[Tilecache] Can TileCache store tiles remotely

[David Alda Fernandez de Lezea]

Hi Brian,

Thanks for your response. We're planning to set up several servers, we haven't done anything so far.  I like the postgres config approach , is there any link to the documentation or some tutorial? 

What is memchache?

Thanks,

Agur bero bat,


David Alda Fernández de Lezea
Área de Sistemas de Información Geográfica, Planificación Territorial y Forestal Informazio Geografikoen Sistemak, Lurralde eta Baso Antolaketaren Arloa.
dalda at hazi.eus | www.hazi.eus
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-----Mensaje original-----
De: Brian Case [mailto:rush at winkey.org] 
Enviado el: viernes, 09 de enero de 2015 21:12
Para: David Alda Fernandez de Lezea
CC: Chris Krahe; tilecache at lists.osgeo.org
Asunto: Re: [Tilecache] Can TileCache store tiles remotely

David,

many tilecache instances could read and write from a ahared mount at the same time. note you may want fiberchannel for this or very fast net (40gbit). tilecache makes a lock before it tries to create a tile (mkdir), this will prevent other threads or instances from writing to the same file.

https://github.com/OSGeo/tilecache/blob/1ed36b439253d4c23612824928e522f5f45fd2d1/tilecache/TileCache/Caches/Disk.py#L147

you could also set up many instances of tilecache with memcache or redis and point them to your existing cache


if you do choose to go with many instances of tilecache you may wish to use the postgres config, or the memcache config with postgress behind it.

also check out the expired config option, you can cache dynamic data by just changing a date in the config whenever the data changes , the disk and redis caches support this.


brian


On Thu, 2015-01-08 at 11:08 +0000, David Alda Fernandez de Lezea wrote:
> Hi Chris,
> 
> Thanks for your response. 
> 
> Why is that? I mean, does tilecache lock the directory in some way? 
> 
> What would be the best approach to have several tilecache instances reading/writing simultaneously?
> 
> Thanks in advance.
> 
> 
> De: ckrahe at gmail.com [mailto:ckrahe at gmail.com] En nombre de Chris 
> Krahe Enviado el: jueves, 08 de enero de 2015 11:49
> Para: David Alda Fernandez de Lezea
> Asunto: Re: [Tilecache] Can TileCache store tiles remotely
> 
> Network drive, sure. But be aware that a cache can only be used by one instance of TileCache... That is, you cannot have two or more instances reading and writing to the same set of tiles. 
> Chris
> On Jan 8, 2015 2:05 AM, "David Alda Fernandez de Lezea" <dalda at hazi.eus> wrote:
> Hi list,
> 
> We're planning to change our architecture as our data is growing and I was wondering if tilecache can store the tiles in a remote server or network drive.
> 
> Thanks in advance.
> 
> 
> 
> Agur bero bat,
> 
> 
> David Alda Fernández de Lezea
> Área de Sistemas de Información Geográfica, Planificación Territorial y Forestal Informazio Geografikoen Sistemak, Lurralde eta Baso Antolaketaren Arloa.
> dalda at hazi.eus | www.hazi.eus
> T 945 003 240 - M 627 923 170 - F 945 003 290 Hazi | Granja Modelo de 
> Arkaute s/n | 01192 Arkaute - Araba
> 
> 
> 
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