My experience is that performance is generally better with D2W.
The very first load of a page template can take slightly longer because rules
are being cached and components are being loaded. After that, it's greased
lightning compared to non-D2W because
a) most of the branch logic is cached, ('regular' WOComponents will evaluate
this stuff every time)
b) most of the D2W components that need to be loaded are now cached, and
c) most D2W components are stateless or non-synchronizing
The 'regular' WOComponents I've seen in 'real world' apps typically carry
around a lot of state. Fat, slow synchronizing stateful components...
Of course, I haven't done any benchmarks to back that up, but then, I don't
really need them. Whenever I see dismal performance from a WO app, it has never
been due to the front end components anyway. It's always due to bad design
decisions in the model. It usually ends up looking something like:
for(MyEO eo: myObjects) {
String val =
eo.omg().i().am().going().to().pound().the().crap().out().of().my().database();
String val2 =
eo.oh().no().my().database().has().more().relationships().than().attributes();
NSArray val3 = eo.wtf().everything().is().a().many().toMany();
//Sob, cry, kill yourself.
...
}
Now the server box is a melted pile of slag. But hey, if it worked on a 10
item list in development, I'm sure it will work with hundreds of users over
thousands of rows in production!! (^_^) Other performance sucking pet-peeves
of mine: EOSharedEditingContext and gratuitous use of custom SQL. None of
which has anything to do with view components.
YMMV,
Ramsey
On May 6, 2011, at 4:36 PM, David Holt wrote:
> I believe I have read here that the hit is about 10% because of efficient
> caching. In practice I am not noticing any speed issues with the apps that I
> have deployed.
>
> When you learn D2W, you will see application of the best practices in all
> sorts of areas. D2W gives you things like localization and form validation
> for "free" out of the box. It sort of forces you to use MVC to be most
> efficient. You'll start to use the business logic classes as they were
> intended. I hope to put together a getting started tutorial (most likely a
> screencast) before talking about customization at WOWODC.
>
> But I digress... :-)
>
> On 2011-05-06, at 4:27 PM, Kevin Spake wrote:
>
>> Deep stuff. I'm not ready yet, but it sounds brilliant. What is the
>> performance hit, given that so much is happening at runtime?
>>
>> Kevin
>>
>> --- On Fri, 5/6/11, David Holt <[email protected]> wrote:
>>
>> From: David Holt <[email protected]>
>> Subject: Re: What do you use for building the web interface?
>> To: "Kevin Spake" <[email protected]>
>> Cc: [email protected]
>> Date: Friday, May 6, 2011, 3:48 PM
>>
>> I use DirectToWeb with ERModernLook to build my web interfaces. Pretty much
>> everything I commonly do is handled by the built in components and most of
>> the rest is handled by some tweaks to CSS.
>>
>> You should probably learn about this technology as soon as you can. I'm not
>> saying you should use it right now, but keep it in mind going forward.
>>
>> http://wiki.objectstyle.org/confluence/display/WO/Direct+To+Web+%28D2W+and+ERD2W%29
>>
>> David
>>
>>
>> On 2011-05-06, at 2:40 PM, Kevin Spake wrote:
>>
>>> What do you use to build the web interface for your WO apps? Eclipse?
>>> DreamWeaver? Is there any sort of agreed upon 'best practices' regarding
>>> building complex UIs?
>>>
>>> Kevin
>>> _______________________________________________
>>> Do not post admin requests to the list. They will be ignored.
>>> Webobjects-dev mailing list ([email protected])
>>> Help/Unsubscribe/Update your Subscription:
>>> http://lists.apple.com/mailman/options/webobjects-dev/programmingosx%40mac.com
>>>
>>> This email sent to [email protected]
>>
>> --
>> David Holt
>>
>> Come to WOWODC in Montreal this July for unparalleled WO learning
>> opportunities and real peer to peer problem solving! Network, socialize,
>> and enjoy a great cosmopolitan city. See you there!
>> http://www.wocommunity.org/wowodc11/
>>
>
> --
> David Holt
>
> Come to WOWODC in Montreal this July for unparalleled WO learning
> opportunities and real peer to peer problem solving! Network, socialize, and
> enjoy a great cosmopolitan city. See you there!
> http://www.wocommunity.org/wowodc11/
>
> _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Webobjects-dev mailing list ([email protected])
> Help/Unsubscribe/Update your Subscription:
> http://lists.apple.com/mailman/options/webobjects-dev/rgurley%40smarthealth.com
>
> This email sent to [email protected]
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list ([email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com
This email sent to [email protected]
