redis performance tips

Website performance is a key factor for any successful website. Today, WordPress is becoming more popular than ever before. The 11 tips mentioned here to improve WordPress speed and performance may be useful to you. 1. Install the DB cache plug-in The DB cache plug-in can cache each database query for a lifetime. Its advantage is that the speed is far higher than

According to some tips on the official website, following these steps can improve the performance of struts2. Because struts2 inherits webwork, so webwork is the same. 1. Disable Logging and devmode. devmode is set in struts. properties. To Disable Logging, modify the Web. xml file and add the following parameters. 2. Do not use interceptor unless necessary ). 3. correctly set cache-control and expires

Article Title: tips for using high-performance dual-effect firewall for LINUX. 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. 　　 Working on Windows Many users use both Linux and Windows, although many users only want to play games. There are three ways to run Linux and

(); } return Convertview;} Static class Viewholder { TextView text; ImageView icon;}3. Optimize the layout file, prevent the level nesting too deep, preferably not more than 5 layers(1) Tools to use the viewing layout: Hierarchy Viewer(2) Using the Layout optimization tool: layoutopt4. Optimize Activity Background MapFirst of all we need to know that in Android activity, there are not only the view that you use when you use Setcontentview, but also some other view.The root view is a

Here are some tips I've summed up, just for reference. The following code is basically in the jquery source can be seen, if the wrong place, please point out. Use the source method as much as possible JavaScript is an explanatory language and is slower to execute than a compiled language. The way the browser has been implemented, don't go through it again. In addition, the browser has implemented a number of methods in the algorithm has done a lot

This article discusses JavaScript performance optimization. Firefox has the fastest JavaScript parser SpiderMonkey, with a variety of efforts to make JavaScript faster, one of which is asm.js. Asm.js is a subset of JavaScript that is produced by Emscripten, which makes a lot of optimizations for the JavaScript code that is compiled by C/s + +, which is hard to look at after compiling code, which is why you can't write the optimized code yourself, but

, and also prevents the MVCC cleanup process from reclaiming old tuples or index entries that are no longer needed.Submission Date/time not that easyThere are two very complicated things in programming:Processing encodingWorking with dates/times across multiple time zonesTo solve the second problem, it is a good idea to save all timestamps in the UTC time zone. However, when using MySQL, you also need to set the Uselegacydatetimecode JDBC driver configuration property to False.ConclusionAs you c

configuration. Linux is rich, powerful, and flexible, and you can do a variety of tasks with it, and in this article we'll discuss some tips for improving the performance of Linux servers.1. Tuning the Linux kernel elevator algorithm for disk I/OAfter selecting the file system, there are some kernel and mount options that may affect its performance, one of which

there is no need to optimize unless you feel it can make your code easier to read (and Final,static,static final is more true)Frequently measuredBefore you start optimization, make sure you have some problems to solve. Make sure you can measure your existing performance accurately, otherwise you won't be able to measure the benefits of the alternatives you're trying toEach statement in this article has benchmarks, and the source code for the benchmar

) compiler, a dynamic compiler, is different from a static compiler (such as GCC,JAVAC, etc.) and is optimized using data from the process that the program is running. The Gil is still in pypy for historical reasons, but the ongoing STM project attempts to turn PyPy into Python without Gil.If the Python program contains a c extension (non-cffi), the JIT optimization effect will be greatly reduced, even slower than CPython (than NumPy). Therefore, it is best to use pure python or cffi extension i

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 when the method is called and temporary varia

You have completed your brand's new application, and everything works like a charm. To use your network. Everyone is happy. Then, suddenly, an explosive user killed your MySQL server and your website was closed. What's wrong? How can you stop it? The following are some tips for MySQL performance optimization, which will help you and your database. Focus on In the early stages of development, you should kno

Oracle Database 10g Performance Tuning tips and techniques is recommended. For Oracle performance test, diagnosis, analysis, and optimization, see! Chapter 2 Basic index principles (beginner developer and beginner dBA). For Oracle index optimization, refer! Chapter 4 tuning the database with initialization parameters (DBA), optimize the Oracle database by a

Here are some tips on optimizing client JS performance: 1. About the JS cycle, the cycle is a common flow control. JS provides three kinds of loops: for (;;), while (), for (in). In these three loops, for (in) is the least efficient because it needs to query the hash key, so as little as possible in the for (in) loop, for (;;), while () loop performance is basic

1. TraceView1) When using the TraceView plugin in Ddms, you can increase the cache size in the settings, which increases the tracking time of the tracevew.　　　　2) do not recommend the selection of intermittent sampling, the results are often not allowed　　　　2. Developer Tools--Show surface updatesIf the interface has a cyclic redraw problem, turn it on to find that the interface is flashing continuously.　　3. Debugtool ProjectThis is our own tool for viewing real-time

Tips: How to improve MySQL Performance (1) (2 ). 5. NOT we often use some logical expressions in the where clause during queries, such as greater than, less than, equal to, and NOT equal to. we can also use and (and), or (or) and not (not 5. NOT When querying, we often use some logical expressions in the where clause, such as greater than, less than, equal to, and not equal to. we can also use and (and), o

multiple data members are needed for frequent lookups or visits.2 Sets and lists (list)The union,intersection,difference operation of set is faster than the iteration of the list, so if a list intersection is involved, the set, or the bad problem can be converted to set to operateFinding the intersection of listsFrom time Import timeT = time ()LISTA=[1,2,3,4,5,6,7,8,9,13,34,53,42,44]LISTB=[2,4,6,9,23]Intersection=[]For I in Range (1000000):For a in Lista:For B in Listb:If a = = B:Intersection.a

block elements can be solved, but according to my own test, plus with this method is invalid, if there is no doctype even add width to the element can not let the block element center.Principle analysis: Missing DOCTYPE declaration.IE8 under Input[button submit] settings Margin:auto cannot be centeredOccurrence: Under IE8, if a label such as button (such as button input[type= "button"] input[type= "Submit") set {display:block; margin:0 auto;} If you don't set the width, you can't center.Workaro

Label:About the effect of SQL condition matching on execution efficiency test First, create a scalar functionCreate function Ff_test ()returns intAsBeginDECLARE @i int=0while (@iSet @i+=1Return @iEnd Next, select a random table, where you use the business table Mt_delegate Observe the following two types of situations 1. Select * from mt_delegate where procid=-1 or dbo.ff_test () >10000 2. Select * from Mt_delegate where dbo.ff_test () >10000 or Procid=-1 The result is that the order of the Wher

web| Program | skills | performance | skills | performance skills Author: Rob Howard This article discusses • Common ASP.net performance difficulties • Useful performance tips and tricks for asp.net • Recommendations for using the database in asp.net • Caching and