fix: resolve deadlock in cache eviction and improve GetBatch implementation and full id version (#3591)

* fix: performance issues with Kafka caused by encapsulating the MQ interface

* fix: admin token in standalone mode

* fix: full id version

* fix: resolve deadlock in cache eviction and improve GetBatch implementation

pkg/localcache/lru/lru_expiration.go

@@ -52,8 +52,53 @@ type ExpirationLRU[K comparable, V any] struct {
 }
 
 func (x *ExpirationLRU[K, V]) GetBatch(keys []K, fetch func(keys []K) (map[K]V, error)) (map[K]V, error) {
-	//TODO implement me
-	panic("implement me")
+	var (
+		err     error
+		results = make(map[K]V)
+		misses  = make([]K, 0, len(keys))
+	)
+
+	for _, key := range keys {
+		x.lock.Lock()
+		v, ok := x.core.Get(key)
+		x.lock.Unlock()
+		if ok {
+			x.target.IncrGetHit()
+			v.lock.RLock()
+			results[key] = v.value
+			if v.err != nil && err == nil {
+				err = v.err
+			}
+			v.lock.RUnlock()
+			continue
+		}
+		misses = append(misses, key)
+	}
+
+	if len(misses) == 0 {
+		return results, err
+	}
+
+	fetchValues, fetchErr := fetch(misses)
+	if fetchErr != nil && err == nil {
+		err = fetchErr
+	}
+
+	for key, val := range fetchValues {
+		results[key] = val
+		if fetchErr != nil {
+			x.target.IncrGetFailed()
+			continue
+		}
+		x.target.IncrGetSuccess()
+		item := &expirationLruItem[V]{value: val}
+		x.lock.Lock()
+		x.core.Add(key, item)
+		x.lock.Unlock()
+	}
+
+	// any keys not returned from fetch remain absent (no cache write)
+	return results, err
 }
 
 func (x *ExpirationLRU[K, V]) Get(key K, fetch func() (V, error)) (V, error) {

pkg/localcache/lru/lru_slot.go

@@ -35,7 +35,7 @@ type slotLRU[K comparable, V any] struct {
 func (x *slotLRU[K, V]) GetBatch(keys []K, fetch func(keys []K) (map[K]V, error)) (map[K]V, error) {
 	var (
 		slotKeys = make(map[uint64][]K)
-		kVs       = make(map[K]V)
+		vs       = make(map[K]V)
 	)
 
 	for _, k := range keys {
@@ -49,10 +49,10 @@ func (x *slotLRU[K, V]) GetBatch(keys []K, fetch func(keys []K) (map[K]V, error)
 			return nil, err
 		}
 		for key, value := range batches {
-			kVs[key] = value
+			vs[key] = value
 		}
 	}
-	return kVs, nil
+	return vs, nil
 }
 
 func (x *slotLRU[K, V]) getIndex(k K) uint64 {