add cache

bot/bot.go

@@ -6,6 +6,7 @@ import (
 	"regexp"
 	"sync"
 
+	"git.sr.ht/~xn/cache/v2"
 	"github.com/getsentry/sentry-go"
 	"gitlab.com/etke.cc/go/logger"
 	"gitlab.com/etke.cc/linkpearl"
@@ -24,6 +25,7 @@ type Bot struct {
 	allowedAdmins           []*regexp.Regexp
 	commands                commandList
 	rooms                   sync.Map
+	cfg                     cache.Cache[settings]
 	log                     *logger.Logger
 	lp                      *linkpearl.Linkpearl
 	mu                      map[id.RoomID]*sync.Mutex
@@ -47,6 +49,7 @@ func New(
 		allowedUsers:  allowedUsers,
 		allowedAdmins: allowedAdmins,
 		rooms:         sync.Map{},
+		cfg:           cache.NewLRU[settings](1000),
 		log:           log,
 		lp:            lp,
 		mu:            map[id.RoomID]*sync.Mutex{},

bot/settings.go

@@ -81,6 +81,11 @@ func (b *Bot) migrateSettings(roomID id.RoomID) {
 }
 
 func (b *Bot) getSettings(roomID id.RoomID) (settings, error) {
+	cfg := b.cfg.Get(roomID.String())
+	if cfg != nil {
+		return cfg, nil
+	}
+
 	config := settings{}
 	err := b.lp.GetClient().GetRoomAccountData(roomID, settingskey, &config)
 	if err != nil {
@@ -90,11 +95,14 @@ func (b *Bot) getSettings(roomID id.RoomID) (settings, error) {
 			// In such cases, just return a default (empty) settings object.
 			err = nil
 		}
+	} else {
+		b.cfg.Set(roomID.String(), config)
 	}
 
 	return config, utils.UnwrapError(err)
 }
 
 func (b *Bot) setSettings(roomID id.RoomID, cfg settings) error {
+	b.cfg.Set(roomID.String(), cfg)
 	return utils.UnwrapError(b.lp.GetClient().SetRoomAccountData(roomID, settingskey, cfg))
 }