Java在某些方面的性能低下使人不自觉地想到了它的主要竞争对手C++,两者的性能比较也就在所难免。仅对为对象分配内存这一性能测试中,由于Java要为对象初始化一些方便垃圾收集时的附加信息,以及两种语言本身的结构差异,Java处于了明显的下风。下表列出了Java在不同JVM中为对象分配内存时所花费的时间与C++的比较结果: ...
Java在某些方面的性能低下使人不自觉地想到了它的主要竞争对手C++,两者的性能比较也就在所难免。仅对为对象分配内存这一性能测试中,由于Java要为对象初始化一些方便垃圾收集时的附加信息,以及两种语言本身的结构差异,Java处于了明显的下风。下表列出了Java在不同JVM中为对象分配内存时所花费的时间与C++的比较结果: c...
}// 连接池@BeanpublicSftpPoolsftpPool(SftpFactory sftpFactory){returnnewSftpPool(sftpFactory); }// 辅助类@BeanpublicSftpUtilsftpUtil(SftpPool sftpPool){returnnewSftpUtil(sftpPool); } } SftpProperties.java package com.vipsoft.sftp.config;importcom.jcraft.jsch.ChannelSftp;importorg.apache.commons....
它提供了三种对象池:GenericKeyedObjectPool,SoftReferenceObjectPool和GenericObjectPool,其中GenericObjectPool是我们最常用的对象池,内部实现也最复杂。 Java BasePooledObjectFactory 对象池化技术 通常一个对象创建、销毁非常耗时的时候,我们不会频繁的创建和销毁它,而是考虑复用。复用对象的一种做法就是对象池,将创建好...
java 对象池(GenericObjectPool)优化——commons-pool-1.6.jar,1、背景:某应用1.0性能测试服务强依赖于mysql,许多接口都会请求mysql对mysql的请求用GenericObjectPool的连接池来进行管理,设置如下:(maxActive=100)connectionPool.setMaxActive(maxActive);connection
Stormpot is an object pooling library for Java. Use it to recycle objects that are expensive to create. The library will take care of creating and destroying your objects in the background. Stormpot is very mature, is used in production, and has done hundreds of trillions [1] claim-releas...
Object pooling is an important consideration for Java Database Connectivity (JDBC) and performance. Since many objects used in JDBC are expensive to create such as Connection, Statement, and ResultSet objects, significant performance benefits can be achi
The object evaluation interface provides methods to help the Object Pool Manager reserve objects and return them to a pool. This Netscape Application Server-defined interface is named IGXObjectEvaluation in C++ extensions, or IJavaObjectEvaluation in Java extensions. Each class that contains pooled-...
apache commons pool w/ some synchronization changes - commons-pool/src/java/org/apache/commons/pool/impl/GenericKeyedObjectPool.java at master · mariusae/commons-pool
当一个代码的工匠回首往事时,不因虚度年华而悔恨,也不因碌碌无为而羞愧,这样,当他老的时候,可以很自豪告诉世人,我曾经将代码注入生命去打造互联网的浪潮之巅,那是个很疯狂的时代,我在一波波的浪潮上留下... « 上一篇 GenericObjectPool参数解析