Merge pull request #282 from LLLLLLiulei/feat/ip-management-enhancements

feat: enhance proxy management

backend/cmd/server/wire_gen.go

@@ -67,7 +67,6 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	userHandler := handler.NewUserHandler(userService)
 	apiKeyHandler := handler.NewAPIKeyHandler(apiKeyService)
 	usageLogRepository := repository.NewUsageLogRepository(client, db)
-	dashboardAggregationRepository := repository.NewDashboardAggregationRepository(db)
 	usageService := service.NewUsageService(usageLogRepository, userRepository, client, apiKeyAuthCacheInvalidator)
 	usageHandler := handler.NewUsageHandler(usageService, apiKeyService)
 	redeemCodeRepository := repository.NewRedeemCodeRepository(client)
@@ -76,15 +75,17 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	redeemService := service.NewRedeemService(redeemCodeRepository, userRepository, subscriptionService, redeemCache, billingCacheService, client, apiKeyAuthCacheInvalidator)
 	redeemHandler := handler.NewRedeemHandler(redeemService)
 	subscriptionHandler := handler.NewSubscriptionHandler(subscriptionService)
+	dashboardAggregationRepository := repository.NewDashboardAggregationRepository(db)
 	dashboardStatsCache := repository.NewDashboardCache(redisClient, configConfig)
+	dashboardService := service.NewDashboardService(usageLogRepository, dashboardAggregationRepository, dashboardStatsCache, configConfig)
 	timingWheelService := service.ProvideTimingWheelService()
 	dashboardAggregationService := service.ProvideDashboardAggregationService(dashboardAggregationRepository, timingWheelService, configConfig)
-	dashboardService := service.NewDashboardService(usageLogRepository, dashboardAggregationRepository, dashboardStatsCache, configConfig)
 	dashboardHandler := admin.NewDashboardHandler(dashboardService, dashboardAggregationService)
 	accountRepository := repository.NewAccountRepository(client, db)
 	proxyRepository := repository.NewProxyRepository(client, db)
 	proxyExitInfoProber := repository.NewProxyExitInfoProber(configConfig)
-	adminService := service.NewAdminService(userRepository, groupRepository, accountRepository, proxyRepository, apiKeyRepository, redeemCodeRepository, billingCacheService, proxyExitInfoProber, apiKeyAuthCacheInvalidator)
+	proxyLatencyCache := repository.NewProxyLatencyCache(redisClient)
+	adminService := service.NewAdminService(userRepository, groupRepository, accountRepository, proxyRepository, apiKeyRepository, redeemCodeRepository, billingCacheService, proxyExitInfoProber, proxyLatencyCache, apiKeyAuthCacheInvalidator)
 	adminUserHandler := admin.NewUserHandler(adminService)
 	groupHandler := admin.NewGroupHandler(adminService)
 	claudeOAuthClient := repository.NewClaudeOAuthClient()
@@ -112,9 +113,6 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	accountTestService := service.NewAccountTestService(accountRepository, geminiTokenProvider, antigravityGatewayService, httpUpstream, configConfig)
 	concurrencyCache := repository.ProvideConcurrencyCache(redisClient, configConfig)
 	concurrencyService := service.ProvideConcurrencyService(concurrencyCache, accountRepository, configConfig)
-	schedulerCache := repository.NewSchedulerCache(redisClient)
-	schedulerOutboxRepository := repository.NewSchedulerOutboxRepository(db)
-	schedulerSnapshotService := service.ProvideSchedulerSnapshotService(schedulerCache, schedulerOutboxRepository, accountRepository, groupRepository, configConfig)
 	crsSyncService := service.NewCRSSyncService(accountRepository, proxyRepository, oAuthService, openAIOAuthService, geminiOAuthService, configConfig)
 	accountHandler := admin.NewAccountHandler(adminService, oAuthService, openAIOAuthService, geminiOAuthService, antigravityOAuthService, rateLimitService, accountUsageService, accountTestService, concurrencyService, crsSyncService)
 	oAuthHandler := admin.NewOAuthHandler(oAuthService)
@@ -125,6 +123,9 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	adminRedeemHandler := admin.NewRedeemHandler(adminService)
 	promoHandler := admin.NewPromoHandler(promoService)
 	opsRepository := repository.NewOpsRepository(db)
+	schedulerCache := repository.NewSchedulerCache(redisClient)
+	schedulerOutboxRepository := repository.NewSchedulerOutboxRepository(db)
+	schedulerSnapshotService := service.ProvideSchedulerSnapshotService(schedulerCache, schedulerOutboxRepository, accountRepository, groupRepository, configConfig)
 	pricingRemoteClient := repository.ProvidePricingRemoteClient(configConfig)
 	pricingService, err := service.ProvidePricingService(configConfig, pricingRemoteClient)
 	if err != nil {

backend/internal/handler/admin/proxy_handler.go

@@ -196,6 +196,28 @@ func (h *ProxyHandler) Delete(c *gin.Context) {
 	response.Success(c, gin.H{"message": "Proxy deleted successfully"})
 }
 
