WP Crontrol Hours

설명

Take control of your CRON jobs by restricting them to your website’s low traffic hours. From the admin screen, you can:

  • Specify a daily window of when recurring CRON events should be triggered.
  • Optionally limit events that run multiple times a day to only once a day.
  • Optionally restrict events that run multiple times a day to only during your off-hours.
  • Target specific schedules, including custom ones created by other plugins.
  • Exclude specific CRON hooks from being affected

Benefits

Restricting your recurring CRON events to only run after hours helps with two (2) things:

  1. Automatic updates for WordPress core, plugins, and themes are prevented from running during your highest-traffic times so users aren’t shown a maintenance page when it’s the most visible.
  2. Less stress is placed on your server when automatic maintenance occurs during low traffic times.

Ensuring CRON Events Always Run

WordPress CRON is based on traffic, which means if your site does not see a lot of traffic, CRON events may not be triggered at the time that they are scheduled. Limiting your website’s CRON events to off-hours while also depending on site traffic to trigger them may not produce the intended results. There are two (2) solutions I recommend:

  1. Use Server CRON. It is recommended in the WordPress developer resources to set up your system’s task scheduler to run on the desired intervals and to use that to make a web request to wp-cron.php. View WordPress Documentation.
  2. Use Cron-Job.org. If you can’t set up your system’s task scheduler, I recommend outsourcing that job to cron-job.org to automatically ping your website’s wp-cron.php file. It is a free service from the German-based developers. Go to Cron-Job.org.

스크린샷

  • Plugin settings screen
  • Plugin status screen where you can see the calculated duration of the window you set, the CRON schedules and hooks registered on your website
  • Update Hours screen where you can perform a dry run of what events would be modified or manually run the event now
  • An example of a dry run and what the output looks like
  • An example of a real run and what the output looks like

설치

There are three (3) ways to install my plugin: automatically, upload, or manually.

Install Method 1: Automatic Installation

Automatic installation is the easiest option as WordPress handles the file transfers itself and you don’t need to leave your web browser.

  1. Log in to your WordPress dashboard.
  2. Navigate to Plugins > Add New.
  3. Where it says “Keyword” in a dropdown, change it to “Author”
  4. In the search form, type “TessaWatkinsLLC” (results may begin populating as you type but my plugins will only show when the full name is there)
  5. Once you’ve found my plugin in the search results that appear, click the Install Now button and wait for the installation process to complete.
  6. Once the installation process is completed, click the Activate button to activate my plugin.

Install Method 2: Upload via WordPress Admin

This method involves is a little more involved. You don’t need to leave your web browser, but you’ll need to download and then upload the files yourself.

  1. Download my plugin from WordPress.org; it will be in the form of a zip file.
  2. Log in to your WordPress dashboard.
  3. Navigate to Plugins > Add New.
  4. Click the Upload Plugin button at the top of the screen.
  5. Select the zip file from your local file system that was downloaded in step 1.
  6. Click the Install Now button and wait for the installation process to complete.
  7. Once the installation process is completed, click the Activate button to activate my plugin.

Install Method 3: Manual Installation

This method is the most involved as it requires you to be familiar with the process of transferring files using an SFTP client.

  1. Download my plugin from WordPress.org; it will be in the form of a zip file.
  2. Unzip the contents; you should have a single folder named crontrol-hours.
  3. Connect to your WordPress server with your favorite SFTP client.
  4. Copy the folder from step 2 to the /wp-content/plugins/ folder in your WordPress directory. Once the folder and all of its files are there, installation is complete.
  5. Now log in to your WordPress dashboard.
  6. Navigate to Plugins > Installed Plugins. You should now see my plugin in your list.
  7. Click the Activate button under my plugin to activate it.

FAQ

What if my end time is earlier than my start time?

That’s okay! My plugin is smart enough to know that your window is running overnight into the next day.

How does it choose when to reschedule a CRON event?

It picks a random time within your chosen start and end times and pushes it back.

What timezone is used for setting start and end times?

It uses the website’s timezone set in Settings > General

Do I have to configure anything after installing and activating this plugin?

Nope! The default window is set from 20:00 to 04:00 (or 8pm to 4am). Upon activation, the plugin creates its own daily CRON event scheduled for midnight in your website’s timezone (defined in Settings > General) to check and fix all of the others to run within that window. So you can safely set it and forget it!

Does this work on multisites installations?

Yes! Each site in the multisite’s network will get their own configuration settings page so they can be customized. However, if you want to ensure all sites use the same settings, you can override them with constant variables set in the wp-config.php file like this:

/** Crontrol Hours */
define('CRONTROL_HOURS_INTERVALS', 'twicedaily,daily,weekly,monthly'); // Comma separated list of recurring intervals to check for
define('CRONTROL_HOURS_FORCE_DAILY', '1'); // Sets "Force Daily" to true
define('CRONTROL_HOURS_RESTRICT_FREQUENT', '1'); // Sets "Restrict Frequent" to true
define('CRONTROL_HOURS_START_TIME', '23:00'); // Sets the start time
define('CRONTROL_HOURS_END_TIME', '05:00'); // Sets the end time
define('CRONTROL_HOURS_EXCLUDE', 'wordfence_daily_cron,otter_montly_scheduled_events'); // Comma separated list of hooks to exclude from being changed

It’s also important to point out that each site in the network will need it’s own wp-cron.php pinged whether you set it up via server tasks or with Cron-Job.org.

I manage a lot of websites with custom configurations, is there an easy way to edit these settings without logging in?

Yes! I feel you there. You can set the following constant variables in your WordPress installation’s wp-config.php file.

/** Crontrol Hours */
define('CRONTROL_HOURS_INTERVALS', 'twicedaily,daily,weekly,monthly'); // Comma separated list of recurring intervals to check for
define('CRONTROL_HOURS_FORCE_DAILY', '1'); // Sets "Force Daily" to true
define('CRONTROL_HOURS_RESTRICT_FREQUENT', '1'); // Sets "Restrict Frequent" to true
define('CRONTROL_HOURS_START_TIME', '23:00'); // Sets the start time
define('CRONTROL_HOURS_END_TIME', '05:00'); // Sets the end time
define('CRONTROL_HOURS_EXCLUDE', 'wordfence_daily_cron,otter_montly_scheduled_events'); // Comma separated list of hooks to exclude from being changed

Keep in mind that if you’re using this on a multisite installation, these settings will override all sites on the network.

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변경이력

2.0.0 – March 30, 2023

  • Feature: Added a “Restrict Frequent” setting that, when enabled, will restrict events that run multiple times a day to only run between the daily start and end times while maintaining their specified intervals.
  • UI: Updated the appearance of the settings page
  • UI: Added more information to the “Update Hours” tab and outputted information
  • Assets: Compressed the PNG images loaded on the backend

1.1.0 – November 9, 2022

  • Feature: Added a plugin setting to explicitly exclude hooks from being automatically updated
  • Feature: Added a status and fix link to the list of links on the plugin page between “Settings” and “Deactivate” to quickly navigate to those tabs from the plugins page
  • Fix: Updated the CRON event that is added when the plugin is activated to take place around midnight respective to the WordPress site’s timezone
  • Language: Added the /languages/ directory with the POT file to allow translations.

1.0.0 – November 3, 2022

  • Major: Submitted to WordPress.org repository!