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atec Cache APCu

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atec Cache APCu

by docjojo

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Description

atec Cache APCu provides a drop-in object-cache and optional page cache, built entirely on APCu.

It replaces WordPress’s core cache with a fast, persistent alternative — offering major performance gains, especially on single-server setups.

APCu is faster than Redis and Memcached in low-latency scenarios. This plugin uses advanced logic that improves object cache efficiency by up to 16.67%.

The optional page cache is the only APCu-powered full-page cache for WordPress, and includes cache exclusion rules, cache flushing and profiler/debugging options.

Specifications

  • Includes object cache drop-in and optional full page cache
  • Profiler and debug options for diagnostics

Requirements

  • APCu extension enabled

Third-Party Services

Integrity check

Once, when activating the plugin, an integrity check is requested from our server – if you give your permission.
Source: https://atecplugins.com/
Privacy policy: https://atecplugins.com/privacy-policy/

‘PRO’ Features

  • AOC Mode (Advanced Object Cache)
    Advanced Object Cache Mode – takes full advantage of APCu’s in-memory array support, eliminating unnecessary serialize()/unserialize() cycles and boosting PHP performance on every request.

  • APC Mode (Advanced Page Cache)
    Advanced Page Cache is a ‘PRO’-level optimization that activates earlier than regular page cache — before most WordPress logic even runs.

  1. Upload the plugin to /wp-content/plugins/ or install via the WP admin panel.
  2. Activate the plugin from the Plugins menu.
  3. Select “atec Cache APCu” link in admin menu bar.
  4. Enable Object-Cache and Page-Cache in the settings panel.
  1. Settings

    Settings

  2. Cache Info

    Cache Info

  3. Server Info

    Server Info

  4. Persistent Object Cache Groups

    Persistent Object Cache Groups

  5. Page Cache Overview

    Page Cache Overview

  6. Cache comparison (APCu, Redis, Memcached)

    Cache comparison (APCu, Redis, Memcached)

– What is Object caching?
Object caching involves storing variables and database queries thereby speeding up PHP execution times. This reduces the load on your server, and delivers content to your visitors faster.

– What is Page caching?
Page caching refers to caching the content of a whole page on the server-side. Later when the same page is requested again, its content will be served from the cache instead of regenerating it from scratch.

  • Does the object-cache also work in WP-CLI?
    If you use WP-CLI to run .php scripts, please set “apc.enable_cli=1” in your php.ini – otherwise object-cache will not work.

  • Is the page cache multisite compatibel?
    This plugin isn’t optimized for multisite environments. Since multisite setups require incorporating a blog ID — a feature not supported by this plugin — we recommend using our “mega-cache” plugin instead.

  • Is the page cache multi-language compatibel?
    This depends on the translation plugin being used. When translations are performed on the fly, the page or post ID remains unchanged, preventing “atec-cache-apcu” from detecting any differences. Please use our “mega-cache” plugin instead.

Does this work with WooCommerce?

Partly. Cart, checkout, and account pages are automatically excluded from the page cache.

Will this work on shared hosting?

Ye – if APCu is available. It is ideal for VPS or dedicated servers.

Can I use Redis or Memcached with this?

No. This plugin is APCu-only and does not require other memory caches.

What makes this faster than other solutions?

It uses pure APCu without network latency, with optimized logic for set/get/flush and auto-purging support.

How do I use DONOTCACHEPAGE to skip page caching for specific requests?

You can define the constant DONOTCACHEPAGE to prevent a page from being stored in the cache. To use it correctly, make sure it is defined early during WordPress execution — before output begins.

For example, in a plugin or theme:

add_action('template_redirect', function() {
    if ( is_page('thank-you') || is_user_logged_in() ) {
        define('DONOTCACHEPAGE', true);
    }
});

This ensures the current request is processed normally but not stored in the page cache.

Important:
If a page has already been cached, this logic will not run — because the cached version is served before WordPress reaches your code. To apply new exclusions like this, make sure to purge the page cache after defining the logic.

No difference to opcache

By cwrksr on July 3, 2025

But since it seems to be more active ive switched.

i couldnt really find any benefit, maybe a little bit slower 0,2s...?

Nice UI. But please, make that "auto deactivate page cache" more obvios i atleast tried to activate it 30 times and was maximal confused. Then i saw "dont use multiple caches blabla".

I dont know if its usefull or not, but couldnt we apc cache the [insert caching solution] in my case wp rocket result? Would that be faster?

Great

By fesarlis on February 26, 2025

Great plugin and the only one around.

Doesn't work for me

By v1eren on January 21, 2025

Started to use this plugin to get my Objekt-Cache to a better use and a bit more site speed.

I noticed some options that hadn't changed like getting my WooCommerce live and after a bit of digging I noticed that this plugin was preventing the changes form being saved.

Today I woke up to a blank Frontsite and a blank admin dashboard and I panicked a bit. After deactivation this plugin everything worked fine again.

Can't activate the options of this plugin when its installed anymore so I wasn't able to recreate the problem and check the debug log.

But at least my whole site didn't get blank anymore.

