Improve caching, move mutex to the cache implementation

application/repository/logs.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"sync"
 	"time"
 
 	"github.com/uptrace/bun"
@@ -57,7 +56,6 @@ func NewConnLogs(ctx context.Context, db *bun.DB, cache Cache, logger *zap.Logge
 
 type ConnLogs struct {
 	db     *bun.DB
-	mu     sync.RWMutex
 	cache  Cache
 	lastTS time.Time
 }
@@ -65,9 +63,6 @@ type ConnLogs struct {
 func (l *ConnLogs) fillCache(ctx context.Context) error {
 	var entity []ConnLog
 
-	l.mu.Lock()
-	defer l.mu.Unlock()
-
 	query := l.db.NewSelect().Model(&entity).
 		Order("ts").
 		Group("user_id", "ip_addr").
@@ -82,22 +77,8 @@ func (l *ConnLogs) fillCache(ctx context.Context) error {
 		return fmt.Errorf("select: %w", err)
 	}
 
-loop:
 	for i := range entity {
-		item := &entity[i]
-
-		if ips := l.cache.Get(item.UserID); len(ips) == 0 {
-			l.cache.Append(item.UserID, item.IP)
-			continue
-		}
-
-		for _, s := range l.cache.Get(item.UserID) {
-			if s == item.IP {
-				continue loop
-			}
-		}
-
-		l.cache.Append(item.UserID, item.IP)
+		l.cache.Append(entity[i].UserID, entity[i].IP)
 	}
 
 	if len(entity) > 0 {