update

utils/limiter.go

@@ -0,0 +1,26 @@
+package utils
+
+import (
+	"cmp"
+	"sync"
+	"time"
+
+	"golang.org/x/time/rate"
+)
+
+// Limiter is a rate limiter that allows a function to be executed at most once per ID and per interval.
+type Limiter struct {
+	Interval time.Duration
+	sm       sync.Map
+}
+
+// Do executes the provided function `f` if the rate limiter for the given `id` allows it.
+// It uses the interval specified in the Limiter struct or defaults to 1 minute if not set.
+func (m *Limiter) Do(id string, f func()) {
+	interval := cmp.Or(
+		m.Interval,
+		time.Minute, // Default every 1 minute
+	)
+	limiter, _ := m.sm.LoadOrStore(id, &rate.Sometimes{Interval: interval})
+	limiter.(*rate.Sometimes).Do(f)
+}