InvitationOperation synchronous Cognito calls blocking request thread
Service
cupixworks-api
Occurrences
29
Status
Reported
Confidence
85%
Actionability
28%
Cluster ID
c92fd4b5-9e33-4e14-a6cd-7d75c9a71395
First Seen
2026-05-26 03:26 UTC
Last Seen
2026-07-13 05:15 UTC
Datadog
SlackActions
InvitationOperation synchronous Cognito calls blocking request thread
What Happened#
2026-05-26 03:26~08:27 UTC 사이에 cupixworks-api의 TeamsController#invitation 엔드포인트에서 평균 5172ms, 최대 9275ms의 비정상적 latency가 5개 리전(ca-central-1, ap-southeast-1, ap-northeast-1, ap-southeast-2, us-west-2)에서 8건 발생했다. 원인은 초대 플로우에서 새 사용자 생성 시 AWS Cognito API 호출, Segment Analytics identify, Kinesis event publish가 HTTP 요청 라이프사이클 내에서 동기적으로 순차 실행되기 때문이다.
Quick Facts#
| Field | Value |
|---|---|
| resource_name | Api::V1::TeamsController#invitation |
| top_frame | app/operations/invitation_operation.rb:61-94 |
| runtime | Ruby on Rails (cupixworks-api) |
| env | production (multi-region) |
Timeline#
- 2026-05-26T03:26:44Z — 최초 latency 감지 (ap-southeast-2, 1541ms)
- 2026-05-26T03:30~03:33Z — liam.hong@cupix.com이 5개 리전에 동시 초대 수행 (1282~2740ms)
- 2026-05-26T08:27:57Z — 최대 latency 발생 (us-west-2, 9274ms, 2명 동시 초대)
- 2026-05-27 — RCA 분석 완료
Scoring#
Confidence 85% · Actionability 28%
Confidence#
| Dimension | Score | Detail |
|---|---|---|
| Evidence completeness | 5/5 | 14 code refs, 2 log queries |
| Code path explicitness | 3/3 | 14 file:line refs |
| Log evidence | 3/3 | section, query, pattern |
| RCA structure | 3/3 | 3/3 sections |
| Revision history | 0/3 | 0 revision(s) |
| Agent execution | 3/3 | success |
Actionability#
| Dimension | Score | Detail |
|---|---|---|
| Fix complexity | 1/5 | critical |
| Affected files | 1/5 | 21 file(s) |
| Single repo | 1/3 | 2 service(s) |
| Immediate actions | 0/3 | absent |
| Testability | 0/3 | no test info |
| External dependency | 1/3 | external deps found |
| Data migration | 3/3 | no migration |