Installing Memcached for Faveo

Memcached

Introduction:

Memcached is free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering.

Debian and Derivatives

Debian and Derivates include:

a. Debian 11 (Bullseye)

b. Debian 12 (Bookworm)

c. Ubuntu 20.04 (Focal Fosa)

d. Ubuntu 22.04 (Jammy Jellyfish)

Installing PHP extension

apt-get install -y libapache2-mod-php8.1 php8.1-memcached

Installing Memcached

sudo apt update

sudo apt-get install -y memcached libmemcached-tools

sudo systemctl start memcached
sudo systemctl enable memcached

sudo systemctl restart apache2

Verify that Memcached is currently bound to the local IPv4 127.0.0.1 interface and listening only for TCP connections by using the ss command:

sudo ss -plunt

You should receive output like the following:

Output
Netid      State       Recv-Q      Send-Q           Local Address:Port             Peer Address:Port      Process                                         
. . .
tcp        LISTEN      0           1024                 127.0.0.1:11211                 0.0.0.0:*          users:(("memcached",pid=8889,fd=26))
. . .

Adding an Authenticated User

You will need to install the sasl2-bin package, which contains administrative programs for the SASL (Simple Authentication and Security Layer) user database. This tool will allow you to create an authenticated user or users. Run the following command to install it:

sudo apt install sasl2-bin

Next, create the directory and file that Memcached will check for its SASL configuration settings using the mkdir command:

sudo mkdir -p /etc/sasl2

Now create the SASL configuration file using nano or your preferred editor:

sudo nano /etc/sasl2/memcached.conf

Add the following lines:

log_level: 5
mech_list: plain
sasldb_path: /etc/sasl2/memcached-sasldb2

Now you will create a SASL database with user credentials. You’ll use the saslpasswd2 command with the -c flag to create a new user entry in the SASL database.

sudo saslpasswd2 -a memcached -c -f /etc/sasl2/memcached-sasldb2 faveo

Finally, give the memcache user and group ownership over the SASL database with the following chown command:

sudo chown memcache:memcache /etc/sasl2/memcached-sasldb2

Restart the Memcached service:

sudo systemctl restart memcached

2. Red Hat and Derivatives

Red Hat and Derivatives include:

a. Alma 8

b. Alma 9

c. Rocky 8

d. Rocky 9

e. RHEL 8

f. RHEL 9

Installing PHP extension

yum -y install php-pecl-memcached php-pecl-memcache -y

Installing Memcached

sudo dnf update -y

sudo dnf install memcached -y

sudo yum groupinstall 'Development Tools'

wget https://launchpad.net/libmemcached/1.0/1.0.18/+download/libmemcached-1.0.18.tar.gz

tar -zxvf libmemcached-1.0.18.tar.gz

cd libmemcached-1.0.18

./configure

nano clients/memflush.cc

Replace all the occurrences of opt_servers == false

// Change this line:
// if (opt_servers == false)

// To:
if (!opt_servers)

make

sudo make install

sudo systemctl start memcached
sudo systemctl enable memcached

systemctl restart httpd.service

Verify that Memcached is currently bound to the local IPv4 127.0.0.1 interface and listening only for TCP connections by using the ss command:

sudo ss -plunt

You should receive output like the following:

Output
Netid      State       Recv-Q      Send-Q           Local Address:Port             Peer Address:Port      Process                                         
. . .
tcp        LISTEN      0           1024                 127.0.0.1:11211                 0.0.0.0:*          users:(("memcached",pid=8889,fd=26))
. . .

Adding an Authenticated User

Now we can download two packages that will allow us to work with the Cyrus SASL Library and its authentication mechanisms, including plugins that support PLAIN authentication schemes. These packages, cyrus-sasl-devel and cyrus-sasl-plain, will allow us to create and authenticate our user. Install the packages by typing:

sudo yum install cyrus-sasl-devel cyrus-sasl-plain

Next, we will create the directory and file that Memcached will check for its SASL configuration settings:

sudo mkdir -p /etc/sasl2

sudo nano /etc/sasl2/memcached.conf

Add the following to the SASL configuration file:

mech_list: plain
log_level: 5
sasldb_path: /etc/sasl2/memcached-sasldb2

Now you will create a SASL database with user credentials. You’ll use the saslpasswd2 command with the -c flag to create a new user entry in the SASL database.

sudo saslpasswd2 -a memcached -c -f /etc/sasl2/memcached-sasldb2 faveo

Finally, give the memcache user and group ownership over the SASL database with the following chown command:

sudo chown memcached:memcached /etc/sasl2/memcached-sasldb2

Restart the Memcached service:

sudo systemctl restart memcached

3. Windows Server

Installing PHP extension

Click Here to download PHP 8.1 x64 extension zip file (NTS or TS depending on the PHP type) for Memcached.

  • Unzip the downloaded zip file (php_memcached-3.2.0rc2-8.1-nts-vs16-x64.zip file or php_memcached-3.2.0.8.1-ts-vs16-x64.zip file).

  • Copy the libmemcached.dll file from the extracted zip content and paste it in C:\php8.1\ext. (C:\php\ext incase of Apache WebServer).

  • Also copy php_memcached.dll and libhashkit.dll and paste it in C:\windows.

  • Now enable php memcached extension in php.ini configuration located in C:\php8.1. (C:\php incase of Apache WebServer).

extension=php_memcached
  • Now restart the IIS or Apache

Installing Memcached

Click Here to download the stable version of Memcached for windows Server.

  • Unzip it in some hard drive folder. For example C:\memcached

  • There will be memcached.exe file in the unzipped folder.

  • Open a command prompt (need to be opened as administrator).

Run the below command to install to install Memcached.

c:\memcached\memcached.exe -d install

For start and stop run following command line

To Start

c:\memcached\memcached.exe -d start

To Stop

c:\memcached\memcached.exe -d stop

To check Status

tasklist | findstr "memcached.exe"

Updated: