func (s *Store) TodayUniqueCount(siteId int64) (cnt int64, e error) {
var (
hl *hyperloglog.HyperLogLogPlus
)
hl, e = s.getHyperLoglog(siteId)
if e != nil {
return
}
cnt = int64(hl.Count())
return
}
func (s *Store) TodayUnique(siteId int64, uid int64) (cnt int64, e error) {
var (
hl *hyperloglog.HyperLogLogPlus
)
hl, e = s.getHyperLoglog(siteId)
if e != nil {
return
}
h := fnv.New64a()
b := make([]byte, 4)
binary.BigEndian.PutUint32(b, uint32(uid))
io.WriteString(h, hex.EncodeToString(b))
hl.Add(h)
// encode and store hyperloglog
var bts []byte
bts, e = hl.GobEncode()
if e != nil {
return
}
e = s.ldb.Put(itob32(siteId), bts, nil)
if e != nil {
return
}
cnt = int64(hl.Count())
return
}