Neo4j标签，关系类型和密码匹配性能

Question

Say I have a massive graph of users and other types of nodes. Each type has a label, some may have multiple labels. Since I am defining users and their access to nodes, there is one relationship type between users and nodes: CAN_ACCESS . Between other objects, there are different relationship types, but for the purpose of access control, everything involves a CAN_ACCESS relationship when we start from a user.

I never perform a match without using labels, so my intention and hope is that any performance downsides to having one heavily-used relationship type from my User nodes should be negated by matching a label. Obviously, this match could get messy:

MATCH (n:`User`)-[r1:`CAN_ACCESS`]->(n2)

But I'd never do that. I'd do this:

MATCH (n:`User`)-[r1:`CAN_ACCESS`]->(n2:`LabelX`)

My question, then is whether the use of labels on the destination side of the match is effectively equivalent to having a dedicated relationship type between a User and any given label. In other words, does this:

MATCH (n:`User`)-[r1:`CAN_ACCESS`]->(n2:`LabelX`)

Give me the same performance as this:

MATCH (n:`User`)-[r1:`CAN_ACCESS_LABEL_X`]->(n2)

If CAN_ACCESS_LABEL_X ALWAYS goes (n:`User`)-->(n:`LabelX`)?

Answer 1

正如迈克尔饥饿的评论中指出，马克李约瑟的博客文章在这里表明，性能最好的，当你使用一个专用的关系类型，而不是依赖于标签。