Install Memcached Server - Windows

Memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

To install Memcached Server, follow these steps:

1. Download the Memcached server. For more information, refer to https://memcached.org/
2. Extract the downloaded archive file.
3. From the command prompt, go to the memcached  directory.
4. Run the following command:

   memcached.exe  -d install

   For example:

   c:/memcached/memcached.exe  -d install

5. Start the server from the Services or by running one of the following commands:

   c:/memcached/memcached.exe -d  start

   net start memcached Server

   Now your memcached server is installed and is listening on port 11211.

6. By default, the server is set to 64MB memory limit, which is too small. To add the extra memory allocation, edit the registry to add the information. To increase the default memory size, in the Windows Run windows, type Regedit to display the Registry Editor window:

   

7. In the Registry Editor window, go to the following key:

   HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/memcached Server.

8. In the key, change the ImagePath entry with the following:

   C:/memcached/memcached.exe -d runservice -m 2048

   This way you will use 512 MB memory limit for your server.

   If you now go back to the service section you should now see memcached installed.

   

   If you do not see the expected result, restart your computer. You now have memcached running.

Install Memcached Server - Linux

libevent (memcached dependency) - Linux

The libevent API provides a mechanism to execute a callback function when a specific event occurs on a file descriptor or after a timeout has been reached. Furthermore, libevent also support callbacks due to signals or regular timeouts.

libevent is meant to replace the event loop found in event driven network servers. An application just needs to call event_dispatch() and then add or remove events dynamically without having to change the event loop. For more details, refer to http://libevent.org/

To install libevent (memcached dependency) on Linux, follow these steps:

1. First, check whether libevent is installed on your computer. To check, type the following command in your Linux terminal:

   whereis libevent

2. If you do not find libevent on your system, download and install libevent-1.4.8-stable.tar.gz. For more information, refer to http://libevent.org/
3. Extract the downloaded archive file.
4. In your Linux terminal, type the following command:

   cd libevent-1.4.8-stable
   
   ./configure
   make
   make install

5. Type the following command to create a symlink to libevent.

   ln -s /usr/local/lib/libevent-1.4.so.2 /usr/lib

Now that you have installed the dependencies, install the memcahced server.

Memcached Server - Linux

To install Memcached Server on Linux, follow these steps:

1. Download the Memcached server. For more information, refer to https://memcached.org/
2. Extract the downloaded archive file.
3. Open the Linux terminal.
4. Go to the ../memcache directory.
5. Run the following command:

   tar xfz memcached-1.2.6.tar.gz
   cd memcached-1.2.6
   ./configure
   make
   make install
   memcached -d -m 1024 -u root -l 127.0.0.1 -p 11211

   IMPORTANT: Run Memcached as a daemon (d = daemon, m = memory, u = user, l = IP to listen to, p = port)