+// BatchDelete handles batch deleting proxies
+// POST /api/v1/admin/proxies/batch-delete
+func (h *ProxyHandler) BatchDelete(c *gin.Context) {
+	type BatchDeleteRequest struct {
+		IDs []int64 `json:"ids" binding:"required,min=1"`
+	}
+
+	var req BatchDeleteRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	result, err := h.adminService.BatchDeleteProxies(c.Request.Context(), req.IDs)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	response.Success(c, result)
+}
+
 // Test handles testing proxy connectivity
 // POST /api/v1/admin/proxies/:id/test
 func (h *ProxyHandler) Test(c *gin.Context) {
@@ -243,19 +265,17 @@ func (h *ProxyHandler) GetProxyAccounts(c *gin.Context) {
 		return
 	}
 
-	page, pageSize := response.ParsePagination(c)
-
-	accounts, total, err := h.adminService.GetProxyAccounts(c.Request.Context(), proxyID, page, pageSize)
+	accounts, err := h.adminService.GetProxyAccounts(c.Request.Context(), proxyID)
 	if err != nil {
 		response.ErrorFrom(c, err)
 		return
 	}
 
-	out := make([]dto.Account, 0, len(accounts))
+	out := make([]dto.ProxyAccountSummary, 0, len(accounts))
 	for i := range accounts {
-		out = append(out, *dto.AccountFromService(&accounts[i]))
+		out = append(out, *dto.ProxyAccountSummaryFromService(&accounts[i]))
 	}
-	response.Paginated(c, out, total, page, pageSize)
+	response.Success(c, out)
 }
 
 // BatchCreateProxyItem represents a single proxy in batch create request

backend/internal/handler/dto/mappers.go

@@ -213,8 +213,24 @@ func ProxyWithAccountCountFromService(p *service.ProxyWithAccountCount) *ProxyWi
 		return nil
 	}
 	return &ProxyWithAccountCount{
-		Proxy:        *ProxyFromService(&p.Proxy),
-		AccountCount: p.AccountCount,
+		Proxy:          *ProxyFromService(&p.Proxy),
+		AccountCount:   p.AccountCount,
+		LatencyMs:      p.LatencyMs,
+		LatencyStatus:  p.LatencyStatus,
+		LatencyMessage: p.LatencyMessage,
+	}
+}
+
+func ProxyAccountSummaryFromService(a *service.ProxyAccountSummary) *ProxyAccountSummary {
+	if a == nil {
+		return nil
+	}
+	return &ProxyAccountSummary{
+		ID:       a.ID,
+		Name:     a.Name,
+		Platform: a.Platform,
+		Type:     a.Type,
+		Notes:    a.Notes,
 	}
 }
 

backend/internal/handler/dto/types.go

@@ -130,7 +130,18 @@ type Proxy struct {
 
 type ProxyWithAccountCount struct {
 	Proxy
-	AccountCount int64 `json:"account_count"`
+	AccountCount   int64  `json:"account_count"`
+	LatencyMs      *int64 `json:"latency_ms,omitempty"`
+	LatencyStatus  string `json:"latency_status,omitempty"`
+	LatencyMessage string `json:"latency_message,omitempty"`
+}
+
+type ProxyAccountSummary struct {
+	ID       int64   `json:"id"`
+	Name     string  `json:"name"`
+	Platform string  `json:"platform"`
+	Type     string  `json:"type"`
+	Notes    *string `json:"notes,omitempty"`
 }
 
 type RedeemCode struct {

backend/internal/repository/proxy_latency_cache.go

+package repository
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/redis/go-redis/v9"
+)
+
+const proxyLatencyKeyPrefix = "proxy:latency:"
+
+func proxyLatencyKey(proxyID int64) string {
+	return fmt.Sprintf("%s%d", proxyLatencyKeyPrefix, proxyID)
+}
+
+type proxyLatencyCache struct {
+	rdb *redis.Client
+}
+
+func NewProxyLatencyCache(rdb *redis.Client) service.ProxyLatencyCache {
+	return &proxyLatencyCache{rdb: rdb}
+}
+
+func (c *proxyLatencyCache) GetProxyLatencies(ctx context.Context, proxyIDs []int64) (map[int64]*service.ProxyLatencyInfo, error) {
+	results := make(map[int64]*service.ProxyLatencyInfo)
+	if len(proxyIDs) == 0 {
+		return results, nil
+	}
+
+	keys := make([]string, 0, len(proxyIDs))
+	for _, id := range proxyIDs {
+		keys = append(keys, proxyLatencyKey(id))
+	}
+
+	values, err := c.rdb.MGet(ctx, keys...).Result()
+	if err != nil {
+		return results, err
+	}
+
+	for i, raw := range values {
+		if raw == nil {
+			continue
+		}
+		var payload []byte
+		switch v := raw.(type) {
+		case string:
+			payload = []byte(v)
+		case []byte:
+			payload = v
+		default:
+			continue
+		}
+		var info service.ProxyLatencyInfo
+		if err := json.Unmarshal(payload, &info); err != nil {
+			continue
+		}
+		results[proxyIDs[i]] = &info
+	}
+
+	return results, nil
+}
+
+func (c *proxyLatencyCache) SetProxyLatency(ctx context.Context, proxyID int64, info *service.ProxyLatencyInfo) error {
+	if info == nil {
+		return nil
+	}
+	payload, err := json.Marshal(info)
+	if err != nil {
+		return err
+	}
+	return c.rdb.Set(ctx, proxyLatencyKey(proxyID), payload, 0).Err()
+}

