Always enable caches (#28527)

Nowadays, cache will be used on almost everywhere of Gitea and it cannot
be disabled, otherwise some features will become unaviable.

Then I think we can just remove the option for cache enable. That means
cache cannot be disabled.
But of course, we can still use cache configuration to set how should
Gitea use the cache.

custom/conf/app.example.ini

@@ -1705,9 +1705,6 @@ LEVEL = Info
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;
-;; if the cache enabled
-;ENABLED = true
-;;
 ;; Either "memory", "redis", "memcache", or "twoqueue". default is "memory"
 ;ADAPTER = memory
 ;;
@@ -1732,8 +1729,6 @@ LEVEL = Info
 ;[cache.last_commit]
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; if the cache enabled
-;ENABLED = true
 ;;
 ;; Time to keep items in cache if not used, default is 8760 hours.
 ;; Setting it to -1 disables caching

docs/content/administration/config-cheat-sheet.en-us.md

@@ -763,7 +763,6 @@ and
 
 ## Cache (`cache`)
 
-- `ENABLED`: **true**: Enable the cache.
 - `ADAPTER`: **memory**: Cache engine adapter, either `memory`, `redis`, `redis-cluster`, `twoqueue` or `memcache`. (`twoqueue` represents a size limited LRU cache.)
 - `INTERVAL`: **60**: Garbage Collection interval (sec), for memory and twoqueue cache only.
 - `HOST`: **_empty_**: Connection string for `redis`, `redis-cluster` and `memcache`. For `twoqueue` sets configuration for the queue.
@@ -775,7 +774,6 @@ and
 
 ## Cache - LastCommitCache settings (`cache.last_commit`)
 
-- `ENABLED`: **true**: Enable the cache.
 - `ITEM_TTL`: **8760h**: Time to keep items in cache if not used, Setting it to -1 disables caching.
 - `COMMITS_COUNT`: **1000**: Only enable the cache when repository's commits count great than.
 

docs/content/administration/config-cheat-sheet.zh-cn.md

@@ -721,7 +721,6 @@ Gitea 创建以下非唯一队列：
 
 ## 缓存 (`cache`)
 
-- `ENABLED`: **true**: 是否启用缓存。
 - `ADAPTER`: **memory**: 缓存引擎，可以为 `memory`, `redis`, `redis-cluster`, `twoqueue` 和 `memcache`. (`twoqueue` 代表缓冲区固定的LRU缓存)
 - `INTERVAL`: **60**: 垃圾回收间隔(秒)，只对`memory`和`towqueue`有效。
 - `HOST`: **_empty_**: 缓存配置。`redis`, `redis-cluster`，`memcache`配置连接字符串;`twoqueue` 设置队列参数
@@ -733,7 +732,6 @@ Gitea 创建以下非唯一队列：
 
 ### 缓存 - 最后提交缓存设置 (`cache.last_commit`)
 
-- `ENABLED`: **true**：是否启用缓存。
 - `ITEM_TTL`: **8760h**：如果未使用，保持缓存中的项目的时间，将其设置为 -1 会禁用缓存。
 - `COMMITS_COUNT`: **1000**：仅在存储库的提交计数大于时启用缓存。
 

modules/cache/cache.go

@@ -24,11 +24,11 @@ func newCache(cacheConfig setting.Cache) (mc.Cache, error) {
 	})
 }
 
-// NewContext start cache service
+// Init start cache service
-func NewContext() error {
+func Init() error {
 	var err error
 
-	if conn == nil && setting.CacheService.Enabled {
+	if conn == nil {
 		if conn, err = newCache(setting.CacheService.Cache); err != nil {
 			return err
 		}

modules/cache/cache_test.go

@@ -22,9 +22,9 @@ func createTestCache() {
 }
 
 func TestNewContext(t *testing.T) {
-	assert.NoError(t, NewContext())
+	assert.NoError(t, Init())
 
-	setting.CacheService.Cache = setting.Cache{Enabled: true, Adapter: "redis", Conn: "some random string"}
+	setting.CacheService.Cache = setting.Cache{Adapter: "redis", Conn: "some random string"}
 	con, err := newCache(setting.Cache{
 		Adapter:  "rand",
 		Conn:     "false conf",

modules/git/last_commit_cache.go

@@ -39,7 +39,7 @@ func NewLastCommitCache(count int64, repoPath string, gitRepo *Repository, cache
 	if cache == nil {
 		return nil
 	}
-	if !setting.CacheService.LastCommit.Enabled || count < setting.CacheService.LastCommit.CommitsCount {
+	if count < setting.CacheService.LastCommit.CommitsCount {
 		return nil
 	}
 

modules/setting/cache.go

@@ -12,7 +12,6 @@ import (
 
 // Cache represents cache settings
 type Cache struct {
-	Enabled  bool
 	Adapter  string
 	Interval int
 	Conn     string
@@ -24,23 +23,19 @@ var CacheService = struct {
 	Cache `ini:"cache"`
 
