flyinweb's blog

Apache HTTP Server Version 2.2 文档

第一部分 应用篇 -- 利用Tokyo Tyrant构建兼容Memcached协议、支持故障转移、高并发的分布式key-value持久存储系统

Tokyo Cabinet 是日本人 平林幹雄 开发的一款 DBM 数据库，该数据库读写非常快，哈希模式写入100万条数据只需0.643秒，读取100万条数据只需0.773秒，是 Berkeley DB 等 DBM 的几倍。

Tokyo Tyrant 是由同一作者开发的 Tokyo Cabinet 数据库网络接口。它拥有Memcached兼容协议，也可以通过HTTP协议进行数据交换。

　　Tokyo Tyrant 加上 Tokyo Cabinet，构成了一款支持高并发的分布式持久存储系统，对任何原有Memcached客户端来讲，可以将Tokyo Tyrant看成是一个Memcached，但是，它的数据是可以持久存储的。这一点，跟新浪的Memcachedb性质一样。

Name-Based VirtualHosts and SSL

As a rule, it is impossible to host more than one SSL virtual host on the same IP address and port. This is because Apache needs to know the name of the host in order to choose the correct certificate to setup the encryption layer. But the name of the host being requested is contained only in the HTTP request headers, which are part of the encrypted content. It is therefore not available until after the encryption is already negotiated. This means that the correct certificate cannot be selected, and clients will receive certificate mismatch warnings and be vulnerable to man-in-the-middle attacks.

启用 apache 的 mod_ssl 之后需要有证书才能正常运作。写了个脚本来操作。首先要确定机器上已经有 openssl 。

Windows Sidebar
There are a number of cool gadgets for the Windows Sidebar that are useful on a server, so I really wanted to get the sidebar working on my Windows Server 2008 boxes. The solution is as follows.
1.Copy the "Windows Sidebar" folder from a Windows Vista SP1 installations Program Files folder that is the same architecture as the Windows Server 2008 box you intend to enable Windows Sidebar on. (i.e., if I'm running Windows Server 2008 64-bit, then I need to copy from a 64-bit Windows Vista SP1 installation.)
2.Copy the "Windows Sidebar" copy into the Program Files folder of the Windows Server 2008 installation. (If 64-bit Windows Server 2008, copy to the "Program Files" folder and NOT the "Program Files (x86)" folder.)
3.Run the following commands from a prompt with administrative credentials
o Regsvr32 atl.dll (如果引组件未注册，在注册下面的组件时，可能会出现类似错误：模块“C:\Program Files\windows sidebar\sbdrop.dll”已加载，但对 DllRegisterServer 的调用失败，错误代码为 0x8007007e。)
o regsvr32 "C:\Program Files\Windows Sidebar\sbdrop.dll"
o regsvr32 "C:\Program Files\Windows Sidebar\wlsrvc.dll"
o "C:\Program Files\Windows Sidebar\sidebar.exe" /RegServer
4.Copy the content of the Sidebar registry area from your Vista box to the 2008 box (HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Sidebar). The registry content is the same for 32-bit and 64-bit, so you can just paste the following into sidebar.reg and execute (by double clicking) to save any copying between machines.

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Sidebar]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Sidebar\Compatibility]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Sidebar\Settings]
"SidebarDockedPartsOrder"="0x1,0x2,0x3,0x4

5.We can now launch sidebar with the "C:\Program Files\Windows Sidebar\sidebar.exe" command.
6.Sidebar will launch, and now access the Properties of Sidebar (right click on a blank area of sidebar and select Properties) and check the "State Sidebar when Windows starts" option.

Adding Vista Sidebar and Aero to Windows Server 2008 Desktop

Do the following steps in your target Windows Server 2008 x64 box.

To get the sidebar,

1. From a Vista SP1 x64, copy in the content of C:\Program Files\Windows Sidebar. And place the folder in the same location.
2. Run sidebar.exe /regserver
3. Register (regsvr32) the 2 sidebar dlls, sbdrop.dll and wlsrvc.dll
4. Clone the sidebar registry settings of the Vista box, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Sidebar\Settings, to the target Windows Server 2008 registry.
5. Run C:\Program Files\Windows Sidebar\Sidebar.exe to bring up the sidebar and set the properties to start Siderbar when Windows starts.

注：以下安装测试在Cent OS 5.x(5.4/5.6/5.8)x86、x86_64下环境测试通过

症状：

Cent OS安装httpd-2.4.2时出错：

configure: error: APR not found

背景：

Compiling and Installing Requirements

#Rename-FileExtension.ps1
Function Rename-FileExtension($path,$oldExtension, $newExtension)
{
 Get-ChildItem -path $path -Filter $oldExtension |
 Foreach-Object {
   if($_.extension.length -gt 0)
    {
      $baseName = $_.name.remove($_.name.length - $_.extension.length)
    }
  ELSE
    { $baseName = $_.name }
 Rename-Item -Path $_.fullname -newname ($baseName + $newExtension)
 }
} #end functionp
Rename-FileExtension -path "C:\download\" -oldExtension "*.php" -newExtension ".htm"