使用gocql驱动程序在Cassandra中存储字节片

Question

How to store slice of bytes as cassandra blob type using gocql driver?

Answer 1

Your question is very unspecific and you do not show us what you have done so far.

Since I don't know where your actual problem lies I will just post my WriteRecord function I wrote a while back when testing cassandra with the gocql package:

func (cs *cassandra) WriteRecord(table string, fields []string, values ...interface{}) error {
    var placeholder []string

    for range fields {
        placeholder = append(placeholder, "?")
    }
    querystring := fmt.Sprintf(insertstring, table, strings.Join(fields, ", "), strings.Join(placeholder, ", "))
    return cassandraSession.Query(querystring, values...).Exec()
}

As you can see the values are of type interface{}. So they can be anything including of type []byte. Note that the following condition must be met: len(fields) = len(values)

I hope this helps you on your journey of becoming a golang expert :)