topic Query Task performance in ArcGIS JavaScript Maps SDK Questions

Query Task performance

vinayb — Tue, 10 Sep 2013 14:47:26 GMT

HI All,

How can i improve the performance of query task, suppose if i have to query for about 20-30 features , the browser will hang , what is the performance tuning approaches for ESRI.

Re: Query Task performance

KellyHutchins — Tue, 10 Sep 2013 22:42:08 GMT

Here are a few suggestions:

If you are currently setting outFields to everything (query.outFields=["*"]) remove it and use outFields to specify only the fields you will be using in the query or results.
If you aren't including the results of the query on the map then set query.returnGeometry to false.

Try those out and see if they improve performance. If not it would be helpful to see a code snippet showing what you are currently doing - and perhaps the url to your service if its publicly available.

Re: Query Task performance

vinayb — Wed, 11 Sep 2013 13:32:21 GMT

Thanks kelly i was able to speed up the performance of the query task .I added the maxallowable and spatial reference but still can i improve performance when i try to query for more features i get esri.config.defaults.io.proxyUrl is not set error in IE

Can you please help me resolve this.

Re: Query Task performance

KenBurcham — Wed, 11 Sep 2013 13:58:04 GMT

Here's the url you're looking for.

https://developers.arcgis.com/en/javascript/jshelp/ags_proxy.html

ken.