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Action Scheduler

By Automattic

Site Administration & Utilities / Site Migration & Cloning

Action Scheduler Review - In-Depth Analysis

Action Scheduler is a scalable job queue for background processing in WordPress. It allows scheduling actions with unique data for future execution.

Performance Overview

WPS Score

6.7/10

User Rating

3.5/5 (based on 13+ reviews)

Active Installations

20,000+

Update Frequency

Average It is calculated using the weighted average of same category plugins.

Security Score

1 / 10 (Very Low Risk) It is calculated using the weighted average of all versions.

What It Does

Action Scheduler is a scalable, traceable job queue for background processing large sets of actions in WordPress. It is specially designed to be distributed in WordPress plugins.

Action Scheduler works by triggering an action hook to run at some time in the future. Each hook can be scheduled with unique data, allowing callbacks to perform operations on that data. The hook can also be scheduled to run on one or more occasions.

Think of it like an extension to do_action() which adds the ability to delay and repeat a hook.

Every month, Action Scheduler processes millions of payments for Subscriptions, webhooks for WooCommerce, as well as emails and other events for a range of other plugins.

It has been seen on live sites processing queues in excess of 50,000 jobs and doing resource-intensive operations, like processing payments and creating orders, at a sustained rate of over 10,000 per hour without negatively impacting normal site operations.

If your plugin needs background processing, especially of large sets of tasks, Action Scheduler can help.

To learn more about how Action Scheduler works, and how to use it in your plugin, check out the docs on ActionScheduler.org.

There you will find guides and references for using Action Scheduler effectively.

Comparing to Alternatives

Action Scheduler is a background job runner for WordPress, primarily used by WooCommerce and other plugins to handle scheduled tasks asynchronously. It stands out by integrating deeply with WordPress core processes.

Top alternatives

Action Scheduler

Strengths

Enables asynchronous execution of scheduled actions, improving task handling.
Widely adopted by major plugins like WooCommerce, ensuring reliability.
Automatically manages and retries failed tasks.
Restores missing database tables related to scheduled actions.

Weaknesses

Lacks a user-friendly interface for managing scheduled tasks.
Can consume significant server resources if not properly managed.
No clear way to completely disable or uninstall without potential site issues.
Limited transparency about its background operations to site owners.

User Sentiment Analysis

User feedback on Action Scheduler reveals a mix of appreciation for its functionality and frustration over its resource usage and management limitations.

Positive highlights

"Incredibly powerful asynchronous execution of actions" - Auke Piersma
"Everything works as stated; cron and WP CLI handle tasks well" - mfwriter
"Detected and restored missing database tables" - pol

Common complaints

Consumes excessive server resources, slowing down sites.
Difficult or impossible to fully remove or disable.
Generates large amounts of database logs and claims, causing bloat.
Lacks direct management options within WordPress admin.

Weaknesses

Hidden operation without clear identification to site owners.
Attempts to stop or remove it can cause site crashes.
Developer support perceived as unhelpful regarding performance concerns.

Who Should Use This?

Best for

Developers and site owners who need reliable asynchronous task scheduling integrated with WooCommerce or similar plugins and are comfortable managing background processes without direct UI controls.

Not ideal for

Users seeking full control over scheduled tasks via a graphical interface or those with limited server resources who cannot afford potential performance impacts.

Pricing & Value

Free version includes

The free version offers full functionality for scheduling and managing asynchronous actions, including automatic retries and database table management.

Final Verdict

Action Scheduler is a powerful and essential tool for asynchronous task management in WordPress, especially for WooCommerce users. However, its hidden operations and resource consumption can pose challenges for site owners who lack technical expertise or have limited server capacity.

While it excels in functionality and reliability, the plugin's lack of transparency and management options may frustrate users wanting more control. It is best suited for developers and advanced users who understand its workings and can mitigate potential performance issues.