[Laszlo-user] Laszlo Capability

[Benjamin Shine]

On Sep 10, 2007, at 7:06 AM, Vincent de Phily wrote:

> On Monday 10 September 2007 14:23:29 Chenri wrote:
>
>> - able to generate dynamic charts in line, candlestick based on
>>   the client side from the  price feed received
>
> Haven't looked at laszlo charts recently, but should be ok.

Charting and Graphing just underwent a major rewrite, but I don't think
it's available to the community yet. I think it's planned for inclusion
in 4.1 -- but if you're interested in evaluating it, we could arrange  
for
you to get access.

>
>> - due to the high responsiveness type of the forex trading  
>> industry,  it
>> need also quite responsive interface. I've tested some of the sample
>> application, but they're kinda slow, it could be my internet line  
>> though, i
>> hope someone can pointed at me some examples for the kind of  
>> application or
>> the possibility to do it with lazlo
>
> Writing a snappy laszlo app requires either a very small app or  
> lots of work.

I have to agree with Vincent here: it can take a lot of work to make  
Laszlo
apps fast. A lot of *learning*, actually. This is something that  
Laszlo Systems'
professional services and training can help with; see
http://www.laszlosystems.com/services/consulting#profiling

>
>> To make a better understanding about the system i'm thinking,
>> consider creating an online stock trading system where users
>> can see real time prices (asynchronous but capable of high rate  
>> speed)
>> with also real time charts that can went back to see years of  
>> historical
>> prices
>> and then can orders through the system and can see their online/ 
>> realtime
>> account balance. All of that in one screen.
>
> Laszlo can make very pretty interfaces, but I think that some of your
> requirements will be hard to meet. This would be the same with any
> browser-based technology.

Check out the Barclays/iShares product, which was developed by Laszlo  
Systems for Barclays:
http://www.ishares.com/tools/index_tracker.jhtml

>
>> One thing I also want to add is the load burden for providing  
>> connection
>> for something like 1000 simultaneous connection, how many connections
>> will it provide service per server, i know this is depends on many  
>> factors,
>> but do anyone have a rough estimation or experiences about it?
>
> You really want to ask the tomcat or apache guys about that.

Indeed; for SOLO deployments the laszlo server isn't in the loop at all;
you just have tomcat or apache or whatever serving up a swf or an  
html file.
So this is really a question for whatever server technology you're  
using.

Hope this helps!
-ben