Is Netty what I'm searching for?

["이희승 (Trustin Lee)"]

Thanks everyone for evagelizing Netty.  Nothing much to add from me!  :)

Best regards,
Trustin

On 06/17/2010 04:57 AM, Shlomi Marco wrote:
> I can offer my two cents based on my own private view and experience
> with Netty:
> 
> I work for a hedge fund who does extensive algo-trading and high
> frequency trading.
> We're anal-retentive when it comes to performance and everything is
> measured in sub-milliseconds latencies.
> 
> Netty has played a significant role in our infrastructure:
> We're using Netty as our communication framework. we wrapped it with our
> own manager who relays data back and forth between the different stocks
> market and the front ends.
> As for passing messages, we find the combination of google
> protocol-buffer and netty valuable to no extent, certainly when you
> consider that our server is Java based, and clients are (most often) C#.
> 
> While I'm aware there are other frame work, Netty really gives a sense
> of "look-no-further".
> 
> To sum, I can say the following:
> 1. Netty is super-fast. It's fast to the point that I'm more concern
> about programmers doing something wrong then worrying about networking
> framework.
> In precises measurements not once we've identified Netty as a bottleneck.
> 
> 2. Protocol-buffer + Netty are your best friend providing you design
> your protocol correctly.
> 
> 3. Netty scales.
> 
> 4. Netty is both straight-forward to understand, and rather easy to extend.
> 
> All of the above is true for using NIO, with OIO or other Netty-tools,
> your mileage may or may not varies, I cannot tell since we haven't test it.
> 
> Happy coding.
> 
> 
> 2010/6/16 Johan3 <hari97 at mymail.fi <mailto:hari97 at mymail.fi>>
> 
> 
>     Hello everyone, I'm a newbie user of Netty. I've tried out couple
>     frameworks
>     which were not able to offer me what I need, so I got couple
>     questions about
>     Netty. I've checked out the comments about Netty and also tried out few
>     code-examples, and I'm pretty optimistic about this.
> 
>     I have a online Java game project, and the server should be able to
>     handle
>     about 2000-3000 clients, but it's a game where low latency is really
>     important - every millisecond counts. Is Netty able to handle those
>     clients
>     without "lag"? Some frameworks offers many great features (still
>     useless for
>     me), and it causes unwanted latency.
> 
>     If Netty is the right choice for me, could you also give some advices to
>     newbie... These  things are on my mind:
> 
>     1: My game should sends packets and encode (and decode) packets for
>     example
>     like following:
>     byte whatMessageItIs, int SomeNumber, boolean true, int type, String
>     message
>     So does Netty provide a simple way to do this, encode and decode a
>     packet
>     where the first byte is some kind of a type of the message. In the guide
>     there's many kind of handlers, encoders and decoders added to
>     pipeline, but
>     is this kind of a simple messaging system enough or am I missing
>     something?
> 
>     2: I also got to make rooms to the game, every room has a running thread
>     (which moves players). I'm wondering, how to make it right for Netty,
>     because running threads causes maybe most stress to server.
> 
>     3: Also, I have done this kind of a server before. How much should I use
>     Netty's elements in basic server-system, is it ok to use just Netty's
>     messaging system as a base, and do everything else by myself, or
>     should I
>     always use Netty's elements?
> 
>     Regards
>     Johan
>     --
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>     Sent from the Netty User Group mailing list archive at Nabble.com.
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