diff --git a/observability_types.go b/observability_types.go
index fbe0ed0..7f562a4 100644
--- a/observability_types.go
+++ b/observability_types.go
@@ -9,4 +9,6 @@ type ObservabilityMetric struct {
 	Version   int         `json:"Version"`
 	Timestamp int64       `json:"Timestamp"` // Unix timestamp
 	Data      interface{} `json:"Data"`
+
+	ShouldCache bool `json:"-"` // Internal field, indicating whether we should cache the given observability metric.
 }