[mapguide-internals] Please review RFC 107

[Trevor Wekel]

I agree with Zac.  Tile generation should be implemented as a server-side batch process.  The proposed GenerateTile could be used to implement the rendering portion of that process.  Exposing it over HTTP is not really required.  Using a client application to continuously monitor a server-side batch process is a bit strange.  The server should just generate a log from the tile generation process and allow the client to grab the log whenever required.

A server-side GenerateTile implementation is definitely required but it is only a small part of a much larger solution.  RFC 107 would likely take a day to implement since the tile generation process is already in place.

RFC 90 Meta Tiling increases tile generation performance by an order of magnitude.  This work should be completed before implementing any new tile generation mechanism.  In other words, the server-side batch process should make heavy use of RFC 90.

Once RFC 90 is in place, an enhanced Tile generation RFC could expose a GenerateTiles API which takes an extent and a scale.  Each API call would queue an area for rendering.  A serverconfig.ini parameter could be used to control the number of worker threads allocated to the rendering queue.

Additional APIs could be introduced to display the current state of the Tile generation queue and return the log from previously completed GenerateTiles calls.

Regards, 
Trevor


-----Original Message-----
From: mapguide-internals-bounces at lists.osgeo.org [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of Zac Spitzer
Sent: July 28, 2010 1:31 AM
To: MapGuide Internals Mail List
Subject: Re: [mapguide-internals] Please review RFC 107

Currently I believe the tile service simply returns success even when
rendering fails
and the incomplete result of the rendering is persisted as a broken tile

Whilst returning a tile is some overhead, I would prefer to see more of a
batched
approach to seeding tiles. Requiring a single call per title is rather
inefficent
and chatty

z


On 28 July 2010 16:29, Ted Yang <ted.yang at autodesk.com> wrote:

> Hi all,
>
> Would you please review RFC 107: Enhance Tile service to add a new API
> GenerateTile.
> Link: https://trac.osgeo.org/mapguide/wiki/MapGuideRfc107
> Thank you.
>
> Best Wishes,
> Ted Yang (Yuanyuan Yang)
> Reeses,Tel: (8621)3866-4595
>
>
>
> _______________________________________________
> mapguide-internals mailing list
> mapguide-internals at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapguide-internals
>



-- 
Zac Spitzer
Solution Architect / Director
Ennoble Consultancy Australia
http://www.ennoble.com.au
http://zacster.blogspot.com
+61 405 847 168
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