java application performance

This article introduces the optimal performance of a vswitch in VLAN application configuration. The content of this article is as follows: filtering service function, Layer 2 network layer switch, Layer 3 network layer switch, data frame inbound, VLAN tag, below are some examples of different forms of switch VLAN applications. Filter service features: The filter service is used to set boundaries to restrict

to call a method, you first obtain the reference of a class object and then obtain a method ID. These IDS are usually pointers in the internal runtime data structure. Searching for them may require several strings for comparison. Once you actually call them, It is very fast to obtain the value or call method. If the performance requirements are high, it is useful to search for these values and cache the results in your local code. Because each proces

This article discusses how to improve the performance of asp.net applications from page, data access, string manipulation, and provides several test tools for detecting asp.net Web site performance. Keyword asp.net application performance optimization The performance of a We

stability. This will increase customer costs, so it is necessary to take time to develop reasonable Java EE middleware environment specifications. This work should be combined with the initial capacity planning iteration. 3. Excessive garbage collection on java virtual machines Are you familiar with the error message "Java. Lang. outofmemoryerror? Exceptions t

Memory managementGarbage collection mechanism1, what is the garbage collection mechanism? (1) The garbage collector is responsible for recovering memory that is no longer used in the program, but is still occupied by various objects. (2) Without manual memory management, the Android system automatically tracks all objects and frees objects that are no longer in use. Disadvantage: The garbage collection mechanism is a double-edged sword, which can improve the productivity of the

Asp.net| Program | Performance to achieve acceptable performance levels for the code you write, you can combine the following technologies: 1. Disable the session state when it is not used. With 2. Select the session-state provider carefully. With 3. Avoid unnecessary round-trip to the server. With 4. Use Page.IsPostBack to avoid unnecessary processing of the round-trip process. With 5. Use the ASP.net

Android Application development performance optimization 1: ViewStub When developing our Android Application, you may need to dynamically display a View or Layout at runtime based on certain conditions. The most common method is to write all the views that may be used in the layout file. First, set the unwanted View. setVisibility () parameter to View.GONE (invis

Application Projects: Performance testing for AppsApplication Scenarios: App start speed video speed loading speed etc ~ ~Edge: based on app logs and uiautomator test scenarios, test results are not straightforward and accurate response, the user's experienceImprovement: take the video by hand or automatically, and then use the image processing method to obtain the test results.Schema Flowchart:The main cor

Description: This digest from Sun Weichen's mastery of struts a book If the output of a large number of logs in the program, it will obviously have a certain impact on the application. The extent to which log4j affects performance depends on the following factors:1. Log output destinations: For example, the speed at which the log is exported to the console is not the same as the speed of the output to the

Asp.net| Performance | optimization If you have the habit of viewing the HTML source code of the current browsing page in IE, you may often see code snippets similar to the following: ...... Smart you will certainly ask, what is this? What's the effect? What is the relationship between it and this article? You reader, and listen to me slowly. In fact, this is the characteristic performance of MS in asp.net

Use Application Tracking to quantitatively analyze performance changes-Linux Enterprise applications-Linux server applications. The following is a detailed description. The Apache Web server is used as an example to learn how to analyze the performance meaning of public configurations. Use application tracing to observ

Article Title: Application Tracking quantifies performance changes. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The Apache Web server is used as an example to learn how to analyze the performance meaning of public configu

Record bit by bit to optimize application performance: Do not use static constants or Activity constants in the activityDuring the development process, sometimes static constants are used in the Activity. As a beginner developer, we often directly define static constants in the Activity, in this way, the Activity cannot be completely destroyed, that is, the Activity still occupies a thread, unless the threa

Through the research of the configuration and deployment of high-performance Web server Nginx-(11) Application module of the memcached module of the two major scenarios of the article, we know how Nginx read data from memcached, if hit, then the efficiency is quite high. So:1. What if I don't hit it?We can read the data to the appropriate data server and then cache it on the Nginx server before returning th

In Lotus Notes/domino 7 application performance, part 1th, we explored how to improve the performance of the Lotus Notes/domino 7 application by effectively using Database properties and collection of documents. In the 2nd part, we'll explain how to build a high-performance

If the Java program consumes more resources and is unstable, it can use its own VISUALVM tool for monitoring and performance analysis, and can also generate snapshots for further analysis based on the application snapshot functionality it provides. The procedure is as follows:1. Execute the "JVISUALVM" command under the CMD console or Linux terminal of Windows to

index.html index.htm; #} Location/{ Proxy_pass http://huangxiang.com; Proxy_redirect default; } #error_page 404/404.html; # REDIRECT Server error pages to the static page/50x.html # Error_page 502 503 504/50x.html; Location =/50x.html { root HTML; } # Proxy The PHP scripts to Apache listening on 127.0.0.1:80 # #location ~ \.php$ { # Proxy_pass http://127.0.0.1; #} # Pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # #loc

Combined with the experience of DB2, this paper discusses some principles and methods of database application system performance optimization from four aspects of database design, query optimization, concurrency control and client/server model. Keyword DB2 performance optimization database design query optimization concurrency control C/S mode Introduction DB2

Java responsibility chain model and project application, and java liability Project Application1. Preface The last time we learned about the design of the java responsibility chain model, we will show you the practical application of the responsibility chain model project. H

There are a number of ways to monitor asp.net application performance, what is the easiest way to do it? The easiest way I've found this is to monitor the request Execution time parameter of asp.net applications in Windows Performance Monitor (Performact monitor). Microsoft's website on request Execution Time explanation: This is counter shows the time, in m