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refactor(P3): Redis 缓存键版本化 — Client 增加 Key() 方法，默认前缀 v1:

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This commit is contained in:
Sisyphus
2026-04-25 16:57:02 +08:00
parent 41ae86f908
commit dd47b48473
7 changed files with 544 additions and 536 deletions
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28
backend/internal/feed/service.go
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@@ -44,7 +44,7 @@ func (f *FeedService) GetVideoByIDs(ctx context.Context, videoIDs []uint) ([]*vi
//L1:本地缓存
var missedL1 []uint
for _, id := range videoIDs {
cacheKey := fmt.Sprintf("video:entity:%d", id)
cacheKey := f.rediscache.Key("video:entity:%d", id)
if f.localcache != nil {
if v, found := f.localcache.Get(cacheKey); found {
if data, ok := v.(video.Video); ok {
@@ -66,7 +66,7 @@ func (f *FeedService) GetVideoByIDs(ctx context.Context, videoIDs []uint) ([]*vi
if len(missedL1) > 0 {
cacheKeys := make([]string, len(missedL1))
for i, id := range missedL1 {
cacheKeys[i] = fmt.Sprintf("video:entity:%d", id)
cacheKeys[i] = f.rediscache.Key("video:entity:%d", id)
}
cacheCtx, cancel := context.WithTimeout(ctx, 50*time.Millisecond)
@@ -109,7 +109,7 @@ func (f *FeedService) GetVideoByIDs(ctx context.Context, videoIDs []uint) ([]*vi
wg.Add(1)
go func(videoID uint) {
defer wg.Done()
sfKey := fmt.Sprintf("sf:entity:%d", videoID)
sfKey := f.rediscache.Key("sf:entity:%d", videoID)
v, err, _ := f.requestGroup.Do(sfKey, func() (interface{}, error) {
videoList, err := f.repo.GetByIDs(ctx, []uint{videoID})
@@ -119,7 +119,7 @@ func (f *FeedService) GetVideoByIDs(ctx context.Context, videoIDs []uint) ([]*vi
}
safeCopy := *videoList[0]
cachekey := fmt.Sprintf("video:entity:%d", safeCopy.ID)
cachekey := f.rediscache.Key("video:entity:%d", safeCopy.ID)
if b, err := json.Marshal(safeCopy); err == nil {
//异步回写redis
go func(k string, b []byte) {
@@ -137,7 +137,7 @@ func (f *FeedService) GetVideoByIDs(ctx context.Context, videoIDs []uint) ([]*vi
mu.Lock()
videoMap[id] = &safeCopy
mu.Unlock()
f.localcache.Set(fmt.Sprintf("video:entity:%d", safeCopy.ID), safeCopy, 5*time.Second)
f.localcache.Set(f.rediscache.Key("video:entity:%d", safeCopy.ID), safeCopy, 5*time.Second)
}
}(id)
}
@@ -148,7 +148,7 @@ func (f *FeedService) GetVideoByIDs(ctx context.Context, videoIDs []uint) ([]*vi
// 查询最新视频 (冷热分离 + 游标分页)
func (f *FeedService) ListLatest(ctx context.Context, limit int, latestBefore time.Time, viewerAccountID uint) (ListLatestResponse, error) {
// 获取 ZSET 中最老的一条数据
zsetTail, err := f.rediscache.ZRangeWithScores(ctx, "feed:global_timeline", 0, 0)
zsetTail, err := f.rediscache.ZRangeWithScores(ctx, f.rediscache.Key("feed:global_timeline"), 0, 0)
if err != nil {
return ListLatestResponse{}, err
@@ -158,7 +158,7 @@ func (f *FeedService) ListLatest(ctx context.Context, limit int, latestBefore ti
if isZsetEmpty {
//全局静态锁：无视所有用户的不同时间戳游标
sfKey := "sf:fallback:global_timeline_rebuild"
sfKey := f.rediscache.Key("sf:fallback:global_timeline_rebuild")
v, err, _ := f.requestGroup.Do(sfKey, func() (interface{}, error) {
// 无视游标，直接去 MySQL 捞最新的 1000 条
@@ -180,7 +180,7 @@ func (f *FeedService) ListLatest(ctx context.Context, limit int, latestBefore ti
Member: fmt.Sprintf("%d", vid.ID),
})
}
f.rediscache.ZAdd(bgCtx, "feed:global_timeline", zElements...)
