chore: remove cache options

Cache was not working correctly, added more complexity and actually made response times slower. Because of this, I'm removing all cache options until we figure out a better solution.

Resolves https://kolaente.dev/vikunja/api/issues/1496
Resolves https://kolaente.dev/vikunja/api/issues/907

pkg/config/config.go

@@ -87,10 +87,6 @@ const (
 	DatabaseSslRootCert           Key = `database.sslrootcert`
 	DatabaseTLS                   Key = `database.tls`
 
-	CacheEnabled        Key = `cache.enabled`
-	CacheType           Key = `cache.type`
-	CacheMaxElementSize Key = `cache.maxelementsize`
-
 	MailerEnabled       Key = `mailer.enabled`
 	MailerHost          Key = `mailer.host`
 	MailerPort          Key = `mailer.port`
@@ -321,10 +317,6 @@ func InitDefaultConfig() {
 	DatabaseSslRootCert.setDefault("")
 	DatabaseTLS.setDefault("false")
 
-	// Cacher
-	CacheEnabled.setDefault(false)
-	CacheType.setDefault("memory")
-	CacheMaxElementSize.setDefault(1000)
 	// Mailer
 	MailerEnabled.setDefault(false)
 	MailerHost.setDefault("")
@@ -425,10 +417,6 @@ func InitConfig() {
 		log.Println("No config file found, using default or config from environment variables.")
 	}
 
-	if CacheType.GetString() == "keyvalue" {
-		CacheType.Set(KeyvalueType.GetString())
-	}
-
 	if RateLimitStore.GetString() == "keyvalue" {
 		RateLimitStore.Set(KeyvalueType.GetString())
 	}

pkg/db/db.go

@@ -17,7 +17,6 @@
 package db
 
 import (
-	"encoding/gob"
 	"fmt"
 	"net/url"
 	"os"
@@ -27,9 +26,7 @@ import (
 
 	"code.vikunja.io/api/pkg/config"
 	"code.vikunja.io/api/pkg/log"
-	xrc "gitea.com/xorm/xorm-redis-cache"
 	"xorm.io/xorm"
-	"xorm.io/xorm/caches"
 	"xorm.io/xorm/names"
 	"xorm.io/xorm/schemas"
 
@@ -85,30 +82,10 @@ func CreateDBEngine() (engine *xorm.Engine, err error) {
 	logger := log.NewXormLogger("")
 	engine.SetLogger(logger)
 
-	// Cache
-	// We have to initialize the cache here to avoid import cycles
-	if config.CacheEnabled.GetBool() {
-		switch config.CacheType.GetString() {
-		case "memory":
-			cacher := caches.NewLRUCacher(caches.NewMemoryStore(), config.CacheMaxElementSize.GetInt())
-			engine.SetDefaultCacher(cacher)
-		case "redis":
-			cacher := xrc.NewRedisCacher(config.RedisHost.GetString(), config.RedisPassword.GetString(), xrc.DEFAULT_EXPIRATION, engine.Logger())
-			engine.SetDefaultCacher(cacher)
-		default:
-			log.Info("Did not find a valid cache type. Caching disabled. Please refer to the docs for poosible cache types.")
-		}
-	}
-
 	x = engine
 	return
 }
 
-// RegisterTableStructsForCache registers tables in gob encoding for redis cache
-func RegisterTableStructsForCache(val interface{}) {
-	gob.Register(val)
-}
-
 func initMysqlEngine() (engine *xorm.Engine, err error) {
 	// We're using utf8mb here instead of just utf8 because we want to use non-BMP characters.
 	// See https://stackoverflow.com/a/30074553/10924593 for more info.

pkg/files/db.go

@@ -17,7 +17,6 @@
 package files
 
 import (
-	"code.vikunja.io/api/pkg/config"
 	"code.vikunja.io/api/pkg/db"
 	"code.vikunja.io/api/pkg/log"
 	"xorm.io/xorm"
@@ -33,11 +32,6 @@ func SetEngine() (err error) {
 		return
 	}
 
-	// Cache
-	if config.CacheEnabled.GetBool() && config.CacheType.GetString() == "redis" {
-		db.RegisterTableStructsForCache(GetTables())
-	}
-
 	return nil
 }
 

pkg/initialize/init.go

@@ -29,8 +29,6 @@ import (
 	"code.vikunja.io/api/pkg/models"
 	"code.vikunja.io/api/pkg/modules/auth/openid"
 	"code.vikunja.io/api/pkg/modules/keyvalue"
-	migrator "code.vikunja.io/api/pkg/modules/migration"
-	"code.vikunja.io/api/pkg/notifications"
 	"code.vikunja.io/api/pkg/red"
 	"code.vikunja.io/api/pkg/user"
 )
@@ -56,22 +54,10 @@ func InitEngines() {
 	if err != nil {
 		log.Fatal(err.Error())
 	}
-	err = user.InitDB()
-	if err != nil {
-		log.Fatal(err.Error())
-	}
 	err = files.SetEngine()
 	if err != nil {
 		log.Fatal(err.Error())
 	}
-	err = migrator.InitDB()
-	if err != nil {
-		log.Fatal(err.Error())
-	}
-	err = notifications.InitDB()
-	if err != nil {
-		log.Fatal(err.Error())
-	}
 }
 
 // FullInit initializes all kinds of things in the right order

pkg/models/models.go

@@ -69,11 +69,6 @@ func SetEngine() (err error) {
 		return
 	}
 
-	// Cache
-	if config.CacheEnabled.GetBool() && config.CacheType.GetString() == "redis" {
-		db.RegisterTableStructsForCache(GetTables())
-	}
-
 	return nil
 }
 

pkg/modules/migration/db.go

@@ -16,21 +16,6 @@
 
 package migration
 
-import (
-	"code.vikunja.io/api/pkg/config"
-	"code.vikunja.io/api/pkg/db"
-)
-
-// InitDB sets up the database connection to use in this module
-func InitDB() (err error) {
-	// Cache
-	if config.CacheEnabled.GetBool() && config.CacheType.GetString() == "redis" {
-		db.RegisterTableStructsForCache(GetTables())
-	}
-
-	return nil
-}
-
 // GetTables returns all structs which are also a table.
 func GetTables() []interface{} {
 	return []interface{}{

pkg/notifications/db.go

@@ -16,21 +16,6 @@
 
 package notifications
 
-import (
-	"code.vikunja.io/api/pkg/config"
-	"code.vikunja.io/api/pkg/db"
-)
-
-// InitDB sets up the database connection to use in this module
-func InitDB() (err error) {
-	// Cache
-	if config.CacheEnabled.GetBool() && config.CacheType.GetString() == "redis" {
-		db.RegisterTableStructsForCache(GetTables())
-	}
-
-	return nil
-}
-
 // GetTables returns all structs which are also a table.
 func GetTables() []interface{} {
 	return []interface{}{

pkg/user/db.go

@@ -16,21 +16,6 @@
 
 package user
 
-import (
-	"code.vikunja.io/api/pkg/config"
-	"code.vikunja.io/api/pkg/db"
-)
-
-// InitDB sets up the database connection to use in this module
-func InitDB() (err error) {
-	// Cache
-	if config.CacheEnabled.GetBool() && config.CacheType.GetString() == "redis" {
-		db.RegisterTableStructsForCache(GetTables())
-	}
-
-	return nil
-}
-
 // GetTables returns all structs which are also a table.
 func GetTables() []interface{} {
 	return []interface{}{