Description
ObjectNest Cache makes persistent object caching understandable and manageable inside WordPress. It connects WordPress to a Memcached server through the standard wp-content/object-cache.php drop-in and explains whether the PHP extension, server, and drop-in are working.
The plugin stays local-first. It does not create an account, send site data to a remote service, add frontend assets, or track visitors.
Features
- Automatic discovery of common local Memcached endpoints.
- Custom Memcached host and port configuration.
- Connection test with actionable diagnostics.
- Safe connect and disconnect controls.
- Refuses to overwrite a foreign object-cache.php drop-in.
- Live Memcached version, uptime, hit ratio, items, memory, connections, traffic, and evictions.
- Optional disk object-cache fallback when Memcached is unavailable.
- Explicit administrator-only cache flush action protected by a nonce.
- Responsive, keyboard-friendly WordPress admin dashboard.
- A compact WordPress Dashboard widget showing live hit ratio, memory, items, evictions, and uptime.
Requirements
- WordPress 5.8 or newer.
- PHP 7.4 or newer.
- For Memcached: the PECL
memcachedextension and a reachable Memcached server. - The legacy PECL
memcacheextension is not the extension used by the Memcached backend.
Safety
ObjectNest never overwrites an object-cache.php file it does not own. Memcached should listen on a private interface or protected network; do not expose it to the public internet. Cache keys are salted per WordPress installation when the generated drop-in is created.
The Flush action affects the connected cache backend’s pool. Use it only when you understand whether that server is shared with other applications.
Screenshots
Installation
- Install and activate ObjectNest Cache.
- Open ObjectNest Cache in the WordPress admin menu.
- Confirm the PHP extension and server readiness checks.
- Choose automatic discovery or save a custom host and port.
- Select Connect. ObjectNest will create its own
object-cache.phponly when no foreign drop-in is present.
If Memcached is unavailable, choose the optional disk fallback. Disk fallback is intended as a compatibility option, not a replacement for a properly configured memory cache.
FAQ
-
Why does the dashboard say the PHP extension is missing?
-
The Memcached daemon and PHP extension are separate. Ask your host to enable the PECL
memcachedextension for the PHP version serving WordPress. -
Why will ObjectNest not connect?
-
Check the PHP extension, host and port, server firewall, and whether another persistent object-cache plugin already owns
wp-content/object-cache.php. -
Can ObjectNest run with Redis Object Cache or another object-cache plugin?
-
Only one persistent object-cache drop-in should be active at a time. ObjectNest reports a conflict and does not overwrite another plugin’s file.
-
Does ObjectNest cache frontend pages?
-
No. It provides persistent WordPress object caching. Page caching, browser caching, CDN caching, and PHP OPcache are separate layers.
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Contributors & Developers
“ObjectNest Cache” is open source software. The following people have contributed to this plugin.
Contributors
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