Lets see how facebook search is so fast


    

Some days before i came across a very well known website called facebook. And i was always wondering how can such a heavily loaded website be so seamlessly fast.

After a continuous google search, i found that they use AJAX and JQuery extensively with differnet caching technologies along with the following latest technologies.

1. Bigpipe
2. Comet (programming) or “Reverse Ajax”

I have implemented a simple reverse ajax in my website afriend.in @ the search portion. You can mark a remarkable change in search time after implementing the same.

The trick goes like this

a) Load a static page first
b) Pull the data as soon as the page loads using ajax into a hidden div
c) Use jQuery to organise the data for perfect user interactivity

 

a) Lets create our page layout div first

<DIV id=main>
<H1>Facebook type instant search engine - super speed
</H1>
Filter friends list : <INPUT id=filter>
<DIV id=container>
<DIV>
<UL>
<?php
while($row=mysql_fetch_array($sql_res))
{
$username=$row['username'];

?>
<LI>
<DIV>
<DIV><?=$username?></DIV></DIV></LI>
<?php
}

?>
</UL></DIV></DIV></DIV>

b) We will proceed now by adding jQuery and instant search script and some style attributes to the page

<SCRIPT src="jquery.js"></SCRIPT>

<SCRIPT src="instant-search.js"></SCRIPT><STYLE>BODY {
FONT-WEIGHT: 300; FONT-SIZE: 16px; MARGIN: 0px 10%; COLOR: #333; FONT-STYLE: normal; FONT-FAMILY: 'Helvetica Neue', Helvetica, Arial, sans-serif
}
.name SPAN {
BACKGROUND: #fbffc6
}
UL {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
UL LI {
BORDER-RIGHT: #ddd 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #ddd 1px solid; PADDING-LEFT: 5px; FONT-SIZE: 20px; BACKGROUND: #eee; FLOAT: left; PADDING-BOTTOM: 5px; MARGIN: 3px; BORDER-LEFT: #ddd 1px solid; WIDTH: 150px; LINE-HEIGHT: 70px; PADDING-TOP: 5px; BORDER-BOTTOM: #ddd 1px solid; LIST-STYLE-TYPE: none; HEIGHT: 70px; TEXT-ALIGN: center
}
#container {
BORDER-RIGHT: #b9b9b9 1px solid; BORDER-TOP: #b9b9b9 1px solid; MARGIN-TOP: 20px; BORDER-LEFT: #b9b9b9 1px solid; WIDTH: 100%; BORDER-BOTTOM: #b9b9b9 1px solid; HEIGHT: 440px; webkit-box-shadow: 0 0 15px #aaa; moz-box-shadow: 0 0 15px #aaa; box-shadow: 0 0 15px #aaa
}
#container .content {
OVERFLOW: auto; HEIGHT: 440px
}
#main {
MARGIN: 0px auto; WIDTH: 100%;
}
INPUT {
BORDER-RIGHT: #ddd 1px solid; BORDER-TOP: #ddd 1px solid; FONT-SIZE: 20px; BORDER-LEFT: #ddd 1px solid; BORDER-BOTTOM: #ddd 1px solid
}
A {
COLOR: #31499c; TEXT-DECORATION: none
}
H1 {
FONT-WEIGHT: normal; TEXT-ALIGN: center
}
</STYLE>

4 thoughts on “Lets see how facebook search is so fast

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