87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
package dao
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import (
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"context"
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"time"
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"go-common/app/service/main/relation/model"
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"go-common/library/log"
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"go-common/library/stat/prom"
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"github.com/bluele/gcache"
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"github.com/pkg/errors"
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)
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func (d *Dao) loadStat(ctx context.Context, mid int64) (*model.Stat, error) {
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stat, err := d.statCache(ctx, mid)
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if err != nil {
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return nil, err
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}
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d.storeStat(mid, stat)
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return stat, nil
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}
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func (d *Dao) storeStat(mid int64, stat *model.Stat) {
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if stat == nil || stat.Follower < int64(d.c.StatCache.LeastFollower) {
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return
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}
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d.statStore.SetWithExpire(mid, stat, time.Duration(d.c.StatCache.Expire))
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}
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func (d *Dao) localStat(mid int64) (*model.Stat, error) {
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prom.CacheHit.Incr("local_stat_cache")
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item, err := d.statStore.Get(mid)
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if err != nil {
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prom.CacheMiss.Incr("local_stat_cache")
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return nil, err
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}
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stat, ok := item.(*model.Stat)
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if !ok {
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prom.CacheMiss.Incr("local_stat_cache")
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return nil, errors.New("Not a stat")
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}
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return stat, nil
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}
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// StatCache get stat cache.
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func (d *Dao) StatCache(c context.Context, mid int64) (*model.Stat, error) {
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stat, err := d.localStat(mid)
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if err != nil {
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if err != gcache.KeyNotFoundError {
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log.Error("Failed to get stat from local: mid: %d: %+v", mid, err)
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}
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return d.loadStat(c, mid)
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}
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return stat, nil
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}
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// StatsCache get multi stat cache.
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func (d *Dao) StatsCache(c context.Context, mids []int64) (map[int64]*model.Stat, []int64, error) {
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stats := make(map[int64]*model.Stat, len(mids))
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lcMissed := make([]int64, 0, len(mids))
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for _, mid := range mids {
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stat, err := d.localStat(mid)
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if err != nil {
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if err != gcache.KeyNotFoundError {
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log.Error("Failed to get stat from local: mid: %d: %+v", mid, err)
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}
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lcMissed = append(lcMissed, mid)
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continue
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}
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stats[stat.Mid] = stat
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}
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if len(lcMissed) == 0 {
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return stats, nil, nil
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}
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mcStats, mcMissed, err := d.statsCache(c, lcMissed)
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if err != nil {
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return nil, nil, err
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}
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for _, stat := range mcStats {
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d.storeStat(stat.Mid, stat)
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stats[stat.Mid] = stat
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}
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return stats, mcMissed, nil
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}
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