simple pool

() return }select { case p.res "resource released into the pool" ) default : Log. Println ( "resource pool full, release this resource" ) R.close ()}} Releasing resources essentially sends the resources back to the buffer channel, which is simple, but for a more secure implementation of this method, we use mutexes to ensure closed the sec

Many DBAs are confused about how to use nonpage pool and paged pool. Find a document and translate it. From: http://blogs.technet.com/ B /markrussinovich/archive/2009/03/26/3211216.aspx Nonpaged pool(Non-Paging pool) The kernel and device drivers use nonpaged pool to store d

. Although this can improve the performance of subsequent database requests of a single user, the user cannot use connections established by other users. In this wayEach user generates at least one connection to the database server. This has side effects on the structure of a specific web application because developers need to measure security and audit requirements. Because many databases generate pool fragments XuMultiple InternetService providers h

JDBC: database connection pool, jdbc database connection pool Required tools Commons-pool2-2.3.jar: dependency library implemented by connection pool Commons-dbcp2-2.0.1.jar: Implementation of Connection Pool C3p0-0.9.2.1.jar If Method 'initializationerror' not found occurs when c3p0 is used, opening the test class, an

ObjectiveThreads are scarce resources, if created without restriction, will not only consume system resources, but also reduce the stability of the system, reasonable use of thread pool to uniform distribution, tuning and monitoring, there are the following benefits1. Reduce resource consumption2. Improve response speed3, improve the manageability of threadsThe executor framework, introduced in java1.5, decouples the submission and execution of tasks

Introduction The Python Standard Library provides the threading and multiprocessing modules for us to write the corresponding multi-threaded multi-process code. However, when the project reaches a certain scale, frequent creation and destruction of processes or threads consume a lot of resources, at this time, we need to write our own thread pool process pool to change the space for time. However, from Pyth

First, about the Concurrent.futures module　　　　The Python standard library provides us with the threading and multiprocessing modules to write the corresponding multithreaded/multi-process code, but when the project reaches a certain scale, frequent creation/destruction of processes or threads is very resource intensive, and this time we will write our own thread pool/ Process pool, with space to change time

"Restricting the number of connections is the standard for the number of IIS connections exposed by the virtual host, and if the number of IIS connections purchased is 50, then we have to consider the content framework and volume of the siteIf there are enough pictures of the website, pop-up window random (may even time selection box, simple condition filter box also with pop-up new window), plus the forced to open a new page to browse content, then o

绝，而默认的拒绝策略是抛一个RejectedExecutionException异常The above parameters are relatively simple to understand, but workqueue this task queue to explain again, it is a Blockingqueue object, and the generic is to limit it to store runnable object, just above said, Different thread pool its task queue implementation is certainly not the same, so, to ensure that different thread pool