cache optimization

1) Request (client-to-server [request])GET (The requested way)/books/java.html (requested target Resource) http/1.1 (the protocol and version number that the request takes)Accept: */* (the type of resource the client can

Absrtact: This article mainly explains how to use the Perf observation program in the cache utilization bottleneck, and then optimize the program, improve the cache hit ratio. This paper mainly explains several common methods to improve the

Call the system to call, send text messages, email, open the URL functionHttps://github.com/anarchicknight/react-native-communications Quick Search list (by first letter)Https://github.com/johanneslumpe/react-native-selectablesectionlistview Chart

Objective:Allows beginners to better understand the SSH framework. To the future of their own, but also give others a reference. Try to build a complete SSH framework project. Overview of the three main frameworks of SSH SSH is an integrated

Issue background:　　A very simple feature recently was to request a drop-down list of data from the server using the way Ajax was requested.have done this function before, but this time to do this feature comes up with an idea:The data I requested is

This article transferred from: https://www.cnblogs.com/aspwebchh/p/6652855.htmlSome time ago, the company a new online site appeared slow response to the problem, a responsible for the project but not technical sister to find me, let me think of

1. Negative condition query cannot use indexSELECT * from order where status!=0 and stauts!=1Not in/not exists are not good habitsCan be optimized for in query:SELECT * from order where status in (2,3)2. A leading fuzzy query cannot use an

react-native-animatable Animation React-native-carousel Carousel React-native-countdown Countdown React-native-device-info Device Information React-native-fileupload File Upload React-native-icons icon React-native-image-picker Picture

In this article, let's discuss the index problem, this article will not describe how to create an index, but will explain how to optimize the index.What is an index?An index is a way to sort records by multiple fields. Indexing a field in a table

These days in the index, think of some interesting TIPS, I hope you have a harvest. First, some common SQL practices(1) Negative condition query cannot use index SELECT * from order where status!=0 and stauts!=1 Not in/not exists are

Original: MySQL Query cacheMySQL Query execution processQuery Process : The client sends a query to the server; The server checks the query cache first, and returns the results stored in the cache immediately if the cache is hit;

1. Don't expect the compiler to do any optimizations for you2.CacheThere are three levels of system representation:（1) First LevelCache (L1)is locatedCPUon the chip and operate on theCPUoperating frequency;（2) Second LevelCache (L2)Is also located

Transfer from http://www.ibm.com/developerworks/cn/linux/l-cn-networkdriver/Network Equipment IntroductionNetwork equipment is an essential part of computer architecture, and if the processor wants to communicate with the outside world, it usually

To provide you with system optimization settings services, so that you have an efficient, fast system. It also provides some useful gadgets to help you solve problems in the system optimization process. The system optimization module includes eight

1. How the Cache worksWeb cache, as a Web caching technology, can be implemented on any intermediate network element where a user accesses a Web server. According to the definition of HTTP protocol, in one page access, the user requests from the

The computer is used for a long time, because the memory occupies more and more, more and more, so the running speed becomes more and more slow. Want to carry on the computer's overall speed up, first carries on the Memory data optimization and the

When our computer is used for a long time, it will be found that the computer is running more and more slowly, many people will use a variety of software to optimize the computer. But forget a little, in fact, the Desktop menu optimization, the

9 Steps to resolve the slow shutdown of the Win7 system the specific solution is as follows: 1. Start-Control Panel-Power Options-enable advanced power management. 2, look at the computer Device Manager to see if there is a driver problem with the

The 1th chapter of the course introductionThis paper describes the curriculum background, from the front-end development changes to the development of the front-end tools, introduced the course content, the course arrangement. 2nd Chapter Study

One, Shared pool tunning The optimization of shared pool should be prioritized because a cache miss occurs more costly in shared pool than in data buffer because dictionary data is generally more expensive than the library The data in cache is kept