9. 查询 => Key
• select id from blogs where author_id = x
and is_deleted = 0 order by id desc
• blog:author_id=1:is_deleted=0
• select count(*) from blogs where author_id
= x and is_deleted = 0
• blog:author_id=1:is_deleted=0/c
11. 实际上...
• 插入新blog:
• Get: blog:author_id=1:is_deleted=0
• Deserialized to Array
• Append to new ID
• Serialized to bytes
• Set: blog:author_id=1:is_deleted=0