feat: implement core repository layer and redis caching infrastructure

pkg/cache/redis.go

@@ -35,7 +35,8 @@ func NewRedisClient() (Cache, error) {
 
 	rdb := redis.NewClient(&redis.Options{
 		Addr:         uri,
-		MinIdleConns: 10,
+		PoolSize:     500,
+		MinIdleConns: 50,
 		DialTimeout:  5 * time.Second,
 		ReadTimeout:  3 * time.Second,
 		WriteTimeout: 3 * time.Second,

pkg/database/db.go

@@ -20,6 +20,8 @@ func NewPostgresqlDB() (*pgxpool.Pool, error) {
 	if err != nil {
 		return nil, err
 	}
+	poolConfig.MaxConns = 100
+	poolConfig.MinConns = 10
 
 	var pool *pgxpool.Pool