java application performance

increase the number of Web servers, the Web server load balanced deployment, to solve the front-end performance bottleneck, if there is still read and write pressure on the database side, you can continue to add a MySQL server, MySQL for read and write separation deployment, Such a high-performance, high-reliability Web site system is built up. Second, site optimization case based on dynamic, static con

If your node server has no nginx in front of you, you may have done something wrong. -bryan Hughes Node.js is the leading tool for building server-side applications using the most popular language-javascript. Because of the ability to provide both Web servers and application servers, Node.js is considered a key tool for development and deployment on a micro-service basis. In back-end development, Node.js can replace or extend

read and write data. The channel represents the source or destination of the buffered data, which is used to read or write data to the buffer, and is the interface for accessing the buffer. This paper mainly introduces the buffer and channel in NIO to improve the performance of the system.1. NiO's buffer class and channel In the implementation of NIO, buffer is an abstract class. The JDK creates a buffer for each

deployed in EJB containers. Because both the product catalog and the ordering information need to be persisted, use JDBC to connect to the database and use JTA to complete the database access transaction.Figure 3 Java EE application exampleThen use Jsp/servlet to implement Web performance for your app: online catalogue browsing and online ordering. In order to s

long time ago. Jai (used for image processing) has not been actually upgraded for many years and seems to have not been used anywhere, it urgently needs a huge performance improvement to adapt to the advent of the multi-core GPU era, all these Java products used in the desktop field are either abandoned or become a chicken ribs. The key point is that although we can use

performance.(4) using caching (cache)For objects or data that are often used without much change, you can store it in cache. This will increase the speed of access. This is especially important for result sets that are returned from the database.(5) Using a fast JDBC driver (Driver)Java provides four ways to access a database. Two of these are JDBC drives. One is a local drive that is outsourced with

the companion documentation for the Java EE component. If you are using a Java-bound application, you should refer to the application documentation to ensure that any changes you make do not affect application functionality.Back to top of pageBefore you beginAny type of opt

In our web project, our common Web application servers are tomcat, Weblogic, and WebSphere. They are infrastructure software for Internet applications, also called "middleware," which handles dynamic on-page requests, provides names, transactions, security, messaging, data access, and so on, and provides the development, deployment, operation, and management capabilities that should be built.How do we better monitor and diagnose

systems.In Java there is an open source project called Metrics, which captures the JVM and application-level performance parameters, and his author, Coda Hale, describes what Mertics is and why metrics is necessary in an application system, Videos and speeches can be downloaded separately on YouTube and SlideShare. Th

, you must first monitor the process that executes the Java program. Therefore, this article will explain the following questions: How to monitor Java programs? What parameters should be set for JVM? How do I determine whether to modify the code? Necessary knowledge for Java program optimization The Java program ru

[Java Performance] Notes for String concatenation, performance concatenation String Concatenation)// Before Compiler optimization, String answer = integerPart + ". "+ mantissa; // String answer = new StringBuilder (integerPart) after Compiler optimization ). append (". "). append (mantissa ). toString ();Because the compiler will optimize the concatenation of s

Before you start About this series Writing code for an application is only the first phase of the lengthy process required to deliver a robust product quality program. The code must be tested to verify its operation and accuracy. It is also often necessary to analyze the code to eliminate performance bottlenecks and resource waste (especially memory). Code must also be monitored to locate faults, identify

Michael Kopp is a technical analyst at compu-Ware's APM center excellence. He has worked as a designer and developer in the Java/Jee field for more than 10 years. In addition, Kopp also specializes in the structure and performance of virtual and cloud large-scale production deployment. ? The new APM emphasizes the cost of each transaction and helps testers increase their strategic role in maxim