 	LastCommit struct {
-		Enabled      bool
 		TTL          time.Duration `ini:"ITEM_TTL"`
 		CommitsCount int64
 	} `ini:"cache.last_commit"`
 }{
 	Cache: Cache{
-		Enabled:  true,
 		Adapter:  "memory",
 		Interval: 60,
 		TTL:      16 * time.Hour,
 	},
 	LastCommit: struct {
-		Enabled      bool
 		TTL          time.Duration `ini:"ITEM_TTL"`
 		CommitsCount int64
 	}{
-		Enabled:      true,
 		TTL:          8760 * time.Hour,
 		CommitsCount: 1000,
 	},
@@ -65,30 +60,12 @@ func loadCacheFrom(rootCfg ConfigProvider) {
 		if CacheService.Conn == "" {
 			CacheService.Conn = "50000"
 		}
-	case "": // disable cache
-		CacheService.Enabled = false
 	default:
 		log.Fatal("Unknown cache adapter: %s", CacheService.Adapter)
 	}
 
-	if CacheService.Enabled {
-		log.Info("Cache Service Enabled")
-	} else {
-		log.Warn("Cache Service Disabled so that captcha disabled too")
-		// captcha depends on cache service
-		Service.EnableCaptcha = false
-	}
-
 	sec = rootCfg.Section("cache.last_commit")
-	if !CacheService.Enabled {
-		CacheService.LastCommit.Enabled = false
-	}
-
 	CacheService.LastCommit.CommitsCount = sec.Key("COMMITS_COUNT").MustInt64(1000)
-
-	if CacheService.LastCommit.Enabled {
-		log.Info("Last Commit Cache Service Enabled")
-	}
 }
 
 // TTLSeconds returns the TTLSeconds or unix timestamp for memcache

routers/api/v1/misc/nodeinfo.go

@@ -29,10 +29,9 @@ func NodeInfo(ctx *context.APIContext) {
 
 	nodeInfoUsage := structs.NodeInfoUsage{}
 	if setting.Federation.ShareUserStatistics {
-		cached := false
+		var cached bool
-		if setting.CacheService.Enabled {
 		nodeInfoUsage, cached = ctx.Cache.Get(cacheKeyNodeInfoUsage).(structs.NodeInfoUsage)
-		}
+
 		if !cached {
 			usersTotal := int(user_model.CountUsers(ctx, nil))
 			now := time.Now()
@@ -53,14 +52,13 @@ func NodeInfo(ctx *context.APIContext) {
 				LocalPosts:    int(allIssues),
 				LocalComments: int(allComments),
 			}
-			if setting.CacheService.Enabled {
+
 			if err := ctx.Cache.Put(cacheKeyNodeInfoUsage, nodeInfoUsage, 180); err != nil {
 				ctx.InternalServerError(err)
 				return
 			}
 		}
 	}
-	}
 
 	nodeInfo := &structs.NodeInfo{
 		Version: "2.1",

routers/init.go

@@ -118,7 +118,7 @@ func InitWebInstalled(ctx context.Context) {
 	mustInit(storage.Init)
 
 	mailer.NewContext(ctx)
-	mustInit(cache.NewContext)
+	mustInit(cache.Init)
 	mustInit(feed_service.Init)
 	mustInit(uinotification.Init)
 	mustInitCtx(ctx, archiver.Init)

routers/web/auth/auth.go

@@ -622,11 +622,9 @@ func handleUserCreated(ctx *context.Context, u *user_model.User, gothUser *goth.
 		ctx.Data["ActiveCodeLives"] = timeutil.MinutesToFriendly(setting.Service.ActiveCodeLives, ctx.Locale)
 		ctx.HTML(http.StatusOK, TplActivate)
 
-		if setting.CacheService.Enabled {
 		if err := ctx.Cache.Put("MailResendLimit_"+u.LowerName, u.LowerName, 180); err != nil {
 			log.Error("Set cache(MailResendLimit) fail: %v", err)
 		}
-		}
 		return false
 	}
 
@@ -645,18 +643,16 @@ func Activate(ctx *context.Context) {
 		}
 		// Resend confirmation email.
 		if setting.Service.RegisterEmailConfirm {
-			if setting.CacheService.Enabled && ctx.Cache.IsExist("MailResendLimit_"+ctx.Doer.LowerName) {
+			if ctx.Cache.IsExist("MailResendLimit_" + ctx.Doer.LowerName) {
 				ctx.Data["ResendLimited"] = true
 			} else {
 				ctx.Data["ActiveCodeLives"] = timeutil.MinutesToFriendly(setting.Service.ActiveCodeLives, ctx.Locale)
 				mailer.SendActivateAccountMail(ctx.Locale, ctx.Doer)
 
