Improve logging, improve rate limit, add running main Router

util/constmap.go

@@ -0,0 +1,17 @@
+package util
+
+// ImmutableMap for disallowing change of elements during runtime, for threadsafty
+type ImmutableMap[K comparable, V any] struct {
+	dirty map[K]V
+}
+
+func NewImmutableMap[K comparable, V any](m map[K]V) *ImmutableMap[K, V] {
+	return &ImmutableMap[K, V]{
+		dirty: m,
+	}
+}
+
+func (m *ImmutableMap[K, V]) Get(key K) (value V, ok bool) {
+	value, ok = m.dirty[key]
+	return value, ok
+}