Victor_Jay
97adf54d6d
## CI 修复 (P0/P1) P0 — 编译阻塞: - interfaces.go: postUseCase ISP 接口移除不用的 Create/Update/Delete P1 — 必须修复: - ST1000: 为 13 个包添加包注释 (common/config/model/service/...) - ST1005: redis_store.go 全部错误消息改为小写开头 - errcheck (19处): defer Close()→闭包忽略, notifier.Create→_=, r.Run→检查error - errorlint (9处): switch-on-error→errors.Is 链, ==→errors.Is - ST1020/ST1022: 导出符号注释以符号名开头 P2 — 安全评审: - gosec (12处): G203/G301/G304/G306 添加 nolint 注释并附理由 P3 — 清理: - unused: 移除 hasUnicode/energyStore/current/energyAdminUseCase - gofumpt + goimports 全量格式化 (35+ 文件)
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
// Package cache 提供首页等热点数据的内存缓存层。
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package cache
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import (
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"sync"
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"time"
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"metazone.cc/mce/internal/model"
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)
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// HomePageCache 首页内存缓存，30 秒 TTL，创建/更新/删除/审核通过时失效
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type HomePageCache struct {
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mu sync.RWMutex
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posts []model.Post
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total int64
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expires time.Time
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ttl time.Duration
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}
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// NewHomePageCache 创建首页缓存，ttl 为缓存有效期
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func NewHomePageCache(ttl time.Duration) *HomePageCache {
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return &HomePageCache{ttl: ttl}
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}
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// Get 返回缓存数据，ok=false 表示缓存未命中或已过期
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func (c *HomePageCache) Get() (posts []model.Post, total int64, ok bool) {
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c.mu.RLock()
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defer c.mu.RUnlock()
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if time.Now().After(c.expires) {
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return nil, 0, false
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}
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// 返回浅拷贝以防止调用方修改缓存内部数据
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copied := make([]model.Post, len(c.posts))
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copy(copied, c.posts)
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return copied, c.total, true
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}
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// Set 写入缓存数据
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func (c *HomePageCache) Set(posts []model.Post, total int64) {
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c.mu.Lock()
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defer c.mu.Unlock()
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// 深拷贝一份避免外部修改影响缓存
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c.posts = make([]model.Post, len(posts))
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copy(c.posts, posts)
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c.total = total
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c.expires = time.Now().Add(c.ttl)
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}
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// Invalidate 主动失效缓存
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func (c *HomePageCache) Invalidate() {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.posts = nil
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c.total = 0
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c.expires = time.Time{}
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}
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