3. Background threads in the browser

4. handleM
for 8 sec
ouseClick
timerTask for 2
sec
timerTask for 2
sec
timerTask for 2
sec

5. Your favorite JavaScript library
may not work with workers

14. Polling, Long Polling & Streaming

18. GET /PollingStock//PollingStock HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.5)
Gecko/20091102 Firefox/3.5.5
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://www.example.com/PollingStock/
Cookie: showInheritedConstant=false; showInheritedProtectedConstant=false;
showInheritedProperty=false; showInheritedProtectedProperty=false;
showInheritedMethod=false; showInheritedProtectedMethod=false;
showInheritedEvent=false; showInheritedStyle=false; showInheritedEffect=false

19. HTTP/1.x 200 OK
X-Powered-By: Servlet/2.5
Server: Sun Java System Application Server 9.1_02
Content-Type: text/html;charset=UTF-8
Content-Length: 21
Date: Sat, 07 Nov 2009 00:32:46 GMT

20. GET /text HTTP/1.1rn
Upgrade: WebSocketrn
Connection: Upgradern
Host: www.websocket.orgrn
…rn
HTTP/1.1 101 WebSocket Protocol Handshakern
Upgrade: WebSocketrn
Connection: Upgradern …rn
The WebSocket handshake (browser request and server response)
Source: http://www.websocket.org/quantum.html

21. http://www.websocket.org/quantum.html

25. Java
Jetty C++
libwebsocket
s
Ruby
EventMachin
e
.NET
Erlang Python SuperWebSocket
Shirasu pywebsocket
Tornado

30. <section itemscope itemtype="http://data-vocabulary.org/Person">
Hello, my name is
<span itemprop="name">Suresh Balla</span>,
I am a
<span itemprop="title">principal consultant</span>
at the
<span itemprop="affiliation">Neudesic India</span>.
My friends call me
<span itemprop="nickname">Suresh</span>.
You can visit my homepage at
<a href="http://www.SureshBalla.com" itemprop="url">www.SureshBalla.com</a>.
<section itemprop="address" itemscope itemtype="http://data-vocabulary.org/Address">
I live at
<span itemprop="street-address">1234</span>
<span itemprop="locality">White field</span>
<span itemprop="region">Bangalore</span>.
</section>
</section>

31. Developers can test pages containing
Microdata using Google's Rich Snippet
Testing Tool

32. Defines a group of
<section itemscope itemtype="http://data-vocabulary.org/Person">
vocabulary name/pair
Hello, my name is
<span itemprop="name">Suresh Balla</span>,
values
I am a
<span itemprop="title">principal consultant</span>
at the
<span itemprop="affiliation">Neudesic India</span>.
My friends call me
<span itemprop="nickname">Suresh</span>.
You can visit my homepage at
<a href="http://www.SureshBalla.com" itemprop="url">www.SureshBalla.com</a>.
<section itemprop="address" itemscope itemtype="http://data-vocabulary.org/Address">
I live at
<span itemprop="street-address">1234</span>
<span itemprop="locality">White field</span>
<span itemprop="region">Bangalore</span>.
</section>
</section>

33. <section itemscope itemtype="http://data-vocabulary.org/Person"> URL that identifies the
Hello, my name is scope
<span itemprop="name">Suresh Balla</span>,
I am a
<span itemprop="title">principal consultant</span>
at the
<span itemprop="affiliation">Neudesic India</span>.
My friends call me
<span itemprop="nickname">Suresh</span>.
You can visit my homepage at
<a href="http://www.SureshBalla.com" itemprop="url">www.SureshBalla.com</a>.
<section itemprop="address" itemscope itemtype="http://data-vocabulary.org/Address">
I live at
<span itemprop="street-address">1234</span>
<span itemprop="locality">White field</span>
<span itemprop="region">Bangalore</span>.
</section>
</section>

34. <section itemscope itemtype="http://data-vocabulary.org/Person"> Adds a property to
Hello, my name is element
<span itemprop="name">Suresh Balla</span>,
I am a
<span itemprop="title">principal consultant</span>
at the
<span itemprop="affiliation">Neudesic India</span>.
My friends call me
<span itemprop="nickname">Suresh</span>.
You can visit my homepage at
<a href="http://www.SureshBalla.com" itemprop="url">www.SureshBalla.com</a>.
<section itemprop="address" itemscope itemtype="http://data-vocabulary.org/Address">
I live at
<span itemprop="street-address">1234</span>
<span itemprop="locality">White field</span>
<span itemprop="region">Bangalore</span>.
</section>
</section>

35. Element Attribute Containing Value
meta content
audio src
embed src
iframe src
img src
source src
video src
a href
area href
link href
object data
time datetime
All others Text content

38. Suresh.Balla@neudesic.com