New to netty

[manish_iitg]

Hello,

I have another basic question to ask.
The client that i have created is by default non-blocking. Is their anyway
to make it non- asynchronous. I want the client to wait for the servers
reply and the execution of the code in the client side should not move ahead
till such time. 


Trustin Lee-2 wrote:
> 
> 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/
> 
>  
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> 
> 

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