Bitmap cache mechanism, bitmap cacheThe Bitmap cache mechanism loads a bitmap to the UI, which is relatively simple and straightforward. However, if we load a large amount of bitmap data at a time, it becomes complicated. In many cases (for example, ListVIew, GridView, or ViewPager), the displayed image and the image to be rolled are generally unlimited. Memory usage can be reduced by reclaiming components
Browser cache analysis and browser cache
The concept of cache is closely related to both the frontend and backend, and must be combined with the frontend and backend. This article analyzes the concept from the perspective of the previous end.
One interview question that has been asked many times:
What are the concepts related to
In-depth understanding of browser cache principles and browser cache
The browser cache stores files on the client. A good cache policy can reduce the usage of network bandwidth, increase the access speed, improve the user experience, and reduce the burden on the server. Therefore, it is necessary to understand its impl
[. NET object-oriented programming advanced ] (15) Cache (Cache) ( two ) using cache to boost program performanceThis section is guided by:The last section says that caching is a technology that takes space for time, introduces client-side caching and two commonly used server-based ease-of-use, this section focuses on a . NET
HTML5 offline cache aka Application cache, is a buffer from the browser's cache, in order to save data in this cache, you can use a description file (manifest file), lists the resources to download and cache.Manifest fileThe manifest file is a simple text file that tells the browser what to
What is deferred loadingThe association and collection tags in resultmap have deferred load functionality.Lazy loading means that when you associate a query, the master information is loaded first using lazy loading. The associated information is then loaded when the associated information is used.Setting up lazy loadingneed to be Sqlmapconfig.xml file, set the lazy load in the tab. Lazyloadingenabled, aggressivelazyloading
set item description
allowable value
: This article mainly introduces the dynamic cache (S method) and quick cache (F method) in ThinkPHP. if you are interested in the PHP Tutorial, refer to it. The default caching method is File caching. you can define other caching methods in the project configuration File. for example, you can modify the default caching method to Xcache (of course, your environment needs to support Xcache)
ThinkPHP also pro
1. Why Use CachingHibernate uses caching to reduce the number of accesses to the database, which improves hibernate execution efficiency. There are two types of caches in Hibernate: first-level cache and level two cache.2. First level cacheHibenate cache, also known as the session cache, when invoking the session's Sav
Object caching is to add the query data to the cache, the next time you query again directly from the cache, rather than go to the database query.Object caching is generally for methods, classes, and the combination of spring's AOP objects, method caching is simple. There is a need for cutting programming, using spring Methodinterceptor or using @aspect.The code is as follows: PackageCom.hoo.common.ehcache;
Common cache components and cache Components
There are many cache types, and the most common one is the memory cache. There are also many ways to implement the memory Cache, such as using static variables, such as Cache, but these
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I recently read about discuz written by Dai zhenjun.
!
An article on the Cache Design of NTArticleDiscuz
!
NT Cache Design Analysis [original], there are some ideas, let's write it here for everyone to make a brick .;)Caching is really a good thing. It can effectively improve the speed of the system i
primary database is only responsible for writing requests. Keep active and master libraries synchronized from the library. This architecture has a great improvement over the previous, general Internet application. This architecture can be very well supported. One of his shortcomings is more complex, the master-slave library to maintain efficient real-time, or quasi-real-time synchronization is a difficult thing to do. So we have another way of thinking about using a
The index cache is actually something that exists to optimize the vertex cache and can save memory consumption. It is understood that the combination of the index cache with the vertex cache will be much faster. Index caches and vertex caches are like Yu Boya and Zhong Ziqi periods
The index
[. Net Object-Oriented programming advanced] (15) caching (Cache) (2) Using Cache to improve program performance and javacache caching
[. Net Object-Oriented programming advanced] (15) Cache (ii) using Cache to improve program performance
This section introduces:
In the previous section, the
Understanding browser cache and browser cacheBrowser caching, that is, client caching, is not only a provisioner for static resource optimization in web page performance optimization, but also an inevitable problem for countless web developers in their work processes. Browser cache is divided into: Strong cache and negotiated
Leveldb learning: Cache and leveldb learning cache
Leveldb implements the cache buffer substitution algorithm by itself. For details, see the code cache. h and cache. c files. In leveldb, table_cache is implemented based on class cache
In php, the outputbuffering cache (php's own cache mechanism) is provided to control the output display sequence of the program ). If the Ob cache is enabled, the output must first be stored in the ob cache and then stored in the program cache. If it is not enabled, the syst
A simple and practical PHP cache complete instance, simple and practical php Cache
This article describes a simple and practical PHP cache class, it can be used to check whether cached files are updated within the set time, clear cached files, generate cache file names based on the current dynamic files, create directo
Hibernate
Secondary cache:
Definition:
1. The second-level cache is called the process-level cache or sessionFactory-level cache. The second-level cache can be shared by all sessions.
2. the life cycle of the second-level cache i
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