A deployment can update WooCommerce code while an older PHP worker still owns an Action Scheduler claim. Stopping too quickly can abandon long imports, email jobs, subscription renewals, webhooks, or cleanup tasks. Letting old workers run indefinitely can execute new database state with old code. A claim-drain test defines when to stop intake, how to observe active claims, and what counts as a safe retry.
Use this for WooCommerce stores with Action Scheduler, WP-CLI runners, cron workers, containers, autoscaling, subscriptions, imports, webhooks, or high order volume.
Quick answer
Pause or gate new worker intake, record active claims and action IDs, allow approved long actions to finish inside a bounded drain window, then replace workers and release claims according to documented behavior. Use idempotent fixtures for email, webhook, inventory, and order transitions. Promote only when no old package holds a claim, pending work resumes on the approved version, and each business outcome occurs once.
What to check first
- Record deploy ID, package version, worker ID, process start, queue runner, claim ID, action ID, hook, group, and business object.
- Create short, long, retryable, nonretryable, duplicate, and dependency-order fixtures.
- Gate new claims, observe active work, define the drain deadline, and capture completion or release behavior.
- Replace web, cron, CLI, container, and background workers together with explicit package evidence.
- Reconcile action state to orders, emails, webhooks, stock, subscriptions, and external provider outcomes.
Diagnostic table
Use this table to connect the observed behavior to evidence and a verification step.
| Action | Evidence to collect | How to verify |
|---|
| Inventory every queue runner and loaded package version. | Record deploy ID, package version, worker ID, process start, queue runner, claim ID, action ID, hook, group, and business object. | No worker on the prior package holds an active claim. |
| Gate new claims and start a bounded drain window. | Create short, long, retryable, nonretryable, duplicate, and dependency-order fixtures. | Pending and retry actions resume on the approved version. |
| Let safe work finish or release it through a documented recovery path. | Gate new claims, observe active work, define the drain deadline, and capture completion or release behavior. | Email, webhook, stock, and order fixtures each produce one outcome. |
| Replace all worker cohorts and confirm the approved package before resuming intake. | Replace web, cron, CLI, container, and background workers together with explicit package evidence. | Queue depth, oldest age, failure rate, and customer latency return to baseline. |
Why this usually happens
- Long-lived workers keep loaded PHP code after files change.
- A claim marks a batch as owned but does not prove its business side effect completed.
- Retries can duplicate external calls when the provider accepted a request before the worker failed.
Useful command or data shape
Adapt paths, IDs, and privacy handling to the site before running commands or storing data on production.
deploy,worker,package,claim,action,hook,start,drain_state,retry,business_result
D-811,w-old,11.0.0,c-91,a-501,send_email,13:58,running,0,none
D-811,w-new,11.0.1,c-92,a-502,webhook,14:04,complete,0,once
D-811,w-new,11.0.1,c-93,a-503,stock_sync,14:05,retry,1,once
Test scenarios to run
Run the same controlled fixture across these branches. Write down the expected result before testing so a surprising response is easy to identify.
| Scenario | Fixture | Expected result |
|---|
| Short action | Finishes before drain deadline | Completed once |
| Long action | Runs across deployment | Bounded finish or safe retry |
| Failed action | Temporary provider error | Retry retains idempotency |
| Old worker | Claim held after replacement | Blocked from new package state |
Safe fix order
Use a sequence that makes each result easy to prove. Stop when new evidence changes the scope or owner of the problem.
- Inventory every queue runner and loaded package version.
- Gate new claims and start a bounded drain window.
- Let safe work finish or release it through a documented recovery path.
- Replace all worker cohorts and confirm the approved package before resuming intake.
- Reconcile each fixture to one business outcome and monitor queue recovery.
Decision rule
Resume normal intake only when old workers hold no claims, approved workers can claim and complete pending actions, retry fixtures remain idempotent, and business outcomes reconcile exactly once.
Production verification checklist
- No worker on the prior package holds an active claim.
- Pending and retry actions resume on the approved version.
- Email, webhook, stock, and order fixtures each produce one outcome.
- Queue depth, oldest age, failure rate, and customer latency return to baseline.
Field notes
- Use synthetic business objects before live renewals or purchases.
- Do not delete failed actions to make the queue look healthy.
- Keep deployment, claim, action, and business timestamps in UTC.
Questions teams ask during testing
Can this be tested on staging?
Start on staging with production-like versions, roles, data volume, cache, browser behavior, and integrations. Finish with one controlled production fixture when the result depends on the real CDN, email provider, worker clock, crawler response, or browser storage.
What evidence should be retained?
Keep exact versions, stable IDs, UTC timestamps, sanitized requests or logs, expected result, actual result, decision, and final verification. Redact customer data, cookies, secrets, order keys, and full advertising identifiers.
When should the change be rolled back?
Roll back when a revenue, privacy, accessibility, security, publishing, or lead path fails and the cause cannot be isolated inside the approved maintenance window. Preserve the failed fixture before rollback.
Mistakes to avoid
- Do not change several production layers at once. Preserve the failing evidence and isolate one variable per test.
- Do not treat a successful request, quiet log, or correct screenshot as proof that the complete user outcome is correct.
- Do not leave debug logs, test records, broad credentials, temporary roles, or browser overrides active after verification.
- Do not close the work without recording versions, fixture IDs, UTC timestamps, owner, result, and rollback point.
What to tell the client or owner
Give the owner the affected versions, exact fixture, stable IDs, UTC timeline, before and after evidence, decision, rollback point, unresolved risks, and next review date.
When HandL WP should help
Bring in help when this affects leads, checkout, search visibility, security, paid media reporting, or a client production site. HandL WP can trace the issue through WordPress, hosting, cache, tracking, and Search Console, then verify the workflow after the technical fix.
If this is active on a production site, stabilize a WooCommerce deployment.
Related HandL WP guides
Use these related guides when the same issue touches tracking, security, checkout, or crawler visibility.
Helpful references