Ehcache与Memcache的区别

待我称王封你为后i 2022-06-10 08:48 180阅读 0赞

ehcache是纯[Java][]编写的，通信是通过RMI方式，适用于基于java技术的项目。  
memcached服务器端是c编写的，客户端有多个语言的实现，如c，[PHP][](淘宝，sina等各大门户网站)，[Python][](豆瓣网)， java(Xmemcached，spymemcached)。memcached服务器端是使用文本或者二进制通信的。

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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> <strong style="margin:0px; padding:0px; outline:0px; border:0px currentColor; line-height:24px">项目</strong></td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> <strong style="margin:0px; padding:0px; outline:0px; border:0px currentColor; line-height:24px">Memcache</strong></td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> <strong style="margin:0px; padding:0px; outline:0px; border:0px currentColor; line-height:24px">Ehcache</strong></td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 分布式</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 不完全，集群默认不实现</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 支持</td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 集群</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 可通过客户端实现</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 支持（默认是异步同步）</td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 持久化</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 可通过第三方应用实现，如sina研发的memcachedb，将cache的数据保存到[url=]Berkerly DB[/url]</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 支持。持久化到本地硬盘，生成一个.data和.index文件。cache初始化时会自动查找这两个文件，将数据放入cache</td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 效率</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 高</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 高于Memcache</td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 容灾</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 可通过客户端实现。</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 支持</td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 缓存数据方式</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 缓存在memcached server向系统申请的内存中</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 可以缓存在内存（JVM中），也可以缓存在硬盘。通过CacheManager管理cache。多个CacheManager可配置在一个JVM内，CacheManager可管理多个cache。</td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 缓存过期移除策略</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> LRU</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> LRU(默认)，FIFO，LFU</td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 缺点</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 功能不完善，相对于Ehcache效率低</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 只适用于java体系，只能用java编写客户端</td> 
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   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 优点</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 简洁，灵活，所有支持socket的语言都能编写其客户端</td> 
   <td style="margin:0px; padding:6px; outline:0px; border:1px solid rgb(51,153,102); line-height:24px"> 效率高。功能强大。</td> 
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[Python]: http://lib.csdn.net/base/python