Re: [Exist-open] static variables?

[Eduard D. <ed...@fr...>]

ok, fair enough, the reason I ask these questions is because
performance worries me, I have several optimized dictionary
applications where querying 66000 articles takes ± 1s. I find this
slow. db/jpa/ee/jax-rs applications I build run way faster on more
data.
So, now I am exploring options I have to make exist-db apps run faster,
apart from cache on server and/or client or faster machine. I followed
all the exist-db docs and tips on performance, used monex, build
indexes, etc. It just isn't fast enough.
That is why I am wondering about the underlying java processing of
xquery and the influence I have there. But alas the java processing is
carefully hidden.
Perhaps I should experiment with basex, see if that is faster. But I'd
rather stick to exist-db, also because of teipublisher.
Regards, Eduard
-----Original Message-----From: Jean-Paul Rehr <re...@gm...>To:
Eduard Drenth <ed...@fr...>Cc: 
exi...@li... <exi...@li...>Subj
ect: Re: [Exist-open] static variables?Date: Sun, 20 Dec 2020 15:13:20
+0100
>xquery has no static

Indeed. But as I tried to describe in my use case, I use this method
for assigning values which are in effect static across my application
(not static in programming terms). For example:

let $globalvar:datastring := "/db/apps/myapp/data"

But I would not do this:

let $globalvar:somedoc := doc( "/db/apps/myapp/data/mydoc.xml") 


unless I was sure that the underlying document was not going to be
changed elsewhere at the moment the variable was being used. I use this
method for config files that rarely change. (For me, this is an issue
of concurrent changes to a file, not really a question of processing
cost.)

The above may not be useful practice for your context, but in my
applications it is as effective as the cache...

Cheers,
JPR


On Sun, Dec 20, 2020 at 2:23 PM Eduard Drenth <
ed...@fr...> wrote:
> Thanks, but, xquery has no static. And if I do
> 
> declare variable $x := mod:func();
> 
> either or not in an imported module,
> 
> mod:func() gets executed with every request I suspect, but correct me
> if I am wrong.
> 
> Regards, Eduard
> 
> -----Original Message-----
> From: Jean-Paul Rehr <re...@gm...>
> To: Eduard Drenth <ed...@fr...>
> Cc: exi...@li... <
> exi...@li...>
> Subject: Re: [Exist-open] static variables?
> Date: Sun, 20 Dec 2020 13:03:35 +0100
> 
> I accomplish this with a module that just has my "global variables"
> for use across the application. This "global variable" module is
> literally only populated with static variables which I can then
> declare and import as needed in my queries. I keep a lot of static
> configuration data and reusable path strings in them.....
> 
> On Sun, Dec 20, 2020 at 12:45 PM Eduard Drenth <
> ed...@fr...> wrote:
> > Dear all,
> > 
> > For performance reasons I want to be able to work with static
> > variables. My data in exist is readonly.
> > 
> > I get the impression that variables are evaluated on every request
> > normally, so if I do:
> > 
> > declare variable $teidictjson:data := ....
> > 
> > this variable is request scoped. Can I somehow make that static or
> > application scoped? Or is the cache module the only way?
> > 
> > Bye, Eduard
> > -- 
> > Eduard Drenth, Software Architekt
> > 
> > ed...@fr...
> > 
> > Doelestrjitte 8
> > 8911 DX  Ljouwert
> > +31 58 234 30 47
> > +31 62 094 34 28 (privé)
> > 
> > skype: eduarddrenth
> > https://github.com/eduarddrenth
> > frisian.eu
> > gpg: https://pgp.surfnet.nl/pks/lookup?search=eduarddrenth
> > 
> > 
> > Op freed bin ik thús/wurkje ik minder
> > 
> > 
> > 
> > 
> > _______________________________________________
> > 
> > Exist-open mailing list
> > 
> > Exi...@li...
> > 
> > https://lists.sourceforge.net/lists/listinfo/exist-open
> > 
> 
> -- 
> Eduard Drenth, Software Architekt
> 
> ed...@fr...
> 
> Doelestrjitte 8
> 8911 DX  Ljouwert
> +31 58 234 30 47
> +31 62 094 34 28 (privé)
> 
> skype: eduarddrenth
> https://github.com/eduarddrenth
> frisian.eu
> gpg: https://pgp.surfnet.nl/pks/lookup?search=eduarddrenth
> 
> 
> Op freed bin ik thús/wurkje ik minder
> 
> 
> 
> 


-- 
Eduard Drenth, Software Architekt

ed...@fr...

Doelestrjitte 8
8911 DX  Ljouwert
+31 58 234 30 47
+31 62 094 34 28 (privé)

skype: eduarddrenth
https://github.com/eduarddrenth
frisian.eu
gpg: https://pgp.surfnet.nl/pks/lookup?search=eduarddrenth


Op freed bin ik thús/wurkje ik minder