backend/internal/repository/proxy_probe_service.go

@@ -34,7 +34,10 @@ func NewProxyExitInfoProber(cfg *config.Config) service.ProxyExitInfoProber {
 	}
 }
 
-const defaultIPInfoURL = "https://ipinfo.io/json"
+const (
+	defaultIPInfoURL         = "https://ipinfo.io/json"
+	defaultProxyProbeTimeout = 30 * time.Second
+)
 
 type proxyProbeService struct {
 	ipInfoURL          string
@@ -46,7 +49,7 @@ type proxyProbeService struct {
 func (s *proxyProbeService) ProbeProxy(ctx context.Context, proxyURL string) (*service.ProxyExitInfo, int64, error) {
 	client, err := httpclient.GetClient(httpclient.Options{
 		ProxyURL:           proxyURL,
-		Timeout:            15 * time.Second,
+		Timeout:            defaultProxyProbeTimeout,
 		InsecureSkipVerify: s.insecureSkipVerify,
 		ProxyStrict:        true,
 		ValidateResolvedIP: s.validateResolvedIP,

backend/internal/repository/proxy_repo.go

@@ -219,12 +219,54 @@ func (r *proxyRepository) ExistsByHostPortAuth(ctx context.Context, host string,
 // CountAccountsByProxyID returns the number of accounts using a specific proxy
 func (r *proxyRepository) CountAccountsByProxyID(ctx context.Context, proxyID int64) (int64, error) {
 	var count int64
-	if err := scanSingleRow(ctx, r.sql, "SELECT COUNT(*) FROM accounts WHERE proxy_id = $1", []any{proxyID}, &count); err != nil {
+	if err := scanSingleRow(ctx, r.sql, "SELECT COUNT(*) FROM accounts WHERE proxy_id = $1 AND deleted_at IS NULL", []any{proxyID}, &count); err != nil {
 		return 0, err
 	}
 	return count, nil
 }
 
+func (r *proxyRepository) ListAccountSummariesByProxyID(ctx context.Context, proxyID int64) ([]service.ProxyAccountSummary, error) {
+	rows, err := r.sql.QueryContext(ctx, `
+		SELECT id, name, platform, type, notes
+		FROM accounts
+		WHERE proxy_id = $1 AND deleted_at IS NULL
+		ORDER BY id DESC
+	`, proxyID)
+	if err != nil {
+		return nil, err
+	}
+	defer func() { _ = rows.Close() }()
+
+	out := make([]service.ProxyAccountSummary, 0)
+	for rows.Next() {
+		var (
+			id       int64
+			name     string
+			platform string
+			accType  string
+			notes    sql.NullString
+		)
+		if err := rows.Scan(&id, &name, &platform, &accType, &notes); err != nil {
+			return nil, err
+		}
+		var notesPtr *string
+		if notes.Valid {
+			notesPtr = &notes.String
+		}
+		out = append(out, service.ProxyAccountSummary{
+			ID:       id,
+			Name:     name,
+			Platform: platform,
+			Type:     accType,
+			Notes:    notesPtr,
+		})
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // GetAccountCountsForProxies returns a map of proxy ID to account count for all proxies
 func (r *proxyRepository) GetAccountCountsForProxies(ctx context.Context) (counts map[int64]int64, err error) {
 	rows, err := r.sql.QueryContext(ctx, "SELECT proxy_id, COUNT(*) AS count FROM accounts WHERE proxy_id IS NOT NULL AND deleted_at IS NULL GROUP BY proxy_id")

backend/internal/repository/wire.go

@@ -69,6 +69,7 @@ var ProviderSet = wire.NewSet(
 	NewGeminiTokenCache,
 	NewSchedulerCache,
 	NewSchedulerOutboxRepository,
+	NewProxyLatencyCache,
 
 	// HTTP service ports (DI Strategy A: return interface directly)
 	NewTurnstileVerifier,

backend/internal/server/api_contract_test.go

@@ -436,7 +436,7 @@ func newContractDeps(t *testing.T) *contractDeps {
 	settingRepo := newStubSettingRepo()
 	settingService := service.NewSettingService(settingRepo, cfg)
 
