[OpenLayers-Users] Url tile schema description

[Mark Prins]

2012/5/9 Tomas Straupis <tomasstraupis at gmail.com>:
> Hello
>
>  Can somebody point me to the description on how an url (tile scheme)
> attribute works in OpenLayers.Layer.OSM?
>
>  I'm in particular interested in the way an ARRAY of url's works.
> That is if I specify more than one url, how will that be used?

see: https://github.com/openlayers/openlayers/blob/master/lib/OpenLayers/Layer/XYZ.js#L119
and https://github.com/openlayers/openlayers/blob/master/lib/OpenLayers/Layer/HTTPRequest.js#L169
and https://github.com/openlayers/openlayers/blob/master/lib/OpenLayers/BaseTypes.js#L110

> Requests from one client will be split (how?) or first/one working
> tile server will be found and used afterwards?
>  What is the purpose of it? Load balancing? Failover? Something else?

The purpose is "round robin loadbalancing" actually it splits the
loading of tiles across the available service endpoints making loading
of a map faster by using more simultaneous connections than generally
available (4) to a browser.

>
>  Thank you
>
> --
> Tomas
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