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There are many solutions, but the Libevent library and the Libev library can greatly improve performance and event handling capabilities. In this article, we discuss the basic structures and methods used to use and deploy these solutions in UNIX® applications. Both Libev and libevent can be used in high-performance applications, including applications deployed in
Performance five ways to improve SQL performance release Date: 4/1/2004 | Renew Date: 4/1/2004 Johnny Papa Data Points Archive Sometimes, in order for the application to run faster, the whole point of doing so is to make some minor adjustments here or there. Ah, but the key is to determine how to adjust! Sooner or later, you'll experience a situation where SQL
Brief introduction With the increasing application of DB2, more and more database developers are confronted with the problem that the query is too complicated and the performance is difficult to be accepted in the process of project development. This article will mainly from a database developer's point of view introduces several commonly used methods to improve the pe
Msdn is still the most comprehensive knowledge base. Today, I wrote a program under. Net Cf. In order to improve the performance of the program as much as possible, I searched the following document. In fact, Microsoft told us a lot of effective techniques. Let's learn new things from a warm-up! How to: improve performance
Reprint: http://www.codeceo.com/article/24-ways-improve-aspnet-web.htmlIn this article, you'll describe some of the ways and tricks to improve the performance of ASP. As we all know, solving performance problems is a tedious task, and when performance issues arise, everyone
1. Caution With exceptionsIn Java software development, Try-catch are often used for error trapping, but Try-catch statements are very bad for system performance. Therefore, you should try to avoid applying it in the loop.2. Using Local variablesThe parameters passed when the method is called and the temporary variables created in the call are saved in the stack, which is faster. Other variables, such as static variables, instance variables, and so on
part. When you need to create a Exception, the JVM has to say: Don't move, I want to save a snapshot of what you are now, so stop the stack and the stack operation temporarily. Stack traces contain not only one or two elements in the runtime stack, but each element in the stack.If you create a Exception, you have to pay the price. Fortunately, the overhead of catching exceptions is small, so you can use Try-catch to wrap the core content together. Technically, you can even throw an exception at
July 2004 issue of the MSDN Magazine's Cutting Edge column. The cache schema for ASP. NET is as follows: V. Pre-Request cachingIn front of me, I mentioned that even if we only made a small performance improvement in some places, we could get a big performance boost, and I like to use pre-request caching to improve the perf
placed in a function to execute a query, the index will not work, and a more efficient notation 2.Query for a row of data from the most recent date: ? no problem, no major improvement is possible. If there is a problem, you can make a significant optimization. ? That 's correct! This SQL statement will be executed according to the indexed Top-n query, and its efficiency INDEX UNIQUE SCAN is equivalent, so it will be very fast. 3.Two query statement
memory is much faster than retrieving data from the back-end data store, regardless of the speed of the database. Reading data from a local hard disk is usually faster than retrieving data from the database. As a result, you can typically cache data on a WEB server (stored in memory or on a disk) to improve performance. Caching is a traditional way of exchanging time in space. If you're caching the right
7 Suggestions for using HTTP/2 to improve performance The historical Hypertext Transfer Protocol (HTTP standard) has been upgraded recently. HTTP/2 was approved in May 2015 and has been implemented in many Web browsers and servers (including NGINX Plus and open source NGINX ). About 2/3 of browsers support HTTP/2, and this proportion is increasing every month. HTTP/2 is built on the Google SPDY protocol. Ch
Use Function. apply () parameter arrays to Improve the Performance of JavaScript programs, Let's talk about Function. apply () in improving program performance. Let's start with the Math. max () function. Math. max can be followed by any parameter and return the maximum value among all parameters. For example alert(Math.max(5,8)) //8 alert(Math.max(5,7,9,3,1,6))
By using some assistive tools to find bottlenecks in the program, you can then optimize the code in the Bottleneck section. There are generally two scenarios: optimizing code or changing design methods. We generally choose the latter because it is better to improve the performance of the program than to call some optimized code without calling the following code. A well-designed program can streamline the c
Tags: using query www blog find order to avoid INI for meOriginal address: http://www.sqlpassion.at/archive/2014/04/08/improving-query-performance-by-using-correct-search-arguments/Improving Query performance by using correct Search Arguments April 8, 2014 • Klaus Aschenbrenner Improve database performance by us
Using memcached to improve the performance of. NET Applications 2011-03-27 20:31:26 Tags: distributed cache. NET Memcached Performance Performance original works, allow reprint, please be sure to use hyperlinks in the form of the original source of the article, author information and this statement. Otherwise,
How do you improve the performance of your SQL Server database? The author thinks that we should follow the order from outside to inside to improve the running performance of the database. The following figure: First layer: network environment. To the enterprise to meet the database reflection speed is relatively s
Problem Description: In Win7, in addition to changing hardware, is there any way to improve the performance of the hard drive? Problem analysis: In general, our hard drives are not fully able to play out all the performance, you can use some settings to put the performance has not played out, and better utilize a
(the equivalent of restaurants and buddies) and the database (equivalent to kitchen and chef) deployed separately in different servers, to avoid the contention of hardware resources.This time the store expands, the customer does not have to wait in line waiting, all can enter the dining room. The expansion of the kitchen and restaurant area allows the chef and the man to take the usual tools out of the cupboard and put them on the obvious, ready to be used, so that the efficiency of the work is
the release version mode instead of debug mode. If you use a debug template, the request time-out is extremely easy. Deploy it as a release, and you'll see a big boost in speed.5. Close the View state of the pageThe View state is mainly used after submission, and it is only useful if the data on the page is submitted to this web. The default is "true". If you don't use form data callbacks, you can turn off View state.%@ Page EnableViewState="false" %> 6. Avoid using Response.RedirectRedirect (
-enabled and implemented in the form of helper classes. 2. Design coarse granularity EJB Remote interface method As mentioned above, each client's invocation of the EJB is a remote call, and some checks are performed, such as access control, transaction processing, activation/hibernation, and so on. Therefore, the EJB call is a few times slower than a remote call, and the time difference between invoking the local method is greater. Reducing the number of calls to a method can
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