-	adminService := service.NewAdminService(userRepo, groupRepo, &accountRepo, proxyRepo, apiKeyRepo, redeemRepo, nil, nil, nil)
+	adminService := service.NewAdminService(userRepo, groupRepo, &accountRepo, proxyRepo, apiKeyRepo, redeemRepo, nil, nil, nil, nil)
 	authHandler := handler.NewAuthHandler(cfg, nil, userService, settingService, nil)
 	apiKeyHandler := handler.NewAPIKeyHandler(apiKeyService)
 	usageHandler := handler.NewUsageHandler(usageService, apiKeyService)
@@ -859,6 +859,10 @@ func (stubProxyRepo) CountAccountsByProxyID(ctx context.Context, proxyID int64)
 	return 0, errors.New("not implemented")
 }
 
+func (stubProxyRepo) ListAccountSummariesByProxyID(ctx context.Context, proxyID int64) ([]service.ProxyAccountSummary, error) {
+	return nil, errors.New("not implemented")
+}
+
 type stubRedeemCodeRepo struct{}
 
 func (stubRedeemCodeRepo) Create(ctx context.Context, code *service.RedeemCode) error {

backend/internal/server/routes/admin.go

@@ -250,6 +250,7 @@ func registerProxyRoutes(admin *gin.RouterGroup, h *handler.Handlers) {
 		proxies.POST("/:id/test", h.Admin.Proxy.Test)
 		proxies.GET("/:id/stats", h.Admin.Proxy.GetStats)
 		proxies.GET("/:id/accounts", h.Admin.Proxy.GetProxyAccounts)
+		proxies.POST("/batch-delete", h.Admin.Proxy.BatchDelete)
 		proxies.POST("/batch", h.Admin.Proxy.BatchCreate)
 	}
 }

backend/internal/service/admin_service.go

@@ -54,7 +54,8 @@ type AdminService interface {
 	CreateProxy(ctx context.Context, input *CreateProxyInput) (*Proxy, error)
 	UpdateProxy(ctx context.Context, id int64, input *UpdateProxyInput) (*Proxy, error)
 	DeleteProxy(ctx context.Context, id int64) error
-	GetProxyAccounts(ctx context.Context, proxyID int64, page, pageSize int) ([]Account, int64, error)
+	BatchDeleteProxies(ctx context.Context, ids []int64) (*ProxyBatchDeleteResult, error)
+	GetProxyAccounts(ctx context.Context, proxyID int64) ([]ProxyAccountSummary, error)
 	CheckProxyExists(ctx context.Context, host string, port int, username, password string) (bool, error)
 	TestProxy(ctx context.Context, id int64) (*ProxyTestResult, error)
 
@@ -223,6 +224,16 @@ type GenerateRedeemCodesInput struct {
 	ValidityDays int    // 订阅类型专用：有效天数
 }
 
+type ProxyBatchDeleteResult struct {
+	DeletedIDs []int64                   `json:"deleted_ids"`
+	Skipped    []ProxyBatchDeleteSkipped `json:"skipped"`
+}
+
+type ProxyBatchDeleteSkipped struct {
+	ID     int64  `json:"id"`
+	Reason string `json:"reason"`
+}
+
 // ProxyTestResult represents the result of testing a proxy
 type ProxyTestResult struct {
 	Success   bool   `json:"success"`
@@ -257,6 +268,7 @@ type adminServiceImpl struct {
 	redeemCodeRepo       RedeemCodeRepository
 	billingCacheService  *BillingCacheService
 	proxyProber          ProxyExitInfoProber
+	proxyLatencyCache    ProxyLatencyCache
 	authCacheInvalidator APIKeyAuthCacheInvalidator
 }
 
@@ -270,6 +282,7 @@ func NewAdminService(
 	redeemCodeRepo RedeemCodeRepository,
 	billingCacheService *BillingCacheService,
 	proxyProber ProxyExitInfoProber,
+	proxyLatencyCache ProxyLatencyCache,
 	authCacheInvalidator APIKeyAuthCacheInvalidator,
 ) AdminService {
 	return &adminServiceImpl{
@@ -281,6 +294,7 @@ func NewAdminService(
 		redeemCodeRepo:       redeemCodeRepo,
 		billingCacheService:  billingCacheService,
 		proxyProber:          proxyProber,
+		proxyLatencyCache:    proxyLatencyCache,
 		authCacheInvalidator: authCacheInvalidator,
 	}
 }
@@ -1093,6 +1107,7 @@ func (s *adminServiceImpl) ListProxiesWithAccountCount(ctx context.Context, page
 	if err != nil {
 		return nil, 0, err
 	}
+	s.attachProxyLatency(ctx, proxies)
 	return proxies, result.Total, nil
 }
 
