Performance

Monitor database bloat, manage the transient cache, run targeted cleanup operations, and install a Redis object cache drop-in — all from one page.

The Performance page gives you visibility into database overhead and object cache status, and lets you remove unwanted data in bulk. It has four tabs: Overview, Transients, DB Cleanup, and Object Cache.

Object cache status banner

At the top of the page, a status banner shows whether WordPress is using an external object cache:

• Green banner — object caching is active. The cache type (Redis, Memcached, or External) is shown.
• Grey banner — no external cache is active. WordPress is using the database as its cache store. A recommendation to install Redis or Memcached is shown.

Overview tab

The Overview tab shows eight stat cards, one per cleanable item type. Cards with a non-zero count are highlighted in amber as a visual prompt to clean them up.

Stat	Source
Post Revisions	post_type = 'revision' in wp_posts. Estimated disk size in KB is shown beneath the count.
Auto-Drafts	post_status = 'auto-draft' in wp_posts
Trashed Content	post_status = 'trash' in wp_posts (all post types)
Spam Comments	comment_approved = 'spam' in wp_comments
Pending Comments	comment_approved = '0' in wp_comments
Orphaned Post Meta	Rows in wp_postmeta whose post_id no longer exists in wp_posts
Orphaned Comment Meta	Rows in wp_commentmeta whose comment_id no longer exists in wp_comments
Expired Transients	_transient_timeout_* options with a value less than the current Unix timestamp. The total transient count is shown as a sub-label.

If any cleanable items exist, a warning card appears below the stat grid with a link to the DB Cleanup tab.

Click Refresh in the page header to re-fetch all counts from the database.

Transients tab

The Transients tab lists all WordPress transients stored in the wp_options table, with search and pagination.

Reading the table

Each row shows:

• Name — the transient key (with the _transient_ prefix stripped). Expired transients are marked with a red expired badge.
• Size — the byte size of the stored value, formatted as B / KB / MB.
• Expires — the human-readable expiry timestamp. Transients with no timeout are shown as Persistent. Expired timestamps are highlighted in red.

The tab shows up to 50 transients per page. Use the previous/next buttons to paginate through large sets.

Searching transients

Type a partial name in the search field and click Search to filter the list. Click Clear to reset the filter. Search is performed server-side against the option_name column.

Deleting a single transient

Click the trash icon on any row to delete that transient immediately. Both the regular transient and its site transient counterpart are removed (delete_transient() and delete_site_transient() are both called).

Purging all expired transients

Click Purge Expired (N) to delete all expired regular and site transients in one operation. The button is disabled when there are no expired transients. After the operation, a toast shows how many were deleted and the counts update automatically.

DB Cleanup tab

The DB Cleanup tab lets you select one or more item types and delete them all at once.

Selecting items to clean

Each item type is shown as a row with its label, description, and current count. Click a row to toggle it selected (highlighted in blue). Use All to select every type or None to deselect all.

The footer of the card shows how many types are selected and the total number of items that will be deleted.

Running the cleanup

Click Run Cleanup to open a confirmation dialog that lists each selected type and its item count. Click Yes, delete all to proceed.

Cleanup operations are permanent and cannot be undone. Take a database backup before running cleanup on a production site if you are unsure.

The cleanup uses WordPress’s own deletion functions:

Type	Method
Post Revisions	wp_delete_post_revision() per revision ID
Auto-Drafts	wp_delete_post() per post ID
Trashed Content	wp_delete_post() per post ID
Spam Comments	wp_delete_comment() per comment ID
Pending Comments	wp_delete_comment() per comment ID
Orphaned Post Meta	Direct DELETE SQL with LEFT JOIN
Orphaned Comment Meta	Direct DELETE SQL with LEFT JOIN
Expired Transients	delete_transient() and delete_site_transient() per key

After a successful cleanup, a toast shows the total number of items removed and the Overview counts refresh automatically.

Object Cache tab

The Object Cache tab manages WP Manager Pro’s bundled Redis object cache drop-in. It has two inner tabs: Overview and Diagnostics.

Status indicators

The top bar shows the current connection status:

Status	Meaning
Connected (green)	The drop-in is installed and Redis is reachable.
Not enabled (grey)	No drop-in is installed, or it is disabled.
Connection error (red)	The drop-in is installed but Redis cannot be reached.
PhpRedis not loaded (amber)	The phpredis PHP extension is missing.

If a connection error occurs, the error message from the Redis client is shown in a red banner beneath the status bar.

