r s pool

Abstract This article introduces the working principle of the JDBC-based database connection pool, describes the transaction processing and multi-database servers of the connection pool technology. Various key technologies propose an efficient connection pool management policy. At last, the specific implementation process of the database connection

1. For the ASP. NET database connection pool, you can use a group of name-value pairs to configure the connection pool as a link string. For example, you can configure whether the pool is valid (which is valid by default). The maximum and minimum capacity of the pool is used for the time when the queued requests that o

without consideration. For example, too many connections may also cause memory leakage and server crash. How database connection pool works 1. Basic Concepts and Principles From the above analysis, we can see that the root cause of the problem is the inefficient management of database connection resources. We know that, There is a well-known design pattern for shared resources: Resource Pool ). This mode i

Definition What is a thread pool? To put it simply, the thread pool is a bunch of threads that have already been created. Initially, they are all in the idle waiting state. When a new task needs to be processed, take an idle waiting thread from this pool to process the task. When the processing is complete, the thread is put back into the

I 've been watching nginx over the past few days and found that pool exists in all the places where I have memory application. Let's take a closer look. The original pool type is ngx_pool_t, which is used by nginx for memory management, so I decided to look at his implementation. 1 nginx memory pool-related struct Ngx_pool_t is defined in core/ngx_palloc.h ngx_pa

1. Introduction to shared pool:The location, parts, and functions of the Shared Pool;Ii. Set and view the shared pool size:In 9i, we use the Shared_pool_size parameter to set the size of the Shared Pool. Let's talk about the setting in 10 Gb. In 9i or 10g, the value of Shared_pool_size does not necessarily represent the true size of the Shared

In Java development, sometimes encountered multi-threading development, directly using the thread operation, the performance and maintenance of the program is a problem, using the Java provided by the thread pool to operate can be a good solution to the problem.The disadvantage of new threadPerform an asynchronous task are you still just following the new thread?New Thread (New Runnable () { @Override public void Run () { //todo auto-ge

Transferred from: http://blog.csdn.net/lmh12506/article/details/7753952Some time ago on GitHub opened a library, ready to implement their own thread pool, because the change of work, has not been achieved, refer to this article is ready to start to achieve.When do I need to create a thread pool? Simply put, if an application needs to create and destroy threads frequently, and the task executes in a very sho

1. Why does it take a lot of time to create and initialize new objects using the object pool technology. In the initialization of such objects, if you rely on rpc Remote calls to create objects, such as connecting to remote service resources through socket or http, the most typical is the database service and RemoteQueue ), establish a connection 1. Why does it take a lot of time to create and initialize new objects using the object

Tags: des blog http os using IO strong file forTransferred from: http://blog.csdn.net/wyzxg/article/details/7700394MySQL official website configuration description Address: http://dev.mysql.com/doc/refman/5.5/en/innodb-parameters.htmlOther references:"High performance MySQL"-8.4.5 innodb buffer poolMySQL Technology insider InnoDB Storage Engine (second edition content updated)-2.3 InnoDB Architecture##############################################The book is to explain the background thread first,

Label:InnoDB maintains a cache of data and index information to the memory of the storage area called buffer pool, which caches the most recently accessed data. By configuring the parameters of each buffer pool, we can significantly improve the performance of MySQL. InnoDB buffer pool is based on the LRU algorithm, we can easily understand the following LRU algor

Introducing the drawbacks of new thread and the use of Java four thread pools are also applicable to Android. This article is a basic article and will share some of the advanced features of the thread pool later.1. The disadvantage of new threadPerform an asynchronous task are you still just following the new thread?New Thread (New Runnable () {@Overridepublic void Run () {//TODO auto-generated Method stub}}). Start ();Then you are out too much, and t