@@ -1101,7 +1116,12 @@ func (s *adminServiceImpl) GetAllProxies(ctx context.Context) ([]Proxy, error) {
 }
 
 func (s *adminServiceImpl) GetAllProxiesWithAccountCount(ctx context.Context) ([]ProxyWithAccountCount, error) {
-	return s.proxyRepo.ListActiveWithAccountCount(ctx)
+	proxies, err := s.proxyRepo.ListActiveWithAccountCount(ctx)
+	if err != nil {
+		return nil, err
+	}
+	s.attachProxyLatency(ctx, proxies)
+	return proxies, nil
 }
 
 func (s *adminServiceImpl) GetProxy(ctx context.Context, id int64) (*Proxy, error) {
@@ -1121,6 +1141,8 @@ func (s *adminServiceImpl) CreateProxy(ctx context.Context, input *CreateProxyIn
 	if err := s.proxyRepo.Create(ctx, proxy); err != nil {
 		return nil, err
 	}
+	// Probe latency asynchronously so creation isn't blocked by network timeout.
+	go s.probeProxyLatency(context.Background(), proxy)
 	return proxy, nil
 }
 
@@ -1159,12 +1181,53 @@ func (s *adminServiceImpl) UpdateProxy(ctx context.Context, id int64, input *Upd
 }
 
 func (s *adminServiceImpl) DeleteProxy(ctx context.Context, id int64) error {
+	count, err := s.proxyRepo.CountAccountsByProxyID(ctx, id)
+	if err != nil {
+		return err
+	}
+	if count > 0 {
+		return ErrProxyInUse
+	}
 	return s.proxyRepo.Delete(ctx, id)
 }
 
-func (s *adminServiceImpl) GetProxyAccounts(ctx context.Context, proxyID int64, page, pageSize int) ([]Account, int64, error) {
-	// Return mock data for now - would need a dedicated repository method
-	return []Account{}, 0, nil
+func (s *adminServiceImpl) BatchDeleteProxies(ctx context.Context, ids []int64) (*ProxyBatchDeleteResult, error) {
+	result := &ProxyBatchDeleteResult{}
+	if len(ids) == 0 {
+		return result, nil
+	}
+
+	for _, id := range ids {
+		count, err := s.proxyRepo.CountAccountsByProxyID(ctx, id)
+		if err != nil {
+			result.Skipped = append(result.Skipped, ProxyBatchDeleteSkipped{
+				ID:     id,
+				Reason: err.Error(),
+			})
+			continue
+		}
+		if count > 0 {
+			result.Skipped = append(result.Skipped, ProxyBatchDeleteSkipped{
+				ID:     id,
+				Reason: ErrProxyInUse.Error(),
+			})
+			continue
+		}
+		if err := s.proxyRepo.Delete(ctx, id); err != nil {
+			result.Skipped = append(result.Skipped, ProxyBatchDeleteSkipped{
+				ID:     id,
+				Reason: err.Error(),
+			})
+			continue
+		}
+		result.DeletedIDs = append(result.DeletedIDs, id)
+	}
+
+	return result, nil
+}
+
+func (s *adminServiceImpl) GetProxyAccounts(ctx context.Context, proxyID int64) ([]ProxyAccountSummary, error) {
+	return s.proxyRepo.ListAccountSummariesByProxyID(ctx, proxyID)
 }
 
 func (s *adminServiceImpl) CheckProxyExists(ctx context.Context, host string, port int, username, password string) (bool, error) {
@@ -1264,12 +1327,24 @@ func (s *adminServiceImpl) TestProxy(ctx context.Context, id int64) (*ProxyTestR
 	proxyURL := proxy.URL()
 	exitInfo, latencyMs, err := s.proxyProber.ProbeProxy(ctx, proxyURL)
 	if err != nil {
+		s.saveProxyLatency(ctx, id, &ProxyLatencyInfo{
+			Success:   false,
+			Message:   err.Error(),
+			UpdatedAt: time.Now(),
+		})
 		return &ProxyTestResult{
 			Success: false,
 			Message: err.Error(),
 		}, nil
 	}
 
+	latency := latencyMs
+	s.saveProxyLatency(ctx, id, &ProxyLatencyInfo{
+		Success:   true,
+		LatencyMs: &latency,
+		Message:   "Proxy is accessible",
+		UpdatedAt: time.Now(),
+	})
 	return &ProxyTestResult{
 		Success:   true,
 		Message:   "Proxy is accessible",
@@ -1281,6 +1356,29 @@ func (s *adminServiceImpl) TestProxy(ctx context.Context, id int64) (*ProxyTestR
 	}, nil
 }
 
