Cache: Refactor cache clients to use byte array (#62930)

Signed-off-by: bergquist <carl.bergquist@gmail.com>

pkg/services/rendering/rendering.go

@@ -2,6 +2,7 @@ package rendering
 
 import (
 	"context"
+	"encoding/gob"
 	"errors"
 	"fmt"
 	"math"
@@ -22,10 +23,6 @@ import (
 	"github.com/grafana/grafana/pkg/util"
 )
 
-func init() {
-	remotecache.Register(&RenderUser{})
-}
-
 var _ Service = (*RenderingService)(nil)
 
 const ServiceName = "RenderingService"
@@ -113,6 +110,9 @@ func ProvideService(cfg *setting.Cfg, remoteCache *remotecache.RemoteCache, rm p
 		domain:                domain,
 		sanitizeURL:           sanitizeURL,
 	}
+
+	gob.Register(&RenderUser{})
+
 	return s, nil
 }