https://github.com/go-gitea/gitea/issues/31102
https://github.com/go-gitea/gitea/pull/31105

add the missing memcache package in the vendor dir,
binding to patch ./gitea-1.22.0-fix-missing-memcache-import.diff

diff --git a/vendor/gitea.com/go-chi/cache/memcache/memcache.go b/vendor/gitea.com/go-chi/cache/memcache/memcache.go
new file mode 100644
index 00000000..7c7cd225
--- /dev/null
+++ b/vendor/gitea.com/go-chi/cache/memcache/memcache.go
@@ -0,0 +1,97 @@
+// Copyright 2013 Beego Authors
+// Copyright 2014 The Macaron Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package cache
+
+import (
+	"strings"
+
+	"github.com/bradfitz/gomemcache/memcache"
+	"github.com/unknwon/com"
+
+	"gitea.com/go-chi/cache"
+)
+
+// MemcacheCacher represents a memcache cache adapter implementation.
+type MemcacheCacher struct {
+	c *memcache.Client
+}
+
+func NewItem(key string, data []byte, expire int32) *memcache.Item {
+	return &memcache.Item{
+		Key:        key,
+		Value:      data,
+		Expiration: expire,
+	}
+}
+
+// Put puts value into cache with key and expire time.
+// If expired is 0, it lives forever.
+func (c *MemcacheCacher) Put(key string, val interface{}, expire int64) error {
+	return c.c.Set(NewItem(key, []byte(com.ToStr(val)), int32(expire)))
+}
+
+// Get gets cached value by given key.
+func (c *MemcacheCacher) Get(key string) interface{} {
+	item, err := c.c.Get(key)
+	if err != nil {
+		return nil
+	}
+	return string(item.Value)
+}
+
+// Delete deletes cached value by given key.
+func (c *MemcacheCacher) Delete(key string) error {
+	return c.c.Delete(key)
+}
+
+// Incr increases cached int-type value by given key as a counter.
+func (c *MemcacheCacher) Incr(key string) error {
+	_, err := c.c.Increment(key, 1)
+	return err
+}
+
+// Decr decreases cached int-type value by given key as a counter.
+func (c *MemcacheCacher) Decr(key string) error {
+	_, err := c.c.Decrement(key, 1)
+	return err
+}
+
+// IsExist returns true if cached value exists.
+func (c *MemcacheCacher) IsExist(key string) bool {
+	_, err := c.c.Get(key)
+	return err == nil
+}
+
+// Flush deletes all cached data.
+func (c *MemcacheCacher) Flush() error {
+	return c.c.FlushAll()
+}
+
+// StartAndGC starts GC routine based on config string settings.
+// AdapterConfig: 127.0.0.1:9090;127.0.0.1:9091
+func (c *MemcacheCacher) StartAndGC(opt cache.Options) error {
+	c.c = memcache.New(strings.Split(opt.AdapterConfig, ";")...)
+	return nil
+}
+
+// Ping tests if the cache is alive.
+func (c *MemcacheCacher) Ping() error {
+	return cache.GenericPing(c)
+}
+
+func init() {
+	cache.Register("memcache", &MemcacheCacher{})
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 144a505d..6cb3f48b 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -40,6 +40,7 @@ gitea.com/go-chi/binding
 # gitea.com/go-chi/cache v0.2.0
 ## explicit; go 1.11
 gitea.com/go-chi/cache
+gitea.com/go-chi/cache/memcache
 # gitea.com/go-chi/captcha v0.0.0-20240315150714-fb487f629098
 ## explicit; go 1.21
 gitea.com/go-chi/captcha