3 questions in one.   Our end goal is serving vector and raster data from
GeoServer (GeoWebCash) in Leaflet quickly - in other words we are trying to
improve performance.

*Tile Size *
We are deciding if our workflow should use the tile size of 512 OR 256.

GeoSolutions raster processing tutorial (here
<https://geoserver.geo-solutions.it/educational/en/enterprise/raster.html>)
is using 512 but 256 is the GeoServer and Leaflet L.TileLayer
<https://docs.eegeo.com/eegeo.js/v0.1.780/docs/leaflet/L.TileLayer/>default.

Does anyone have insight on this?
Is the recommendation different for vector vs raster data?

*Projection Settings  *
We are also investigating performance impacts of projection settings.
Leaflet displays everything in  3857, we are currently storing all our
vector data in PG in  4269 and the raster data we have been using the
datasets local UTM reference such as  26912.  If anyone knows what the best
projection or combination is. Or if the native SRS doesn't matter but we
should set the Declared SRS to 3857 so that there is as little translation
work for GeoServer when the request is called?

 - [26912](https://spatialreference.org/ref/epsg/26912/) - NAD 83 UTM Zone
12
 - [4269](https://spatialreference.org/ref/epsg/4269/) - NAD 83 - PG Default
 - [3857](https://spatialreference.org/ref/sr-org/7483/) - leaflet default
 - [4326](https://spatialreference.org/ref/epsg/4326/) - WGS 83

*OWS vs GWC*

And lastly we are currently calling the layer through

https://
.../ows?&service=WMS&request=GetMap&layers=layer_name&styles=&format=image%2Fpng&transparent=true&version=1.1.1&tiled=true&info_format=text%2Fhtml&identify=false&width=256&height=256&srs=EPSG%3A3857&bbox=...

But according to this post
<https://gis.stackexchange.com/questions/261721/how-to-implement-tile-caching-a-wms-vector-layer-and-use-that-cached-tiles-with>
to get the GeoWebCashed version we might need to call it through something
more like this:
http://example.com/geoserver/*gwc*/service/wms

Any advice on this is very much appreciated,

Vera
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