Add indexer cache with River queue for scheduled refresh

internal/config/config.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"fmt"
+	"time"
 )
 
 const (
@@ -21,11 +22,16 @@ type Config struct {
 		Port string `yaml:"port"`
 	} `yaml:"app"`
 
+	Database struct {
+		URL string `yaml:"url"`
+	} `yaml:"database"`
+
 	Indexer struct {
 		Url    string      `yaml:"url"`
 		Port   string      `yaml:"port"`
 		Type   IndexerType `yaml:"type"`
 		ApiKey string      `yaml:"api_key"`
+		Cache  CacheConfig `yaml:"cache"`
 	} `yaml:"indexer"`
 
 	Torrent struct {
@@ -40,6 +46,12 @@ type Config struct {
 	} `yaml:"metadata"`
 }
 
+type CacheConfig struct {
+	Enabled         bool          `yaml:"enabled"`
+	RefreshInterval time.Duration `yaml:"refresh_interval"`
+	TTL             time.Duration `yaml:"ttl"`
+}
+
 func (t *IndexerType) UnmarshalYAML(unmarshal func(any) error) error {
 	var value string
 	if err := unmarshal(&value); err != nil {