I have a layer on GeoServer which includes lots of organizations. Different organizations can be on the same point. SLD style for this layer:
<?xml version="1.0" encoding="UTF-8"?>
<sld:StyledLayerDescriptor
xmlns="http://www.opengis.net/sld"
xmlns:sld="http://www.opengis.net/sld"
xmlns:gml="http://www.opengis.net/gml"
xmlns:ogc="http://www.opengis.net/ogc" version="1.0.0">
<sld:Name>hybrid_org</sld:Name>
<sld:NamedLayer>
<sld:Name>firms_2gis_info</sld:Name>
<sld:UserStyle>
<sld:Name>Default Styler</sld:Name>
<sld:FeatureTypeStyle>
<sld:Name>firms_2gis_info</sld:Name>
<sld:Title>MBStyle firms_2gis_info</sld:Title>
<sld:Abstract>Generated for firms_2gis_info</sld:Abstract>
<sld:Rule>
<sld:Name>firms_2gis_info</sld:Name>
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:Function name="in">
<ogc:PropertyName>layer_id</ogc:PropertyName>
<ogc:Literal>poi_emergency_01</ogc:Literal>
<ogc:Literal>poi_culture_02</ogc:Literal>
<ogc:Literal>poi_culture_03</ogc:Literal>
<ogc:Literal>poi_leisure_02</ogc:Literal>
<ogc:Literal>poi_sport_04</ogc:Literal>
<ogc:Literal>poi_leisure_01</ogc:Literal>
</ogc:Function>
<ogc:Literal>false</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
<sld:MinScaleDenominator>266.5911979441132</sld:MinScaleDenominator>
<sld:MaxScaleDenominator>17061.836668423246</sld:MaxScaleDenominator>
<sld:TextSymbolizer uom="http://www.opengeospatial.org/se/units/pixel">
<sld:Label>
<ogc:PropertyName>feature_name</ogc:PropertyName>
</sld:Label>
<sld:Font>
<sld:CssParameter name="font-family">
<ogc:Function name="fontAlternatives">
<ogc:Literal>OpenSans-Bold</ogc:Literal>
</ogc:Function>
</sld:CssParameter>
<sld:CssParameter name="font-size">10</sld:CssParameter>
<sld:CssParameter name="font-style">normal</sld:CssParameter>
<sld:CssParameter name="font-weight">normal</sld:CssParameter>
</sld:Font>
<sld:LabelPlacement>
<sld:PointPlacement>
<sld:AnchorPoint>
<sld:AnchorPointX>0.5</sld:AnchorPointX>
<sld:AnchorPointY>1.0</sld:AnchorPointY>
</sld:AnchorPoint>
<sld:Displacement>
<sld:DisplacementX>
<ogc:Mul>
<ogc:Literal>10</ogc:Literal>
<ogc:Literal>0</ogc:Literal>
</ogc:Mul>
</sld:DisplacementX>
<sld:DisplacementY>
<ogc:Mul>
<ogc:Literal>10</ogc:Literal>
<ogc:Mul>
<ogc:Literal>-1</ogc:Literal>
<ogc:Literal>0.5</ogc:Literal>
</ogc:Mul>
</ogc:Mul>
</sld:DisplacementY>
</sld:Displacement>
</sld:PointPlacement>
</sld:LabelPlacement>
<sld:Halo>
<sld:Radius>0.5</sld:Radius>
<sld:Fill>
<sld:CssParameter name="fill">#131813</sld:CssParameter>
</sld:Fill>
</sld:Halo>
<sld:Fill>
<sld:CssParameter name="fill">#FFFFFF</sld:CssParameter>
</sld:Fill>
<sld:Graphic>
<sld:ExternalGraphic>
<sld:OnlineResource
xmlns:xlink="http://www.w3.org/1999/xlink" xlink:type="simple" xlink:href="image"/>
<sld:Format>mbsprite</sld:Format>
</sld:ExternalGraphic>
<sld:AnchorPoint>
<sld:AnchorPointX>0.5</sld:AnchorPointX>
<sld:AnchorPointY>0.0</sld:AnchorPointY>
</sld:AnchorPoint>
<sld:Displacement>
<sld:DisplacementX>
<ogc:Mul>
<ogc:Literal>0.5</ogc:Literal>
<ogc:Literal>0</ogc:Literal>
</ogc:Mul>
</sld:DisplacementX>
<sld:DisplacementY>
<ogc:Mul>
<ogc:Literal>0.5</ogc:Literal>
<ogc:Mul>
<ogc:Literal>-1</ogc:Literal>
<ogc:Literal>0</ogc:Literal>
</ogc:Mul>
</ogc:Mul>
</sld:DisplacementY>
</sld:Displacement>
</sld:Graphic>
<sld:Priority>1000</sld:Priority>
<sld:VendorOption name="repeat">0</sld:VendorOption>
<sld:VendorOption name="conflictResolution">true</sld:VendorOption>
<sld:VendorOption name="graphic-resize">NONE</sld:VendorOption>
<sld:VendorOption name="partials">true</sld:VendorOption>
<sld:VendorOption name="graphic-margin">0</sld:VendorOption>
<sld:VendorOption name="spaceAround">25</sld:VendorOption>
<sld:VendorOption name="autoWrap">150.0</sld:VendorOption>
<sld:VendorOption name="graphicPlacement">INDEPENDENT</sld:VendorOption>
<sld:VendorOption name="labelObstacle">false</sld:VendorOption>
<sld:VendorOption name="fallbackOnDefaultMark">false</sld:VendorOption>
</sld:TextSymbolizer>
</sld:Rule>
</sld:FeatureTypeStyle>
</sld:UserStyle>
</sld:NamedLayer>
</sld:StyledLayerDescriptor>
So, in wms it looks ok:
When i try to seed and cache with help of mapproxy it gives bad results. It cuts images on tile edges. Mapproxy settings like meta_tile_size and meta_buffer helps particullary. Somwhere it helps, somewhere problems are still here.
I understand why this happens. It happens because conflict resolution is different on different tiles. Example:
On this tile the organization in red box is visible, because the neighbour organization is not visible. If we move a little bit right, neighbour organization is visible and conflict resolution hide the first irganization. It means, that the organization will be cut on the tile edge.
I understand, that meta_buffer of mapproxy should do the trick, but somewhere it helps and somewhere not.
Mapproxy - v1.14.0 Geoserver - v2.17.2
After disabling conflictResolution i have this:
