mirror of
https://github.com/go-gitea/gitea.git
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bea6fcaa84
The `gitea.com/go-chi/cache` package only exists for Gitea, so it moves into `modules/cache`. - `ITEM_TTL = -1` disables caching as documented - Sub-second TTLs round up instead of never expiring - The Redis adapter no longer grows a `MacaronCache` hash - Use two-queue cache for in-memory cache Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
// Copyright 2026 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package cache
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import (
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"errors"
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"fmt"
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"math"
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"strings"
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"github.com/bradfitz/gomemcache/memcache"
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)
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const memcacheMaxRelativeTTL = 30 * 24 * 60 * 60
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type memcacheCache struct {
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client *memcache.Client
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}
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func newMemcacheCache(conn string) (backend, error) {
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if conn == "" {
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return nil, errors.New("cache adapter memcache requires [cache] HOST, e.g. 127.0.0.1:11211")
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}
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servers := &memcache.ServerList{}
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if err := servers.SetServers(strings.Split(conn, ";")...); err != nil {
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return nil, fmt.Errorf("invalid memcache HOST %q: %w", conn, err)
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}
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return &memcacheCache{client: memcache.NewFromSelector(servers)}, nil
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}
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// memcacheExpiration converts a TTL beyond memcached's 30-day relative limit into an absolute unix time
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func memcacheExpiration(ttl int64) int32 {
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if ttl > memcacheMaxRelativeTTL {
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ttl += timeNow().Unix()
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}
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return int32(min(ttl, math.MaxInt32))
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}
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func (c *memcacheCache) Get(key string) (string, bool) {
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item, err := c.client.Get(key)
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if err != nil {
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return "", false
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}
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return string(item.Value), true
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}
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func (c *memcacheCache) Put(key, value string, ttl int64) error {
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return c.client.Set(&memcache.Item{Key: key, Value: []byte(value), Expiration: memcacheExpiration(ttl)})
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}
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func (c *memcacheCache) Delete(key string) error {
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if err := c.client.Delete(key); err != nil && !errors.Is(err, memcache.ErrCacheMiss) {
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return err
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}
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return nil
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}
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func (c *memcacheCache) IsExist(key string) bool {
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_, err := c.client.Get(key)
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return err == nil
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}
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func (c *memcacheCache) Ping() error {
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const key = "__gitea_cache_ping"
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if err := c.Put(key, "ping", 10); err != nil {
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return err
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}
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return c.Delete(key)
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}
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