Amazing Plugins

By gfus (jaysonbrollini) on January 11, 2025

I spent all day trying to find the source of my website issues, downloaded several other plugins with very little results without a paywall. I narrowed my search and ended up finding Atec page with several very useful plugins. I ended up purchasing the PRO one time fee for the license which unlocked the Atec Deploy plugin. Extremely impressed with the (light weight) resources the plugins offer. I think all the features are very simple for any user to understand, with and impressive amount of detail and configurations that are all compressive. Their tech support is really responsive and answered all my questions. I would highly recommend this to any professional or beginner web developer. Thanks for creating these plugins!

Amazing plugin and very good support

By CyberOtter (cyberotter) on January 9, 2025

Had a small issue, was fixed immediately

Great plugin and support

By pagrob on January 3, 2025

Thanks to this plugin I solved several problems on the site, from fast loading to space used by the cache and when I needed clarifications the support was fast and effective 💯

Super-schnell, kein Vergleich zu anderen APCu Plugins!

By Sandra (spoodes) on November 28, 2024

Dies ist nicht das erste APCu Plugin, das ich installiert habe. Zuvor hatte ich den "APCu Manager" von PerfOps ausprobiert/deaktiviert/ausprobiert.... irgendwie habe ich keinen Unterschied bemerkt, nur die Fehlermeldung im WordPress "Website-Zustand" änderte sich von "Du solltst einen Object-Cache verwenden" zu irgend etwas anderem.

Eigentlich war das Thema für mich erledigt, dann stolpere ich mehr zufällig über dieses kleine Plugin. Ja, es ist wunderbar klein! Und schnell! Ich habe nie etwas gemessen, doch mit dem "atec Cache APCu" bemerkt man einen deutlichen Unterschied zu vorher. Ich behalte es!

Kompatibel mit WooCommerce (der Objekt Cache stört beispielsweise auch keinen Currency-Switcher, wie ein Page-Cache es regelmäßig tut).

Auch keine Fehlermeldung mehr im Website-Zustand!

Dieses gratis Programm kommt zusätzlich mit einem kleinen Page/Seiten-Cache onboard, der automatisch alle Nicht-Woocoomerce-Seiten cached. Kann man aktivieren oder deaktivieren, mehr nicht.

Wenn man mag, bekommt man für 39 Euro auch eine "Pro" Version und damit zugleich ein ganzes Bundle an nützlichen Plugins von Atec. Bei der Pro-Version soll der Page-Cache besser sein. Das weiß ich nicht, eigentlich ist dieses kostenlose Plugin den Preis aber schon wert! 😉

Support vom Autor ist notfalls auch möglich.

Die Kurzversion: Unbedingt testen! 10 Sterne!

Fixed my memory settings

By barbaroshh on November 24, 2024

Hello
Even though I changed the memory consumption settings via PHP, there is no change on the plugin in the Admin panel. Is there a reason for this or am I doing it wrong? Thanks

Great product for astounding performance

By lucas6888 on November 11, 2024

The developer offered fast support for a setup issue I was having. After trying multiple object cache services for more than a website, I can say the improvement this one brings in page speed is far greater than everything else. I recommend also checking his other plugins, I will consider using some of them too in the future.

A Game-Changer for WordPress Performance

By Cryovex.com (guaym2) on June 19, 2025

I’ve always been a bit obsessed with squeezing every ounce of performance out of my WordPress setup. I’d already tinkered with server-side tweaks, but my business hosting setup left me with limited wiggle room. Then I found atec Cache APCu, and things started to move—literally.

No flashy marketing. No bloat. Just fast, efficient object caching that noticeably sped things up. I’m running a gadget review site, and I could feel the difference in responsiveness within a day. Pages loaded quicker, backend felt snappier, and I wasn’t burning CPU cycles for no reason.

What sealed the deal for me, though, was the support. I ran into a small hiccup after an update. I figured I’d wait days—maybe a week—for help. Instead, Chris (the developer) responded the same day and sorted it out without a fuss. That kind of hands-on support isn’t just helpful—it makes you trust the tool more.

I started using atec back in the early 1.x days, and it’s come a long way since then. With the current release, my object cache hit rate is over 98%, and APCu’s clocking in around 85%. That’s not marketing fluff—I see it in the metrics. And yes, traffic’s gone up too. Coincidence? Maybe. But the speed boost certainly didn’t hurt.

At this point, I’m eyeing the PRO version. I don’t usually throw money at plugins, but the performance boost from optimizing autoloaded options and internal caching? That’s tempting. Especially when you already know the developer’s solid.

Bottom line: if your WordPress site feels sluggish and you’re not ready to jump into server-side magic, try this plugin. It’s the kind of upgrade you notice—quietly, consistently, and in all the right ways.

//French//

J’ai toujours voulu rendre mon site WordPress plus rapide. J’avais déjà joué un peu dans les optimisations côté serveur, mais avec mon hébergement business, j’étais pas mal limité. C’est là que je suis tombé sur atec Cache APCu, pis honnêtement… wow.

