51 lines
957 B
Go
51 lines
957 B
Go
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package recommend
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import (
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"context"
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"strconv"
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"go-common/library/cache/redis"
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"github.com/pkg/errors"
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)
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const (
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// _prefixPos is.
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_prefixPos = "p_"
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)
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// keyPos is.
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func keyPos(mid int64) string {
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return _prefixPos + strconv.FormatInt(mid%100000, 10)
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}
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// PositionCache is.
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func (d *Dao) PositionCache(c context.Context, mid int64) (pos int, err error) {
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var (
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key = keyPos(mid)
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conn = d.redis.Get(c)
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)
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defer conn.Close()
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if pos, err = redis.Int(conn.Do("HGET", key, mid)); err != nil {
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if err == redis.ErrNil {
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err = nil
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return
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}
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err = errors.Wrapf(err, "conn.Do(HGET,%s,%d)", key, mid)
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}
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return
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}
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// AddPositionCache is.
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func (d *Dao) AddPositionCache(c context.Context, mid int64, pos int) (err error) {
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var (
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key = keyPos(mid)
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conn = d.redis.Get(c)
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)
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defer conn.Close()
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if _, err = conn.Do("HSET", key, mid, pos); err != nil {
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err = errors.Wrapf(err, "conn.Do(HSET,%s,%d,%d)", key, mid, pos)
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}
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return
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}
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