Mybatis (9) ------ Level 1 cache, level 2 cache, mybatis ------
In the previous chapter, we explained how to improve query efficiency through mybatis lazy loading. In addition to lazy loading, what other methods can be used to improve query efficiency? This is the cache in this chapter.
Mybatis provides a level-1 cache
In the actual project, we often need to use the cache. In general, the cache medium is memory, while the common DB stores the data on the hard disk, the cache reads are electrical pulses, and the hard disk reads mechanically to read the rotating hard drive, the speed difference is hundreds of times. Therefore, it is often possible to access the data that is often
Application Data Cache
This cache depends on the system. Web. caching namespace.
This namespace provides common data classes on the cache server. A cache class contains many methods. Because this class is a dictionary class, store any data objects, such as hash tables and datasets. These methods can add, delete, or inv
How to clear the browser cache ?, Clear browser cache?
Some strange problems are often encountered in web development. For example, if a problem is found, the script is changed, and the problem persists after the result is published, but on the server, the released script has indeed been changed !! The last thing I found was that the browser cache was playing a s
Yii2 cache introduction and use. Yii2 cache introduction and use, yii2 cache introduction author: White Wolf Source: www.manks.topyii2_cache.html this article copyright belongs to the author, you are welcome to reprint, but without the author's consent must be guaranteed yii2 cache introduction and use, yii2
* ***** Cache storage configuration items (for direct nodes with read cache and appsetting )*****
Memcache is often used for data that does not need to be changed frequently and does not need to be read from the database every time. It can prevent the cache from reading quickly in the memory, however, memcache (a distributed
In the actual project, we often need to use the cache. In general, the cached media is memory, while the common DB stores the data on the hard disk, the cache read is an electrical pulse, and the hard drive reads mechanically to read the rotating hard drive, and the speed difference is a hundredfold. So it is often possible to use the cache to access the data oft
Sometimes, you may want to cache a page, but create different versions for the page based on the request. For example, the page may have different outputs based on the values passed in the query string.
ASP. NET allows multiple versions of the same page to be cached in the output cache. The output cache may vary depending on the following factors:
The query str
Android Development record 20-get cache size and clear cache feature
Reprint Please specify: It_xiao Wizard
Blog address: http://blog.csdn.net/wwj_748
PrefaceThis blog to share how to get the size of the application cache and the ability to clear the cache, we know that our application often produces
Summary of various methods of PHP Cache Technology and php CacheThe data cache mentioned here refers to the PHP cache mechanism for database query. when accessing the page every time, the system checks whether the cache data exists. If the cache data does not exist, it conne
First of all, learn how to teach computer caching working principle?
Computer caching is when the CPU reads the data, first from the cache file, and then automatically read in the input to the CPU processing, of course, if not in the cache to find the corresponding cache file, it will be read from memory and transmitted to the CPU to deal with. Of course it take
Brief analysis of thinkphp cache (F method) and dynamic cache (S method) (daily finishing), analysis of thinkphp
The system is cached by default, and we can define other caching methods in the project configuration file, for example, modify the default cache mode to XCache (of course, your environment needs to support XCache)
For
PHP cache module cache (APC)
APC is short for Alternative PHP Cache, which is a free and public Optimized Code Cache of PHP. It is used to provide free, public, and robust architectures to cache and optimize PHP intermediate code.
1. Configure APC in PHP
To enable the APC mo
The HTTP header of HTML controls the cache information of the page in several places, including browser, intermediate Cache Server (such as squid), and Web server. This article discusses the caching of HTML pages with Cache Control Information in the header (HTML pages generated by JSP/Servlet) on the intermediate cache
Background:1:.net Core has not system.web, also wood has httpruntime.cache, therefore, the space under the Cache also Wood has.2:.net Core has a new memory cache provided, but I looked at it and did not support file cache dependencies.Therefore, under this premise, it is expected that when the. NET core comes out 2.0 next year, it may not support file
This articleArticleThis article explains a client-side page caching technique-caching static "parts" of pages in JavaScript ".
If the entire page can be cached on the browser, a huge page loaded with HTML can also run very well. You can use the HTTP Response cache header to solve this problem, or manually inject them into yourCodeOr use the @ outputcache tag on the ASPX page to declare:
However, these ca
PHP Cache Module Cache (APC)
APC is the abbreviation for alternative PHP cache and is a free, publicly available, optimized code cache for PHP. It is used to provide free, open and robust architecture to cache and optimize PHP's intermediate code.
1, PHP configuration APC
T
SSH integration Hibernate uses spring to manage hibernate level two cache, configuring hibernate4.0 above level two cacheHibernate:Hibernate is a persistent layer framework that accesses physical databases frequently.Improve application performance by reducing the frequency of application access to physical data sources.The data in the cache is a copy of the data in the physical data source, the application
Document directory
WP Super Cache Status
Super Cache Compression
Mod Rewrite Rules
Expiry Time and Garbage Collection
Accepted filenames, rejected URIs
Rejected User Agents
Cache Contents
Lock Down
Directly Cached Files
Configuration messed up?
Cache Plugins
WP Super
The original (http://www.cnblogs.com/wuhuacong/p/3526335.html) Thank Wu Huacong author for sharing!In many cases, the use of caching can improve the response speed of the program, while reducing the pressure on access to specific resources. This article is mainly for their own in the WinForm cache use to do a guided introduction, I hope you can learn some of the cache usage scenarios and use of methods. Cac
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