+func (s *adminServiceImpl) probeProxyLatency(ctx context.Context, proxy *Proxy) {
+	if s.proxyProber == nil || proxy == nil {
+		return
+	}
+	_, latencyMs, err := s.proxyProber.ProbeProxy(ctx, proxy.URL())
+	if err != nil {
+		s.saveProxyLatency(ctx, proxy.ID, &ProxyLatencyInfo{
+			Success:   false,
+			Message:   err.Error(),
+			UpdatedAt: time.Now(),
+		})
+		return
+	}
+
+	latency := latencyMs
+	s.saveProxyLatency(ctx, proxy.ID, &ProxyLatencyInfo{
+		Success:   true,
+		LatencyMs: &latency,
+		Message:   "Proxy is accessible",
+		UpdatedAt: time.Now(),
+	})
+}
+
 // checkMixedChannelRisk 检查分组中是否存在混合渠道（Antigravity + Anthropic）
 // 如果存在混合，返回错误提示用户确认
 func (s *adminServiceImpl) checkMixedChannelRisk(ctx context.Context, currentAccountID int64, currentAccountPlatform string, groupIDs []int64) error {
@@ -1330,6 +1428,46 @@ func (s *adminServiceImpl) checkMixedChannelRisk(ctx context.Context, currentAcc
 	return nil
 }
 
+func (s *adminServiceImpl) attachProxyLatency(ctx context.Context, proxies []ProxyWithAccountCount) {
+	if s.proxyLatencyCache == nil || len(proxies) == 0 {
+		return
+	}
+
+	ids := make([]int64, 0, len(proxies))
+	for i := range proxies {
+		ids = append(ids, proxies[i].ID)
+	}
+
+	latencies, err := s.proxyLatencyCache.GetProxyLatencies(ctx, ids)
+	if err != nil {
+		log.Printf("Warning: load proxy latency cache failed: %v", err)
+		return
+	}
+
+	for i := range proxies {
+		info := latencies[proxies[i].ID]
+		if info == nil {
+			continue
+		}
+		if info.Success {
+			proxies[i].LatencyStatus = "success"
+			proxies[i].LatencyMs = info.LatencyMs
+		} else {
+			proxies[i].LatencyStatus = "failed"
+		}
+		proxies[i].LatencyMessage = info.Message
+	}
+}
+
+func (s *adminServiceImpl) saveProxyLatency(ctx context.Context, proxyID int64, info *ProxyLatencyInfo) {
+	if s.proxyLatencyCache == nil || info == nil {
+		return
+	}
+	if err := s.proxyLatencyCache.SetProxyLatency(ctx, proxyID, info); err != nil {
+		log.Printf("Warning: store proxy latency cache failed: %v", err)
+	}
+}
+
 // getAccountPlatform 根据账号 platform 判断混合渠道检查用的平台标识
 func getAccountPlatform(accountPlatform string) string {
 	switch strings.ToLower(strings.TrimSpace(accountPlatform)) {

backend/internal/service/admin_service_delete_test.go

@@ -153,8 +153,10 @@ func (s *groupRepoStub) DeleteAccountGroupsByGroupID(ctx context.Context, groupI
 }
 
 type proxyRepoStub struct {
-	deleteErr  error
-	deletedIDs []int64
+	deleteErr    error
+	countErr     error
+	accountCount int64
+	deletedIDs   []int64
 }
 
 func (s *proxyRepoStub) Create(ctx context.Context, proxy *Proxy) error {
@@ -199,7 +201,14 @@ func (s *proxyRepoStub) ExistsByHostPortAuth(ctx context.Context, host string, p
 }
 
 func (s *proxyRepoStub) CountAccountsByProxyID(ctx context.Context, proxyID int64) (int64, error) {
-	panic("unexpected CountAccountsByProxyID call")
+	if s.countErr != nil {
+		return 0, s.countErr
+	}
+	return s.accountCount, nil
+}
+
+func (s *proxyRepoStub) ListAccountSummariesByProxyID(ctx context.Context, proxyID int64) ([]ProxyAccountSummary, error) {
+	panic("unexpected ListAccountSummariesByProxyID call")
 }
 
 type redeemRepoStub struct {
@@ -409,6 +418,15 @@ func TestAdminService_DeleteProxy_Idempotent(t *testing.T) {
 	require.Equal(t, []int64{404}, repo.deletedIDs)
 }
 
+func TestAdminService_DeleteProxy_InUse(t *testing.T) {
+	repo := &proxyRepoStub{accountCount: 2}
+	svc := &adminServiceImpl{proxyRepo: repo}
+
+	err := svc.DeleteProxy(context.Background(), 77)
+	require.ErrorIs(t, err, ErrProxyInUse)
+	require.Empty(t, repo.deletedIDs)
+}
+
 func TestAdminService_DeleteProxy_Error(t *testing.T) {
 	deleteErr := errors.New("delete failed")
 	repo := &proxyRepoStub{deleteErr: deleteErr}

backend/internal/service/proxy.go

@@ -31,5 +31,16 @@ func (p *Proxy) URL() string {
 
 type ProxyWithAccountCount struct {
 	Proxy
-	AccountCount int64
+	AccountCount   int64
+	LatencyMs      *int64
+	LatencyStatus  string
+	LatencyMessage string
+}
+
+type ProxyAccountSummary struct {
+	ID       int64
+	Name     string
+	Platform string
+	Type     string
+	Notes    *string
 }

