Tutorial

5.6 Read the decisions

docker exec shopfront-postgres psql -U postgres -d shopfront -c "
  select metadata_id as run, question_key, answer->>'probability' as yes,
         routes->0->>'track' as track,
         shadows->0->'answer'->>'probability' as shadow_yes,
         shadows->0->>'agrees' as agrees
  from trax.decision order by id"

 run |  question_key   | yes | track | shadow_yes | agrees
-----+-----------------+-----+-------+------------+--------
   1 | LooksFraudulent | 0   | No    | 1          | false
   2 | LooksFraudulent | 1   | Yes   | 1          | true
(2 rows)

Your run ids are higher, after the runs of the earlier chapters. Each row is one question one run asked. answer is what the live rule said and routes the track the gate took on it. shadows holds what the stricter rule said and whether it agreed: on grace's order it would have held 74.00, and the live rule took it. That disagreement is the evidence for or against the stricter rule, gathered without stopping a single customer. When the candidate has agreed often enough on the orders that matter, it becomes the live IDecider and the Shadow line comes off the gate.

SDK Reference

Gate | Decide | AddDecisionRecording | Write a decider | Try a decider in shadow | Test a train's decisions

Next: 5.7 Test it