-				if setting.CacheService.Enabled {
 				if err := ctx.Cache.Put("MailResendLimit_"+ctx.Doer.LowerName, ctx.Doer.LowerName, 180); err != nil {
 					log.Error("Set cache(MailResendLimit) fail: %v", err)
 				}
 			}
-			}
 		} else {
 			ctx.Data["ServiceNotEnabled"] = true
 		}
@@ -789,7 +785,7 @@ func ActivateEmail(ctx *context.Context) {
 
 		if u, err := user_model.GetUserByID(ctx, email.UID); err != nil {
 			log.Warn("GetUserByID: %d", email.UID)
-		} else if setting.CacheService.Enabled {
+		} else {
 			// Allow user to validate more emails
 			_ = ctx.Cache.Delete("MailResendLimit_" + u.LowerName)
 		}

routers/web/auth/password.go

@@ -79,7 +79,7 @@ func ForgotPasswdPost(ctx *context.Context) {
 		return
 	}
 
-	if setting.CacheService.Enabled && ctx.Cache.IsExist("MailResendLimit_"+u.LowerName) {
+	if ctx.Cache.IsExist("MailResendLimit_" + u.LowerName) {
 		ctx.Data["ResendLimited"] = true
 		ctx.HTML(http.StatusOK, tplForgotPassword)
 		return
@@ -87,11 +87,9 @@ func ForgotPasswdPost(ctx *context.Context) {
 
 	mailer.SendResetPasswordMail(u)
 
-	if setting.CacheService.Enabled {
 	if err = ctx.Cache.Put("MailResendLimit_"+u.LowerName, u.LowerName, 180); err != nil {
 		log.Error("Set cache(MailResendLimit) fail: %v", err)
 	}
-	}
 
 	ctx.Data["ResetPwdCodeLives"] = timeutil.MinutesToFriendly(setting.Service.ResetPwdCodeLives, ctx.Locale)
 	ctx.Data["IsResetSent"] = true

routers/web/healthcheck/check.go

@@ -121,10 +121,6 @@ func checkDatabase(ctx context.Context, checks checks) status {
 
 // cache checks gitea cache status
 func checkCache(checks checks) status {
-	if !setting.CacheService.Enabled {
-		return pass
-	}
-
 	st := componentStatus{}
 	if err := cache.GetCache().Ping(); err != nil {
 		st.Status = fail

routers/web/user/setting/account.go

@@ -105,7 +105,7 @@ func EmailPost(ctx *context.Context) {
 	// Send activation Email
 	if ctx.FormString("_method") == "SENDACTIVATION" {
 		var address string
-		if setting.CacheService.Enabled && ctx.Cache.IsExist("MailResendLimit_"+ctx.Doer.LowerName) {
+		if ctx.Cache.IsExist("MailResendLimit_" + ctx.Doer.LowerName) {
 			log.Error("Send activation: activation still pending")
 			ctx.Redirect(setting.AppSubURL + "/user/settings/account")
 			return
@@ -141,11 +141,10 @@ func EmailPost(ctx *context.Context) {
 		}
 		address = email.Email
 
-		if setting.CacheService.Enabled {
 		if err := ctx.Cache.Put("MailResendLimit_"+ctx.Doer.LowerName, ctx.Doer.LowerName, 180); err != nil {
 			log.Error("Set cache(MailResendLimit) fail: %v", err)
 		}
-		}
+
 		ctx.Flash.Info(ctx.Tr("settings.add_email_confirmation_sent", address, timeutil.MinutesToFriendly(setting.Service.ActiveCodeLives, ctx.Locale)))
 		ctx.Redirect(setting.AppSubURL + "/user/settings/account")
 		return
@@ -204,11 +203,10 @@ func EmailPost(ctx *context.Context) {
 	// Send confirmation email
 	if setting.Service.RegisterEmailConfirm {
 		mailer.SendActivateEmailMail(ctx.Doer, email)
-		if setting.CacheService.Enabled {
 		if err := ctx.Cache.Put("MailResendLimit_"+ctx.Doer.LowerName, ctx.Doer.LowerName, 180); err != nil {
 			log.Error("Set cache(MailResendLimit) fail: %v", err)
 		}
-		}
+
 		ctx.Flash.Info(ctx.Tr("settings.add_email_confirmation_sent", email.Email, timeutil.MinutesToFriendly(setting.Service.ActiveCodeLives, ctx.Locale)))
 	} else {
 		ctx.Flash.Success(ctx.Tr("settings.add_email_success"))
@@ -276,7 +274,7 @@ func loadAccountData(ctx *context.Context) {
 		user_model.EmailAddress
 		CanBePrimary bool
 	}
-	pendingActivation := setting.CacheService.Enabled && ctx.Cache.IsExist("MailResendLimit_"+ctx.Doer.LowerName)
+	pendingActivation := ctx.Cache.IsExist("MailResendLimit_" + ctx.Doer.LowerName)
 	emails := make([]*UserEmail, len(emlist))
 	for i, em := range emlist {
 		var email UserEmail

services/repository/cache.go

@@ -9,15 +9,10 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/modules/cache"
 	"code.gitea.io/gitea/modules/git"
-	"code.gitea.io/gitea/modules/setting"
 )
 
 // CacheRef cachhe last commit information of the branch or the tag
 func CacheRef(ctx context.Context, repo *repo_model.Repository, gitRepo *git.Repository, fullRefName git.RefName) error {
-	if !setting.CacheService.LastCommit.Enabled {
-		return nil
-	}
-
 	commit, err := gitRepo.GetCommit(fullRefName.String())
 	if err != nil {
 		return err