backend/internal/service/proxy_latency_cache.go

+package service
+
+import (
+	"context"
+	"time"
+)
+
+type ProxyLatencyInfo struct {
+	Success   bool      `json:"success"`
+	LatencyMs *int64    `json:"latency_ms,omitempty"`
+	Message   string    `json:"message,omitempty"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+type ProxyLatencyCache interface {
+	GetProxyLatencies(ctx context.Context, proxyIDs []int64) (map[int64]*ProxyLatencyInfo, error)
+	SetProxyLatency(ctx context.Context, proxyID int64, info *ProxyLatencyInfo) error
+}

backend/internal/service/proxy_service.go

@@ -10,6 +10,7 @@ import (
 
 var (
 	ErrProxyNotFound = infraerrors.NotFound("PROXY_NOT_FOUND", "proxy not found")
+	ErrProxyInUse    = infraerrors.Conflict("PROXY_IN_USE", "proxy is in use by accounts")
 )
 
 type ProxyRepository interface {
@@ -26,6 +27,7 @@ type ProxyRepository interface {
 
 	ExistsByHostPortAuth(ctx context.Context, host string, port int, username, password string) (bool, error)
 	CountAccountsByProxyID(ctx context.Context, proxyID int64) (int64, error)
+	ListAccountSummariesByProxyID(ctx context.Context, proxyID int64) ([]ProxyAccountSummary, error)
 }
 
 // CreateProxyRequest 创建代理请求

frontend/src/api/admin/proxies.ts

@@ -4,7 +4,13 @@
  */
 
 import { apiClient } from '../client'
-import type { Proxy, CreateProxyRequest, UpdateProxyRequest, PaginatedResponse } from '@/types'
+import type {
+  Proxy,
+  ProxyAccountSummary,
+  CreateProxyRequest,
+  UpdateProxyRequest,
+  PaginatedResponse
+} from '@/types'
 
 /**
  * List all proxies with pagination
@@ -160,8 +166,8 @@ export async function getStats(id: number): Promise<{
  * @param id - Proxy ID
  * @returns List of accounts using the proxy
  */
-export async function getProxyAccounts(id: number): Promise<PaginatedResponse<any>> {
-  const { data } = await apiClient.get<PaginatedResponse<any>>(`/admin/proxies/${id}/accounts`)
+export async function getProxyAccounts(id: number): Promise<ProxyAccountSummary[]> {
+  const { data } = await apiClient.get<ProxyAccountSummary[]>(`/admin/proxies/${id}/accounts`)
   return data
 }
 
@@ -189,6 +195,17 @@ export async function batchCreate(
   return data
 }
 
+export async function batchDelete(ids: number[]): Promise<{
+  deleted_ids: number[]
+  skipped: Array<{ id: number; reason: string }>
+}> {
+  const { data } = await apiClient.post<{
+    deleted_ids: number[]
+    skipped: Array<{ id: number; reason: string }>
+  }>('/admin/proxies/batch-delete', { ids })
+  return data
+}
+
 export const proxiesAPI = {
   list,
   getAll,
@@ -201,7 +218,8 @@ export const proxiesAPI = {
   testProxy,
   getStats,
   getProxyAccounts,
-  batchCreate
+  batchCreate,
+  batchDelete
 }
 
 export default proxiesAPI

frontend/src/components/common/DataTable.vue

@@ -22,29 +22,36 @@
             ]"
             @click="column.sortable && handleSort(column.key)"
           >
-            <div class="flex items-center space-x-1">
-              <span>{{ column.label }}</span>
-              <span v-if="column.sortable" class="text-gray-400 dark:text-dark-500">
-                <svg
-                  v-if="sortKey === column.key"
-                  class="h-4 w-4"
-                  :class="{ 'rotate-180 transform': sortOrder === 'desc' }"
-                  fill="currentColor"
-                  viewBox="0 0 20 20"
-                >
-                  <path
-                    fill-rule="evenodd"
-                    d="M14.707 12.707a1 1 0 01-1.414 0L10 9.414l-3.293 3.293a1 1 0 01-1.414-1.414l4-4a1 1 0 011.414 0l4 4a1 1 0 010 1.414z"
-                    clip-rule="evenodd"
-                  />
-                </svg>
-                <svg v-else class="h-4 w-4" fill="currentColor" viewBox="0 0 20 20">
-                  <path
-                    d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z"
-                  />
-                </svg>
-              </span>
-            </div>
+            <slot
+              :name="`header-${column.key}`"
+              :column="column"
+              :sort-key="sortKey"
+              :sort-order="sortOrder"
+            >
+              <div class="flex items-center space-x-1">
+                <span>{{ column.label }}</span>
+                <span v-if="column.sortable" class="text-gray-400 dark:text-dark-500">
+                  <svg
+                    v-if="sortKey === column.key"
+                    class="h-4 w-4"
+                    :class="{ 'rotate-180 transform': sortOrder === 'desc' }"
+                    fill="currentColor"
+                    viewBox="0 0 20 20"
+                  >
+                    <path
+                      fill-rule="evenodd"
+                      d="M14.707 12.707a1 1 0 01-1.414 0L10 9.414l-3.293 3.293a1 1 0 01-1.414-1.414l4-4a1 1 0 011.414 0l4 4a1 1 0 010 1.414z"
+                      clip-rule="evenodd"
+                    />
+                  </svg>
+                  <svg v-else class="h-4 w-4" fill="currentColor" viewBox="0 0 20 20">
+                    <path
+                      d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z"
+                    />
+                  </svg>
+                </span>
+              </div>
+            </slot>
           </th>
         </tr>
       </thead>

