more metrics

main.go

@@ -14,14 +14,22 @@ import (
 )
 
 var (
-	opsProcessed = promauto.NewCounter(prometheus.CounterOpts{
+	grainSpawns = promauto.NewCounter(prometheus.CounterOpts{
 		Name: "cart_grain_spawned_total",
 		Help: "The total number of spawned grains",
 	})
+	grainMutations = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "cart_grain_mutations_total",
+		Help: "The total number of mutations",
+	})
+	grainLookups = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "cart_grain_lookups_total",
+		Help: "The total number of lookups",
+	})
 )
 
 func spawn(id CartId) (*CartGrain, error) {
-	opsProcessed.Inc()
+	grainSpawns.Inc()
 	ret := &CartGrain{
 		Id:              id,
 		Items:           []CartItem{},