Fronius Solar API V1: cache GetPowerFlowRealtimeData requests (#32422)

templates/definition/meter/fronius-solarapi-v1.yaml

@@ -42,11 +42,14 @@ params:
       de: Firmware Versionen ab 1.36.5-1 erfordern /api/config.
       en: Firmware starting with 1.36.5-1 requires /api/config.
   - preset: battery-params
+  - name: cache
+    default: 1s
 render: |
   type: custom
   power:
     source: http
     uri: http://{{ .host }}/solar_api/v1/GetPowerFlowRealtimeData.fcgi
+    cache: {{ .cache }}
   {{- if eq .usage "grid" }}
     jq: if .Body.Data.Site.P_Grid == null then 0 else .Body.Data.Site.P_Grid end
   {{- end }}
@@ -59,6 +62,7 @@ render: |
     uri: http://{{ .host }}/solar_api/v1/GetPowerFlowRealtimeData.fcgi
     jq: if .Body.Data.Site.E_Total == null then 0 else .Body.Data.Site.E_Total end
     scale: 0.001
+    cache: {{ .cache }}
   {{- end }}
   {{- if eq .usage "battery" }}
     jq: if .Body.Data.Site.P_Akku == null then 0 else .Body.Data.Site.P_Akku end
@@ -66,6 +70,7 @@ render: |
     source: http
     uri: http://{{ .host }}/solar_api/v1/GetPowerFlowRealtimeData.fcgi
     jq: .Body.Data.Inverters."1".SOC
+    cache: {{ .cache }}
   {{- if .password }}
   batterymode:
     source: switch