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Jason Staack 50211d1853 docs(09-01): complete retention cleanup plan

- Create 09-01-SUMMARY.md with execution results
- Update STATE.md with phase 9 position and decisions
- Update ROADMAP.md with phase 9 progress
- Mark STOR-03 and STOR-04 requirements complete

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-12 23:35:37 -05:00

3.2 KiB

Raw Blame History

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase

plan

subsystem

tags

requires

provides

affects

tech-stack

key-files

key-decisions

patterns-established

requirements-completed

duration

completed

09-retention-cleanup

database

apscheduler

retention

postgresql

prometheus

cascade-delete

phase	provides
01-database-schema	router_config_snapshots table with CASCADE FK constraints

Automatic retention cleanup of expired config snapshots

CONFIG_RETENTION_DAYS env var for configurable retention period

Prometheus metrics for cleanup observability

added

patterns

APScheduler IntervalTrigger for periodic maintenance jobs

created

modified

backend/app/services/retention_service.py

backend/tests/test_retention_service.py

backend/app/config.py

backend/app/main.py

make_interval(days => :days) for parameterized PostgreSQL interval (no string concatenation)

24h IntervalTrigger with 1h jitter to stagger cleanup across instances

AdminAsyncSessionLocal (bypasses RLS) since retention is cross-tenant system operation

IntervalTrigger pattern for periodic maintenance jobs (vs CronTrigger for scheduled backups)

STOR-03

STOR-04

2min

2026-03-13

Phase 9 Plan 1: Retention Cleanup Summary

Daily APScheduler job deletes config snapshots older than CONFIG_RETENTION_DAYS (default 90) with CASCADE FK cleanup of diffs and changes

Performance

Duration: 2 min
Started: 2026-03-13T04:31:48Z
Completed: 2026-03-13T04:34:12Z
Tasks: 2
Files modified: 4

Accomplishments

Retention service with parameterized SQL DELETE using make_interval for safe interval binding
APScheduler IntervalTrigger running every 24h with 1h jitter for stagger
Prometheus counter and histogram for cleanup observability
Wired into main.py lifespan with non-fatal startup pattern

Task Commits

Each task was committed atomically:

Task 1 (RED): Add failing tests - 00bdde9 (test)
Task 1 (GREEN): Implement retention service + config setting - a9f7a45 (feat)
Task 2: Wire retention scheduler into lifespan - 4d62bc9 (feat)

Files Created/Modified

backend/app/services/retention_service.py - Retention cleanup logic, scheduler, Prometheus metrics
backend/tests/test_retention_service.py - 4 unit tests for cleanup function
backend/app/config.py - Added CONFIG_RETENTION_DAYS setting (default 90)
backend/app/main.py - Wired start/stop retention scheduler into lifespan

Decisions Made

Used make_interval(days => :days) for parameterized PostgreSQL interval (avoids string concatenation SQL injection risk)
24h IntervalTrigger with 1h jitter to stagger cleanup across instances
AdminAsyncSessionLocal bypasses RLS since retention is a cross-tenant system operation

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required. CONFIG_RETENTION_DAYS defaults to 90 if not set.

Next Phase Readiness

Retention cleanup is fully operational, ready for phase 10
No blockers

Phase: 09-retention-cleanup Completed: 2026-03-13

3.2 KiB Raw Blame History