaying logs provided by Elasticsearch. In this tutorial, I will guide you to install this tool on CentOS! First, just like when installing Elasticsearch, because by default CentOS does not contain Kibana’s installation package, you need to… Read More
After you have installed Nginx, you can deploy your application to be able to access it using the browser. Access by browser here means we only use domain or IP address with the default port of HTTP is 80 or HTTPS 443 without having to… Read More
Nginx is a web server used to run web pages, similar to the Apache HTTP server with high performance. In this tutorial, I will show you how to install Nginx on CentOS! First, because the CentOS default Repository does not contain Nginx’s installation package, you… Read More
Elasticsearch, from its name, can you also guess that it is related to search? It is a search engine built from Apache Lucene that helps us to search quickly using RESTful Web Service. It was developed using Java language and is a distributed system, easily… Read More
I showed you how to build an API Gateway using Zuul Proxy of Spring Cloud Netflix. In this tutorial, I introduce you to another way, using another library in the Spring framework ecosystem, that is, Spring Cloud Gateway! To put it simply, in principle, an… Read More
I showed you how to install the PostgreSQL server. Once the PostgreSQL server is installed, you can also work with it using the command line with the psql tool. But here we have a tool that makes us easier to work with PostgreSQL, with an… Read More
The WebSecurityConfigurerAdapter class has been deprecated since version 5.7.0 of Spring Security and has been removed since version 6.x, so if you are using the latest version of Spring Security to configure your project, please read the tutorial Configure Spring Security to use SecurityFilterChain and Spring… Read More
When creating a Spring MVC project using the Spring Tool Suite 3 IDE, you can see, we have a web.xml file that defines the configuration for the DispatcherServlet, the root-context.xml and the servlet-context.xml files define bean configuration in Spring container including ViewResolver, a Controller handle… Read More
