Can't use cacheDuration

[MoRadwan74]

Hello, I have a JSON file that contains some layers that I'm trying to show in Terria without caching the file in the browser. So, I added "cacheDuration": "0s" to each layer like that:

{
"name": "great_britain_points",
"type": "wms",
"cacheDuration": "0s",
"url": "http://localhost/geoserver/ows",
"layers": "cartoview_datastore:geonode:great_britain_points",
"opacity": 0.9
},

But the layers still caching, any thoughts??

[tephenavies]

HI @MoRadwan74. The property "cacheDuration" only applies to items that are proxied through terriajs-server proxy/ endpoint. I think something else must be adding cache headers. Check the network requests that terriajs makes (using network tab of browser debugger - you can filter to "localhost/geoserver/ows" to make it easier to find the relevant requests) and take a look at the cache headers.

See https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching & https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control to better understand the effect of specific caching headers.

If the caching is not in headers it could be geoserver or maybe a reverse proxy in front of geoserver that's adding caching.

[tephenavies]

If it is being proxied through terriajs-server the URL will show up in the network tab as "/proxy/http://localhost/geoserver/ows" or "/proxy/0s/http://localhost/geoserver/ows"

[MoRadwan74]

Yes, I forgot to talk about proxy. The JSON that I'm requesting is proxied and the request in the network tab looks like that http://localhost:3001/proxy/http://localhost:7000/sda-catalog-layers.json but it didn't contain the cacheDuration value, I even tried to make it something other than 0s like 2m but the request is still not changed.

Here are some screens for the request and headers.

[MoRadwan74]

In the first image, you can find it still comes from the cache.