---
phase: 06-email-notifications
plan: 02
subsystem: email
tags: [action-scheduler, async-processing, email, batch-processing]
requires: []
provides: [async-email-infrastructure, batch-scheduling-api]
affects: [06-03]
tech-stack:
  added: [action-scheduler-3.9.3]
  patterns: [async-job-processing, batch-chunking]
key-files:
  created: [vendor/action-scheduler/, includes/class-scheduler.php]
  modified: [ddhh-job-manager.php, includes/class-ddhh-job-manager.php]
key-decisions: []
issues-created: []
duration: 1 min
completed: 2026-01-14
---

# Phase 6 Plan 2: Action Scheduler Integration Summary

**Action Scheduler 3.9.3 integrated with 50-user batch scheduling for async email processing**

## Accomplishments

- Downloaded and integrated Action Scheduler 3.9.3 library from WooCommerce GitHub
- Library loaded early in main plugin file before other code for proper initialization
- Created DDHH_JM_Scheduler helper class for managing async email batch actions
- Implemented schedule_mentor_notification_batch() method that chunks users into batches of 50
- Async actions enqueued with unique flag to prevent duplicates and email-notifications group for organization
- Scheduler class initialized in main plugin lifecycle
- Infrastructure ready for Phase 06-03 to implement actual email sending callbacks

## Files Created/Modified

- `vendor/action-scheduler/` - Action Scheduler 3.9.3 library (102 files, 17,820+ lines)
- `includes/class-scheduler.php` - Scheduler helper class with batch scheduling API
- `ddhh-job-manager.php` - Added Action Scheduler include before other code, added scheduler class include
- `includes/class-ddhh-job-manager.php` - Initialized scheduler hooks in plugin lifecycle

## Decisions Made

None - straightforward implementation following Context7 best practices for Action Scheduler integration.

## Issues Encountered

None - library downloaded successfully, integration completed without errors.

## Performance Data

- Duration: 1 min
- Started: 2026-01-14T12:03:24Z
- Completed: 2026-01-14T12:04:35Z
- Tasks completed: 2/2
- Files modified: 4 files
- Commits: 2 (1 per task)

## Verification Results

All verification criteria met:

- [x] Action Scheduler library exists in vendor/action-scheduler/
- [x] Library loaded in main plugin file before other includes
- [x] Scheduler helper class created in includes/class-scheduler.php
- [x] Batch scheduling method chunks users into batches of 50
- [x] Action Scheduler functions available (as_enqueue_async_action works)
- [x] No PHP errors on plugin activation (library auto-initializes)

## Next Step

Ready for Phase 06-03 (Email batch processing implementation). Phase 06-01 (Mentor opt-in) and 06-02 (Action Scheduler) are both complete and ready for 06-03 to build on.