New to netty

[Trustin Lee]

Thanks for the suggestion.  Let me come up with some wiki space so that
users can share their code.

On Mon, Dec 08, 2008 at 09:54:54PM +0900, manish_iitg wrote:
> Thanks for the reply . I will surely try out the execution handler. I am
> writing a complex application on Netty and will keep posting my doubts here,
> I hope they are answered here. Also will surely give a feedback after i have
> used Netty to some extent. Till now i found netty great. The basics are
> pretty easy to learn. The quick start guide and documentation are excellent.
> If only there were more examples on the complex implementation of netty,
> then it would be great. 
> 
> There should be an option for netty users to post their codes so that rest
> of the people can see how people implement netty on various problems.
> 
> Thanks for your reply again, will try out your suggestion.
> 
> Trustin Lee-2 wrote:
>> 
>> Hello,
>> 
>> On Mon, Dec 08, 2008 at 01:37:40AM +0900, manish_iitg wrote:
>>> 
>>> Hello,
>>> 
>>> I am new to netty. This is my first time with any NIO Frameworks. After
>>> searching on the internet, i found out netty was the best nio framework
>>> so
>>> decide to build my application on netty. 
>> 
>> Thanks for choosing Netty first of all, and I'd love to hear your feed
>> back!
>> 
>>> I am creating a application, in which my netty server need to query a
>>> mysql
>>> database depending upon the request from the client. My client is a swing
>>> application, and it send an request object to the netty server. I am
>>> using
>>> ObjectEncoder and ObjectDecoder for encoding and decoding the request
>>> object. On the server side, i have written a simple handler, and in the
>>> the
>>> messageRecieved function i query the database according to the request
>>> object and reply back. In database querry in is simple select function
>>> which
>>> is called from a static class. 
>>> 
>>> I want to know weather this architecture is good enough, if the number of
>>> request increase. Also what would be the best architecture for such kind
>>> of
>>> application.
>> 
>> You are pretty close to prefection IMHO.  One left thing I can think of
>> is to add an ExecutionHandler (org.jboss.netty.handler.execution) to the
>> pipline.  By adding an ExecutionHandler which wraps a OrderedMemoryAware-
>> ThreadPool (org.jboss.netty.handler.execution), you can make your
>> handler to process the events in a different thread pool than the I/O
>> thread pool.  Because you are performing a time-consuming task which
>> might block the I/O thread, it is recommended to add an ExecutorHandler
>> somewhere between the head of the pipeline and your handler that queries
>> MySQL.
>> 
>> The following is a simple example that adds an ExecutorHandler as
>> explained above:
>> 
>>   bootstrap.getPipeline().addLast("executor", new ExecutionHandler(
>>       new MemoryAwareThreadPoolExecutor(16, 0, 0)));
>>   bootstrap.getPipeline().addLast("handler", handler);
 
-- 
Trustin Lee, Principal Software Engineer, JBoss, a division of Red Hat
--
what we call human nature in actuality is human habit
--
http://gleamynode.net/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 197 bytes
Desc: not available
Url : http://lists.jboss.org/pipermail/netty-users/attachments/20081209/e8ccc6aa/attachment.bin