java application performance

In, Microsoft's Rico Mariani made a comparison between the performance of C # And C ++ in actual application. The things originated from Microsoft's Famous Veteran Raymond Chen (the super cool-man who is admired below) who wrote an English-Chinese dictionary program in C ++ to describe the process of optimizing the C ++ program. He started from a simple and intuitive version of the code and continuously tes

throughout the life cycle of a product or project. It is often difficult to expect dynamic caching to solve problems if performance is not met in the late performance testing phase. Cache Overview The core idea of dynamic caching is reuse. In the design architecture of a typical WebSphere Commerce enterprise application, as shown in Figure 1, from the database

There is a kind of speed called Turtle line, there is a kind of feeling called unbearable, there is a kind of desire called performance improvement, there is a kind of difficulty called the bottleneck. Everyone wants their programs to run quickly, but how hard it is to improve performance is, even getting started. Which of the following is the key to performance

for Java performance More concerned about the students probably know the "Java performance" this book, in general, many students in the daily writing Java Code is seldom to care about performance issues, but in the process of writ

The platform of large dynamic application system is mainly aimed at the low-level system architecture of large traffic and high concurrent web. The operation of large web site needs a reliable, safe, scalable, easy to maintain application system platform as the support to ensure the smooth operation of Web applications. Large dynamic application system can be div

1. Disable sessionBe sure to disable this if you are not using session-tracking. You can set the following in each asp.net page: Enablesessionstate= "false"%> Of course you can design the 2. Output Buffer SettingsThis method is very helpful to your application.asp.net applications are basically generating data in bulk on the server side, you must set up Response.Flush emptying buffers. This will reduce the buffer pressure on the server side. Replace into 3. Avoid server-side validation.S

In the article, using Nginx load Balancing to build High-performance. Netweb application One, let's have a preliminary understanding of Nginx, and we'll use the Nginx demo cluster below the Windows platform to deploy our Web applications. First, download Nginx deployment package to Nginx website to download a Windows platform under the Nginx deployment package, I currently download a nginx-1.6.2 version of

is larger. Because, the second way increases the server-side interpretation time, thus reducing the performance of the ASP program. 2. Try to do an action with an ASP file Many people like to do in an ASP program at the same time, such as add, delete, search, and so on multiple actions, do not think that this is effective use of the file, on the contrary, the result is that the application is slow to run a

Recently, I have been doing ACM on the timus online judge website. First, let's take a look at timus 1114. boxes: This question requires calculating the number of combinations of balls of the two colors in the box. We found that the sameAlgorithm, C #ProgramIt is 62 times slower than the C ++ program. Is it true that the performance of C # applications must be poor? No. In fact, the algorithm used in this question is very efficient. The above

In the development process, sometimes we need to use static constants in the activity, as a novice developer, we often directly define static constants in the activity, which will lead to the activity is not able to completely destroy, It is also said that the activity is still occupied a thread, unless the thread is forced to kill, in order to improve the performance of the application, we will be in the d

First, the problems encounteredWhen we deploy a Web application with an IIS server, when many users have high concurrent access, the client responds very slowly and the customer experience is poor, because when IIS accepts a client request, it creates a thread that consumes large memory when the thread reaches thousands of. At the same time, because these threads are switching, the CPU usage is also high, which makes IIS more difficult to perform. So

, the waste will be even more alarming, and the space will be gone without the amount of data being cached.Memcached characteristics of non-communication Yes memecached from many distributed cache products, such as JBoss cache, Oscache, to meet the site's need for massive cache data. Its client-side routing algorithm consistent hash becomes the classic paradigm of data storage scalability Architecture design. In fact, it is the distributed cache servers in the cluster that do not communicate wit

automatically found during initializationFile and create a cache instance based on its configuration.Attention:Other statement in this module update the data, the other modules update the data, and even the third-party system to update the data. Otherwise, the appearance of dirty data will cause great danger to the normal operation of the system. It is recommended that you avoid the blind use of the cache if you cannot fully determine the extent of the data update operation. 2.read-only caches

application| Performance | Virtual host we often find that when the number of visits to the site is constantly rising, it is a happy thing, but I also found that the increase in traffic also brought the burden of the server, especially for the virtual host users, Now the virtual host provider on the network mainly uses CPU upper limit control, when the server program (Web program) CPU occupancy exceeds a li

Stefan Hagen introduced the use of Cloud C4C in application in the blog, SAP Cloud application Studio performance Best Practices Studio performs some performance-related best practices for ABSL programming.Some guideline are sketchy in the article. Here are a few concrete examples.How to bulk invoke Bo actionA bad exam

contributed to improved performance. Two () is the fastest run on a JIT-free device, and one () is the same for a device with a JIT. He used the improved for loop syntax in JDK1.5. Conclusion: The improved for loop is preferred, but the handwritten counting loop is considered in the ArrayList iterations with a demanding performance. 9. in the private interior, consider using package access to override p

In this article, we will introduce the user's optical fiber connector (SC), straight-through optical fiber connector (ST), fixed Optical Fiber Connector (FC) and LC optical fiber connector and their application, performance and terminal requirements. Unlike the BNC connector widely used in the/V industry, fiber optic connectors gradually develop with the maturity of fiber technology. Copper connectors gener

Overreleased object that detects the complete memory of the zombie. Note that this memory history is the only part of the allocation instrument in the use of meaningful zombie tracking templates. discover Zombies in your code Open the zombie template. Select your app to select a target from the pop-up menu. Click the Record button and run your app. When a zombie gives a dialog box, click the Message Text dialog box to the right of the attention button. Open the Extended

real problem and write it down. It is best to relate to business or mission critical applications such as your E-commerce platform, online transaction applications, payment gateways, risk computing, billing systems, and so on. Identify applications or services that have a severe impact on your business due to poor performance and/or downtime, and record the following: Number of issues and severity levels Average repair time (mttr--is usually the a

One of the important issues to consider when designing a new or analyzing an existing system is the design of the application. Even if the database is well designed and optimized, application design is not appropriate or a database that can cause performance problems. Practice has shown that if there is a design problem with the