frontend/src/i18n/locales/en.ts

@@ -1633,11 +1633,29 @@ export default {
         address: 'Address',
         status: 'Status',
         accounts: 'Accounts',
+        latency: 'Latency',
         actions: 'Actions'
       },
       testConnection: 'Test Connection',
       batchTest: 'Test All Proxies',
       testFailed: 'Failed',
+      latencyFailed: 'Connection failed',
+      batchTestEmpty: 'No proxies available for testing',
+      batchTestDone: 'Batch test completed for {count} proxies',
+      batchTestFailed: 'Batch test failed',
+      batchDeleteAction: 'Delete',
+      batchDelete: 'Batch delete',
+      batchDeleteConfirm: 'Delete {count} selected proxies? In-use ones will be skipped.',
+      batchDeleteDone: 'Deleted {deleted} proxies, skipped {skipped}',
+      batchDeleteSkipped: 'Skipped {skipped} proxies',
+      batchDeleteFailed: 'Batch delete failed',
+      deleteBlockedInUse: 'This proxy is in use and cannot be deleted',
+      accountsTitle: 'Accounts using this IP',
+      accountsEmpty: 'No accounts are using this proxy',
+      accountsFailed: 'Failed to load accounts list',
+      accountName: 'Account',
+      accountPlatform: 'Platform',
+      accountNotes: 'Notes',
       name: 'Name',
       protocol: 'Protocol',
       host: 'Host',

frontend/src/i18n/locales/zh.ts

@@ -1719,6 +1719,7 @@ export default {
         address: '地址',
         status: '状态',
         accounts: '账号数',
+        latency: '延迟',
         actions: '操作',
         nameLabel: '名称',
         namePlaceholder: '请输入代理名称',
@@ -1755,11 +1756,32 @@ export default {
       enterProxyName: '请输入代理名称',
       optionalAuth: '可选认证信息',
       leaveEmptyToKeep: '留空保持不变',
+      form: {
+        hostPlaceholder: '请输入主机地址',
+        portPlaceholder: '请输入端口'
+      },
       noProxiesYet: '暂无代理',
       createFirstProxy: '添加您的第一个代理以开始使用。',
       testConnection: '测试连接',
       batchTest: '批量测试',
       testFailed: '失败',
+      latencyFailed: '链接失败',
+      batchTestEmpty: '暂无可测试的代理',
+      batchTestDone: '批量测试完成，共测试 {count} 个代理',
+      batchTestFailed: '批量测试失败',
+      batchDeleteAction: '删除',
+      batchDelete: '批量删除',
+      batchDeleteConfirm: '确定删除选中的 {count} 个代理吗？已被账号使用的将自动跳过。',
+      batchDeleteDone: '已删除 {deleted} 个代理，跳过 {skipped} 个',
+      batchDeleteSkipped: '已跳过 {skipped} 个代理',
+      batchDeleteFailed: '批量删除失败',
+      deleteBlockedInUse: '该代理已有账号使用，无法删除',
+      accountsTitle: '使用该IP的账号',
+      accountsEmpty: '暂无账号使用此代理',
+      accountsFailed: '获取账号列表失败',
+      accountName: '账号名称',
+      accountPlatform: '所属平台',
+      accountNotes: '备注',
       // Batch import
       standardAdd: '标准添加',
       batchAdd: '快捷添加',

frontend/src/types/index.ts

@@ -364,10 +364,21 @@ export interface Proxy {
   password?: string | null
   status: 'active' | 'inactive'
   account_count?: number // Number of accounts using this proxy
+  latency_ms?: number
+  latency_status?: 'success' | 'failed'
+  latency_message?: string
   created_at: string
   updated_at: string
 }
 
+export interface ProxyAccountSummary {
+  id: number
+  name: string
+  platform: AccountPlatform
+  type: AccountType
+  notes?: string | null
+}
+
 // Gemini credentials structure for OAuth and API Key authentication
 export interface GeminiCredentials {
   // API Key authentication