Recipe: Temporal Queries

Query the graph at a specific point in time.

Snapshot query (AS OF)#

// Query the graph as it was at a specific sequence checkpoint
const result = db.query("MATCH (n:Person) AS OF seq 100 RETURN n.name, n.age")

Apply exponential decay to rank recent data higher:

const decayed = db.query("CALL temporal.decay(7, 0.01)")
// halfLife=7 days, floor=0.01

How fast is the graph changing?

const v = db.query("CALL temporal.velocity(7)")  // last 7 days
console.log(v.rows[0].get('totalNodes'))

Track an entity's changes over time:

const trajectory = db.query("CALL temporal.trajectory()")

const changes = db.query("CALL db.changesSince")