zynga pool

Java stack constant pool and java constant pool JavaHeap(Each object contains the corresponding class information, and the [class information is stored in the method area]), and the memory allocated in the heap, there is a virtual machine's automatic garbage collector management, stack memory is only visible to its thread. JavaStackSave some basic data types (int, long, byte, double, float, char, boolean,

Log out of the thread pool at a time and log out of the thread pool at a time. Question: I used timer all the time and suddenly used ThreadPool to register the thread. I found that the thread won't be logged out (% >_ Private AutoResetEvent autoReset = new AutoResetEvent (false );Private RegisteredWaitHandle h; Usage: H = ThreadPool. RegisterWaitForSingleObject (autoReset, ParallelClearLog, null, 100, f

enable multiple threads within a process. But the question comes, why use multithreading? I know that when you start a process, you need to create some memory space, which is the equivalent of a house, we have to work in this House, you can think of a person is equal to a thread, you have 10 people in the house room with 20 people space, normally is not the same, Because we know that the threads and threads can communicate by default (the process is not communication by default, but it can be i

Background: The latest project needs to invoke the HTTP interface, so I intend to use the latest HttpClient client to write a tool class, write well later in the actual application process encountered some problems, because the amount of dataLarge, each processing about 600-700 requests, the average count down to 20 minutes, although the speed is running in the scheduled task, but also unbearable, so with this blog.1. The first thought of the solution is the multi-line Cheng request, but this ha

. NET thread pool technology for multi-task batch processing,. net thread pool for multi-taskI. Introduction to multi-thread technology application scenarios This article also shares with you the real business scenarios that arms has encountered in its actual work. Please follow arms's perspective on how to use the SmartThreadPool thread pool technology based on

Create a data source (Create a database connection pool) and a glassfish connection pool in glassfish 1. Enter http: // localhost: 4848 in the browser to log on to the glassfish Domain Management Console. The default username and password are amin and adminadmin. (You can also right-click the NetBeans service tab -- server -- GlassFishServer -- to view the Domain Management Control Center) 2. Create a dat

Simple use of thread pool, simple use of Thread Pool Create a thread pool with a specified number of threads private static ExecutorService scheduledTaskFactoryExecutor = null;private boolean isCancled = false;private static class ThreadFactoryTest implements ThreadFactory { @ OverridePublic Thread newThread (Runnable r ){Thread thread = new Thread (r );Thread. s

Android thread and thread pool ----- AsyncTask (1) android development art and exploration, asynctask Thread Pool Threads are an important concept in android. In terms of usage, threads are divided into the main thread and sub-thread, the main thread is responsible for page-related, and the sub-thread is responsible for time-consuming operations.In android, besides the Thread itself, there is also AsyncTask

Use jar Packs: Commons-dbcp-1.4.jar, Commons-pool-1.6.jar, Commons-logging-1.1.3.jar, plus JDBC driver for the database, for JAVA6 and above platforms Connection Pooling Management class Copy Code code as follows: Package cn.songxinqiang.samples.commonsdbcp.util; Import java.sql.Connection;Import Java.sql.DatabaseMetaData;Import java.sql.SQLException;Import java.util.Properties; Import Javax.sql.DataSource; Import Org.apache.common

1. The connection pool case package Com.csdn.uil; Import java.io.IOException; Import Java.io.InputStream; Import Java.io.PrintWriter; Import Java.lang.reflect.InvocationHandler; Import Java.lang.reflect.Method; Import Java.lang.reflect.Proxy; Import java.sql.Connection; Import Java.sql.DriverManager; Import java.sql.SQLException; Import java.util.LinkedList; Import java.util.Properties; Import Javax.sql.DataSource; /** * Own a connection

Another project error is reported today: Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and Max pool size was reached. The first response is that the brother wrote datareader and did not close it. This does not start to look for datareader in the whole project. Well, let alone, there are two

Comprehensive reference A. c ++ application performance optimization, Chapter 6th: Memory PoolHttp://www.ibm.com/developerworks/cn/linux/l-cn-ppp/index6.html And B. Design of ARP memory pool. Http://www.cnblogs.com/bangerlee/archive/2011/09/01/2161437.html 1. memblock Typedef struct memblock {uint32_tindex; // sizeuint32_tnfree; // the minimum number of available memory units uint32_tnfirst; // The next smallest available memory unit number struct mem

Reprinted: 1. Problem DescriptionWebProgramIt was very fast at the beginning of Tomcat, but after a while it was found that the speed became very slow.Check log output and find exceptions as follows:Org. Apache. commons. DBCP. sqlnestedexception: cannot get a connection, pool exhausted, cause:Java. util. nosuchelementexception: timeout waiting for idle objectAt the same time, in the sqlserver event probe, it is found that each SQL statement is exec

21st century is the most expensive. Database connection. Database connection is one of the most precious resources in the whole system for the application system with database as the cornerstone of data storage. Database connection pooling is the most important measure to make more efficient use of database connections. It is critical for the performance of a large application system, especially Web applications. Ado.net Data Provider (hereinafter referred to as data Provider) will help us manag

Java Thread Pool usage instructionsThe role of the thread pool:The thread pool function is to limit the number of threads executing in the system.According to the environment of the system, the number of threads can be set automatically or manually to achieve the best performance; less waste of system resources, more caused by the system congestion efficiency is not high. Use the thread

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

Concept of Connection Pool 1) The connection pool is a process Multiple connections are stored and managed in one process. This process saves all connections. when we open the connection, if there are unused connections available, this connection is returned. If all connections in the pool are used up, a new connection is created and saved to the connection

I have seen an introduction to the memory pool technology, which has benefited a lot. Original post address: http://www.ibm.com/developerworks/cn/linux/l-cn-ppp/index6.html 6.1 Principle of Performance Optimization for custom memory pools As mentioned above, the reader has learned the difference between "Heap" and "stack. In programming practice, it is inevitable to use a large amount of memory on the stack. For example, to maintain the data structure

In network programming, it is proposed to put sockets into the pool so that multiple threads can share the conenction of these sockets) The DB connection pool is an implementation based on the connection pool. The connection pool is a technology used by the client. For example, c3p0 and DBCP both use applications as cl

Java Multithreading Series--"Juc thread pool" 02 Thread pool principle (i)Threadpoolexecutor IntroductionThreadpoolexecutor is a thread pool class. For the thread pool, it can be popularly understood as "a collection of threads that hold a certain number of threads." The thread poo