internal cache

Today I saw the official document of MongoDB Wiredtiger Storage engine, said I Wiredtiger Storage engine understanding!After the mongodb3.2 version, the Wiredtiger storage engine is the default storage engine.Document level ConcurrencyWiredtiger

Get (), load (), and hibernate in hibernateThe session first checks whether the object exists. If the object exists, it cannot be retrieved in the database tutorial. The returned objects are all in the session cache. After modifying the attributes

The difference between get and load methods when hibernate loads data. Let's take a look at the method prototype first: 1. Get Method /*** Return the persistent instance of the given entity class with the given identifier,* Or null if there is no

Recently in the Learning Shh framework of Hibernate, the Get and load methods of the session, a little confused, do not know where the difference, or the difference between them is not deep. So Baidu a bit, the result of the problem came. The

Multithreading mechanisms for Java: Cache consistency and CASOne, bus lock and cache consistency This is the concept of two operating system levels. With the advent of the multicore era, concurrency has become a normal phenomenon, the operating

Deeply analyze the realization principle of volatileIntroduction Synchronized and volatile play an important role in multithreaded concurrent programming, and volatile is a lightweight synchronized that ensures the "visibility" of shared variables

What does the cache mean? when we use the QQ live software, we will find that a cached folder is called cache. Some friends are curious, what does this cache mean? In fact, cache refers to cached SRAM, that is, static memory. This memory usually

Origin:http://blog.sina.com.cn/s/blog_8701e6ba0102v333.html The book says that arm is the Harvard structure, but I always feel like I can't see it. Later, I have my own opinion on the analysis of the ARM9 nucleus of s3c2440. My conclusion is that "

The Session.load/get method can read records from the database based on the specified entity class and ID and return the entity object corresponding to it. The difference is:If a record that matches a condition is not found, the Get method returns

Save, update, and delete data:1. Session. save () method:The Session. save () method is used to persistently store object objects. That is to say, when session. save () is executed, an insert SQL statement is generated to save data. The following

Yiiframework getting started tutorial Yiiframework getting started tutorial 14 Cache 13. cache is a simple and effective way to improve website performance. By storing relatively static data to the cache, we can save the time to generate the data.

I. What is PC? "Then Pc = PC + 1", which is often said by the teacher. This is not completely correct. In the case of a self-increment of one in the PC, it is pointed out that in the case of non-pipeline, the pointer is obtained, decoded, and the

2.3 disk drive performance ================================== The disk drive is an electronic mechanical device that determines the performance of the entire storage system environment. This section will discuss various factors that affect the

Detailed description of Cache Usage in the YII Framework tutorial, yiiframework This example describes the YII Framework cache usage. We will share this with you for your reference. The details are as follows: The reason for cache generation is well

How Rendering Work (in WebKit and Blink) Since the beginning of browser kernel development, many rendering-related articles have been written. However, I have always wanted to write an article like How Browsers Work that systematically and

We will discuss the record and storage of Cisco router logs in the following steps. First, display the log information for the line, then save the log information to the log server, and finally send the log information to the SNMP Management

Yii Framework cache knowledge summary. Yii Framework cache knowledge summary cache is a simple and effective way to improve website performance. Websites of a slightly larger scale will store relatively static data to the cache for summary of the

Yii is a high-performance PHP5 Web application Development framework. With a simple command-line tool, YIIC can quickly create a code framework for a Web application, and developers can add business logic based on the generated code framework to

Fragment caching refers to caching a fragment of a webpage. For example, if a page shows an annual sales summary in a table, we can store this table in the cache, reducing the time that each request needs to be re-generated. To use fragment caching,

There are many requirements for batch writing data to the database, and there are also many methods, which are used in. net Program A better way is to use Bulk copy to copy a large amount of data to the database. If the data source is an XML file,