feat: improve perf by caching proxy and layers locally

internal/cache/ttl/cache.go

@@ -0,0 +1,39 @@
+package ttl
+
+import (
+	"time"
+
+	cache "forge.cadoles.com/cadoles/bouncer/internal/cache"
+)
+
+type Cache[K comparable, V any] struct {
+	timestamps cache.Cache[K, time.Time]
+	values     cache.Cache[K, V]
+	ttl        time.Duration
+}
+
+// Get implements cache.Cache.
+func (c *Cache[K, V]) Get(key K) (V, bool) {
+	timestamp, exists := c.timestamps.Get(key)
+	if !exists || timestamp.Add(c.ttl).Before(time.Now()) {
+		return *new(V), false
+	}
+
+	return c.values.Get(key)
+}
+
+// Set implements cache.Cache.
+func (c *Cache[K, V]) Set(key K, value V) {
+	c.timestamps.Set(key, time.Now())
+	c.values.Set(key, value)
+}
+
+func NewCache[K comparable, V any](values cache.Cache[K, V], timestamps cache.Cache[K, time.Time], ttl time.Duration) *Cache[K, V] {
+	return &Cache[K, V]{
+		values:     values,
+		timestamps: timestamps,
+		ttl:        ttl,
+	}
+}
+
+var _ cache.Cache[string, bool] = &Cache[string, bool]{}