java performance tuning tips

Want to keep your project running at high performance? Here are some tips you can take to eliminate cache bottlenecks, as well as some other performance tuning recommendations.Most developers think that performance optimization is a complex topic that requires a lot of work

snippets. The general idea is simple: reusing these resources is cheaper than creating new resources over and over again.A typical example is the database connection in the cache pool. The creation of a new connection takes time, and if you reuse an existing connection, you can avoid this situation.You can also find other examples in the Java language itself. For example, the valueof method of the integer class caches a value between 128 and 127. You

Most developers believe that performance optimization is a more complex issue and requires a lot of experience and knowledge. Yes, it is not wrong. Admittedly, it's not easy to optimize your application for the best performance, but that doesn't mean you can't do anything without getting the experience and knowledge. Here are a few easy to follow suggestions and best practices that can help you create a goo

prevents people from overwriting the length () method. In addition, if you specify a class to be final, all methods of that class are final. the Java compiler will look for opportunities for inline (inline) all final methods ( This is related to the specific compiler implementation ). This will increase the performance on average 50%. 1.6 Use local variables as much as possibleparameters that are passed

In-depth Java Program Performance tuning (Amdahl law, cache component, parallel development, thread pool, JVM tuning)Course Lecturer: SpecialCourse Category: Java coreSuitable for people: BeginnerNumber of lessons: 33 hoursUpdate level: CompleteUsing technology: Amdahl Law,

Need for Performance Tuning In this world of SAP programming, ABAP is the universal language. in most of the projects, the focus is on getting a team of ABAP programmers as soon as possible, handing over the technical specifications to them and asking them to church n out of the ABAP programs within the "given deadlines ". Often due to this pressure of schedules and deliveries, the main focus of m

Become a Java GC expert (5)-Java Performance Tuning principle, gc Tuning Not every program needs optimization. If the performance of a program is the same as expected, you don't have to put extra effort into improving its

11 simple Java performance tuning techniques, java Tuning Most developers naturally think that performance optimization is complex and requires a lot of experience and knowledge. Well, it cannot be said that this is completely wro

A basic knowledge 1.1 What is the performance Before performance tuning, let's first look at what performance is. As for performance, I think everyone who has studied Java can list a few points or even talk about it. In the book

The main processes of tuning the JVM are:1. Determine heap memory size (-XMX,-XMS)2, the rational distribution of the new generation and old generation (-xx:newratio,-XMN,-xx:survivorratio)3. Determine the size of the permanent zone (-xx:permsize,-xx:maxpermsiize)4. Select the garbage collector5, the garbage collector to set reasonable6. Disable GC (-XX:+DISABLEEXPLICITGC)7. Disable class Metadata recycling (-XNOCLASSGC)8. Disable class validation (-x

A basic knowledge1.1 What is performanceBefore performance tuning, let's start by understanding what performance is. With regard to performance, I think everyone who has studied Java can list a few points and even talk about it. In the J