f.rediscache.ZAdd(bgCtx, f.rediscache.Key("feed:global_timeline"), zElements...)
return "SUCCESS", nil
})
@@ -207,7 +207,7 @@ func (f *FeedService) ListLatest(ctx context.Context, limit int, latestBefore ti
//冷数据降级查库
// 针对个别用户的防并发（此时可以用时间戳做锁，因为冷尾流量极小）
sfKey := fmt.Sprintf("sf:cold:listLatest:%d:%d", limit, reqTime)
sfKey := f.rediscache.Key("sf:cold:listLatest:%d:%d", limit, reqTime)
v, err, _ := f.requestGroup.Do(sfKey, func() (interface{}, error) {
return f.repo.ListLatest(ctx, limit, latestBefore)
})
@@ -224,7 +224,7 @@ func (f *FeedService) ListLatest(ctx context.Context, limit int, latestBefore ti
maxScore = fmt.Sprintf("%d", reqTime-1) // 防重复
}
videoIDsStr, err := f.rediscache.ZRevRangeByScore(ctx, "feed:global_timeline", maxScore, "-inf", 0, int64(limit))
videoIDsStr, err := f.rediscache.ZRevRangeByScore(ctx, f.rediscache.Key("feed:global_timeline"), maxScore, "-inf", 0, int64(limit))
if err != nil {
return ListLatestResponse{}, err
}
@@ -254,7 +254,7 @@ func (f *FeedService) ListLatest(ctx context.Context, limit int, latestBefore ti
coldCursor = latestBefore
}
sfKey := fmt.Sprintf("sf:stitch:listLatest:%d:%d", remainLimit, coldCursor.UnixMilli())
sfKey := f.rediscache.Key("sf:stitch:listLatest:%d:%d", remainLimit, coldCursor.UnixMilli())
v, err, _ := f.requestGroup.Do(sfKey, func() (interface{}, error) {
return f.repo.ListLatest(ctx, remainLimit, coldCursor)
})
@@ -343,7 +343,7 @@ func (f *FeedService) ListByFollowing(ctx context.Context, limit int, latestBefo
if !latestBefore.IsZero() {
before = latestBefore.Unix()
}
cacheKey = fmt.Sprintf("feed:listByFollowing:limit=%d:accountID=%d:before=%d", limit, viewerAccountID, before)
cacheKey = f.rediscache.Key("feed:listByFollowing:limit=%d:accountID=%d:before=%d", limit, viewerAccountID, before)
cacheCtx, cancel := context.WithTimeout(ctx, 50*time.Millisecond)
defer cancel()
@@ -413,10 +413,10 @@ func (f *FeedService) ListByPopularity(ctx context.Context, limit int, reqAsOf i
const win = 60
keys := make([]string, 0, win)
for i := 0; i < win; i++ {
keys = append(keys, "hot:video:1m:"+asOf.Add(-time.Duration(i)*time.Minute).Format("200601021504"))
keys = append(keys, f.rediscache.Key("hot:video:1m:%s", asOf.Add(-time.Duration(i)*time.Minute).Format("200601021504")))
}
dest := "hot:video:merge:1m:" + asOf.Format("200601021504") // 快照key：同一个as_of页内复用
dest := f.rediscache.Key("hot:video:merge:1m:%s", asOf.Format("200601021504")) // 快照key：同一个as_of页内复用
opCtx, cancel := context.WithTimeout(ctx, 80*time.Millisecond)
defer cancel()