Overview inner tab

The Overview inner tab has three sections:

Status rows — four rows showing the current state of each component:

• Object Cache Drop-in (wp-content/object-cache.php): installed or not, and whether it was installed by WP Manager Pro or a third-party plugin.
• Redis Reachable: whether the server could connect to Redis using the configured constants.
• wp-content Writable: whether the directory is writable by the web server user.
• Cache Status: Active, Inactive, Error, or PhpRedis missing.

Connection details — shown when a Redis connection has been configured. Fields include Scheme, Host, Port, Database, Timeout, Read Timeout, PhpRedis version, and Key Prefix (read from WP_REDIS_PREFIX or WP_CACHE_KEY_SALT).

Redis live stats — shown only when the cache is connected. Eight metric tiles:

Metric	Description
Hit Ratio	keyspace_hits / (keyspace_hits + keyspace_misses) as a percentage
Cached Keys	Number of keys in the configured Redis database
Memory Used	used_memory_human from Redis INFO
Uptime	uptime_in_seconds formatted as minutes, hours, or days
Cache Hits	Raw keyspace_hits value
Cache Misses	Raw keyspace_misses value
Clients	connected_clients from Redis INFO
Ops/sec	instantaneous_ops_per_sec from Redis INFO

This Request — when the WP Manager Pro drop-in is active, additional stats from the current HTTP request are shown: WP Cache Hits, WP Cache Misses, Global Groups count, and Ignored Groups count.

Diagnostics inner tab

The Diagnostics inner tab shows a plain-text dump of all relevant configuration values and connection results. This is useful for sharing with hosting support or when debugging a connection issue.

The dump includes: status, drop-in state, Redis reachability, filesystem write access, PhpRedis version, PHP version, Redis version, host, port, database, timeouts, scheme, key prefix, Multisite status, any connection error, max memory policy, global groups, and ignored groups.

Drop-in actions

Action	When available	Effect
Enable Object Cache	Status is not_enabled and the bundled drop-in exists	Copies includes/object-cache.php from the plugin to wp-content/object-cache.php
Re-enable	A disabled drop-in (object-cache.php.disabled) exists	Renames object-cache.php.disabled back to object-cache.php
Flush Cache	Status is connected	Calls wp_cache_flush() to clear all keys
Disable	Status is connected and the drop-in is ours	Renames object-cache.php to object-cache.php.disabled
Reinstall Drop-in	Status is error	Re-copies the bundled drop-in, replacing the existing file
Refresh	Always	Re-fetches all status data from the server

The drop-in will not overwrite a third-party object-cache.php from another plugin without confirmation. If a conflict is detected, an error is shown and you must remove the other plugin’s drop-in manually before installing.

Configuring Redis connection constants

Add the following constants to wp-config.php before the /* That's all, stop editing! */ line:

// Required
define( 'WP_REDIS_HOST', '127.0.0.1' );
define( 'WP_REDIS_PORT', 6379 );

// Optional
define( 'WP_REDIS_DATABASE', 0 );         // Redis database index
define( 'WP_REDIS_PASSWORD', 'secret' );  // Redis AUTH password
define( 'WP_REDIS_TIMEOUT', 1.0 );        // Connection timeout in seconds
define( 'WP_REDIS_READ_TIMEOUT', 1.0 );   // Read timeout in seconds
define( 'WP_REDIS_PREFIX', 'mysite:' );   // Key prefix (isolates this site's keys)

For a Unix socket connection, use:

define( 'WP_REDIS_SCHEME', 'unix' );
define( 'WP_REDIS_HOST', '/var/run/redis/redis.sock' );

Installing the Redis drop-in

1. Install Redis on your server

   Make sure Redis is running and the PhpRedis PHP extension is loaded. You can verify this in Performance → Object Cache — the status bar will show “PhpRedis not loaded” if the extension is missing.

2. Add connection constants to wp-config.php

   Add at minimum WP_REDIS_HOST and WP_REDIS_PORT to wp-config.php. See the configuration reference above.

3. Install the drop-in

   Go to Performance → Object Cache. If Redis is reachable, the status shows “Not enabled” and an Enable Object Cache button is visible. Click it to copy the bundled object-cache.php drop-in into wp-content/.

4. Verify the connection

   The status changes to Connected and the live stats tiles populate with data from your Redis server. The Hit Ratio starts at 0% and climbs as WordPress pages are served through the cache.

Set WP_REDIS_PREFIX to a unique string (for example, the site domain) when running multiple WordPress sites on the same Redis instance. This prevents cache key collisions between sites.