Cài đặt Memcache thôi nào(sever linux nhé )
1 Preliminary Note Với vbb thì nó thường mặc định đường dẫn là :
Code:
/var/www/www.example.com/web/forums
quan trọng cần sử dụng là file config nhé. Nó sẽ nằm ở
/var/www/www.example.com/web/forums/includes.
memcached and the PHP5 memcache module are available as packages for Debian Etch, so we can install them as follows:
Code:
apt-get install memcached php5-memcache
After the installation, memcached should already be running. You can check that by typing
Code:
netstat -tap | grep memcached
server1:~# netstat -tap | grep memcached
tcp 0 0 *:11211 *:* LISTEN 3053/memcached
server1:~#
As you see, memcached is running on port 11211 (the default memcached port), and it's listening on all interfaces on the system. As memcached has no built-in authentication mechanisms (in order to not give up on speed), this means that anyone can connect to it from outside and use it. To avoid this, you can either close port 11211 in your firewall, or you configure memcached to listen on localhost only. I will use the latter method here.
To do this, open the memcached configuration which is stored in /etc/memcached.conf:
Code:
vi /etc/memcached.conf
Add -l 127.0.0.1 to the configuration (you can also adjust the other settings if you like - the file contains explanations for each setting):
Code:
[...]
# Specify which IP address to listen on. The default is to listen on all IP addresses
# This parameter is one of the only security measures that memcached has, so make sure
# it's listening on a firewalled interface.
# -l 12.34.56.78
-l 127.0.0.1
[...]
Restart memcached...
Code:
/etc/init.d/memcached restart
... and run
Code:
netstat -tap | grep memcached
again. As you see, memcached is now listening on localhost only:
server1:~# netstat -tap | grep memcached
tcp 0 0 localhost.localdo:11211 *:* LISTEN 3092/memcached
server1:~#
Then open /etc/php5/apache2/php.ini...
Code:
vi /etc/php5/apache2/php.ini
... and make sure that you have something like this in it (probably at the end):
Code:
[...]
extension=memcache.so
[memcache]
memcache.dbpath=/var/lib/memcache
memcache.maxreclevel=0
memcache.maxfiles=0
memcache.archivememlim=0
memcache.maxfilesize=0
memcache.maxratio=0
Afterwards, we restart Apache so that our new PHP configuration takes effect:
Code:
/etc/init.d/apache2 restart
3 Configure vBulletinNext open vBulletin's config.php file:
Code:
cd /var/www/www.example.com/web/forums/includes/
vi config.php
You should find something like this in it:
Code:
[...]
/*
$config['Datastore']['class'] = 'vB_Datastore_Memcached';
$i = 0;
// server thứ nhất
$i++;
$config['Misc']['memcacheserver'][$i] = '127.0.0.1';
$config['Misc']['memcacheport'][$i] = 11211;
$config['Misc']['memcachepersistent'][$i] = true;
$config['Misc']['memcacheweight'][$i] = 1;
$config['Misc']['memcachetimeout'][$i] = 1;
$config['Misc']['memcacheretry_interval'][$i] = 15;
*/
[...]
The /* ... */ means the section is commented out. Remove /* and */ from that section and save the file:
Code:
[...]
$config['Datastore']['class'] = 'vB_Datastore_Memcached';
$i = 0;
// sever thứ 2 ... và thứ n đều như vậy.
$i++;
$config['Misc']['memcacheserver'][$i] = '127.0.0.1';
$config['Misc']['memcacheport'][$i] = 11211;
$config['Misc']['memcachepersistent'][$i] = true;
$config['Misc']['memcacheweight'][$i] = 1;
$config['Misc']['memcachetimeout'][$i] = 1;
$config['Misc']['memcacheretry_interval'][$i] = 15;
[...]
(If your memcached is running on another server or port, you must adjust these settings!)
That's it. Your vBulletin is now using memcached!
4 Links website đã dùng và tham khảo cho bài viết nàyPhần cài đặt phải để tiếng anh nhá. Vì setup bằng lệnh trong linux dịch ra thì nó lủng củng lắm. Chúc mọi ngườ thành công nhé.
Share đoạn code để test xem memcached đã hoạt động tốt chưa nhé.
Mã PHP:
<?
$memcache = new Memcache;
$memcache->connect('localhost', 11211) or die ("Could not connect");
echo "Server's version: {$memcache->getVersion()}
";
$tmp = new stdClass;
$tmp->string_attribute = 'testing';
$tmp->string_attribute = 123;
$memcache->set('key', $tmp, false, 10) or die ("Failed to save temporary object at memcache server");
echo "Data from the cache:
\n";
print_r($memcache->get('key'));
?>Sưu tầm
. Mô hình truy vấn dữ liệu (data) từ CPU tới các loại bộ nhớ có dạng sau:
.
Trước tiên, cũng như mọi lần, tôi cần một ấm trà hoặc một cốc cafe đã 