63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
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package dao
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import (
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"context"
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"go-common/app/interface/main/shorturl/model"
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"go-common/library/cache/memcache"
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"go-common/library/log"
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)
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func cacheKey(short string) string {
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return _prefix + short
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}
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// Cache get short url cache.
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func (d *Dao) Cache(c context.Context, short string) (su *model.ShortUrl, err error) {
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var (
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key = cacheKey(short)
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conn = d.memchDB.Get(c)
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item *memcache.Item
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)
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defer conn.Close()
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if item, err = conn.Get(key); err != nil {
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if err == memcache.ErrNotFound {
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err = nil
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} else {
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log.Error("conn.Get(%s) error(%v)", key, err)
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}
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return
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}
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if err = conn.Scan(item, &su); err != nil {
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log.Error("conn.Get(%s) error(%v)", key, err)
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}
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return
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}
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// SetEmptyCache set empty cache for a few time
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func (d *Dao) SetEmptyCache(c context.Context, short string) (err error) {
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var (
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key = cacheKey(short)
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conn = d.memchDB.Get(c)
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)
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defer conn.Close()
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if err = conn.Set(&memcache.Item{Key: key, Object: &model.ShortUrl{}, Flags: memcache.FlagJSON, Expiration: 300}); err != nil {
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log.Error("conn.Set error(%v)", err)
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}
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return
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}
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// SetCache save model.ShortUrl to memcache
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func (d *Dao) SetCache(c context.Context, su *model.ShortUrl) (err error) {
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var (
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key = cacheKey(su.Short)
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conn = d.memchDB.Get(c)
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)
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defer conn.Close()
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if err = conn.Set(&memcache.Item{Key: key, Object: su, Flags: memcache.FlagJSON, Expiration: 0}); err != nil {
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log.Error("conn.Set error(%v)", err)
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return
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}
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return
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}
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