C’est pas un plugin tape-à-l’œil, mais il fait clairement la job. Depuis que je l’ai installé, mon site est plus fluide, autant pour les visiteurs que dans le tableau de bord. C’est super léger, pis ça consomme presque rien côté ressources serveur. Parfait pour de l’hébergement partagé.

Mais ce qui m’a vraiment accroché, c’est le service du développeur, Chris. J’ai eu un petit bug après une mise à jour. Je m’attendais à attendre une semaine (comme d’hab), mais non — il m’a répondu dans la journée, pis tout a été réglé super vite. Ça, c’est rare. Pis ça donne confiance.

J’utilise atec Cache APCu depuis la version 1.x, donc je peux dire que ça a beaucoup évolué. Avec la dernière version, mon taux de réussite du Object Cache dépasse 98 %, pis celui de APCu est autour de 85 %. Je le vois directement dans les stats. Et pour vrai, mon site de critiques techno a vu une bonne amélioration côté performance… et même un peu plus de trafic.

Là, je pense sérieusement prendre la version PRO. Je suis pas du genre à acheter des plugins à tout bout de champ, mais l’idée d’optimiser les options autoload pis le comportement du cache interne, ça me parle. Surtout quand tu sais que le développeur est fiable.

Bref, si ton site WordPress rame un peu pis que t’as pas envie de plonger dans des configs serveur complexes, installe ça. Tu vas voir la différence — pas de fla-fla, juste du solide.

2.3.58 [2025.11.04]

  • SVN cleanup

2.3.57 [2025.11.04]

  • Improved woo-skip

2.3.56 [2025.10.21]

  • @header(\’Vary: Accept-Encoding\’);

2.3.55 [2025.10.12]

  • Fixed is_user_logged_in()

2.3.54 [2025.10.11]

  • Everest Forms FIX

2.3.53 [2025.09.27]

  • Plugin prefix fixed for all

2.3.52 [2025.09.09]

  • Fixed get_plugin_base_root on WIN

2.3.51 [2025.08.10]

  • SVN update and WP clean upload

2.3.50 [2025.08.09]

  • SVN WORKS

2.3.44 [2025.08.09]

  • SVN should work now

2.3.43 [2025.08.09]

  • SVN update

2.3.42 [2025.08.09]

  • SVN update

2.3.41 [2025.08.09]

  • SVN update

2.3.40 [2025.08.09]

  • Testing new SVN script

2.3.39 [2025.08.09]

  • Testing new SVN script

2.3.38 [2025.08.06]

  • get_plugin_base_root 👈 one level up

2.3.37 [2025.08.06]

  • Removed var_dump

2.3.36 [2025.08.06]

  • Fixed get_plugin_base_root on WIN

2.3.35 [2025.08.03]

  • Changes after review

2.3.34 [2025.07.30]

  • error_log removed

2.3.33 [2025.07.30]

  • WP_PLUGIN_DIR

2.3.32 [2025.07.30]

  • SVN update

2.3.31 [2025.07.30]

  • if (defined(\’DONOTCACHEPAGE\’) && DONOTCACHEPAGE) return; // Skip serving cache

2.3.30 [2025.07.23]

  • Line 424 in INIT fixed

2.3.29 [2025.07.22]

  • Position of define( \’WP_CACHE\’, true );

2.3.28 [2025.07.22]

  • define( \’WP_CACHE\’, true ); // added by atec-Plugins

2.3.27 [2025.07.22]

  • Content-Length

2.3.26 [2025.07.22]

  • SVN update

2.3.25 [2025.07.19]

  • Framework changes, new ALIAS class
  • Respects DONOTCACHEPAGE constant — skips caching if defined on page.

2.3.24 [2025.07.08]

  • OC 2.0.6

2.3.21 [2025.07.08]

  • Fixed add/replace issue, updated flush() and flush_group(), Fixed admin_notice on enabling/disabling OC

2.3.20 [2025.07.03]

  • Framework change: Dashboard, SVG

2.3.19 [2025.07.02]

  • Fixed $cache in flush_cache

2.3.18 [2025.06.28]

  • Framework change: progress(); ALIAS class

2.3.17 [2025.06.26]

  • Framework change: Removed mixed …$args

2.3.16 [2025.06.26]

  • Fixed set_p(..$expire)

2.3.15 [2025.06.26]

  • Framework change, admin_debug_all()

2.3.14 [2025.06.26]

  • Removed safe_unserialize and improved serializer handling

2.3.13 [2025.06.25]

  • Cleanup old MU ADV CACHE

2.3.12 [2025.06.25]

  • Fixed delete PC item

2.3.11 [2025.06.25]

  • Cleanup PC for v2.1

2.3.10 [2025.06.25]

  • Flushing opcache on install

2.3.9 [2025.06.25]

  • New PC install script and wp-config

2.3.8 [2025.06.24]

  • Fixed PC Flush and old OC / PC compatibility

2.3.7 [2025.06.24]

  • Framework change | License check improved

2.3.5 [2025.06.19]

  • Fixed LOADER for windows

2.1.97 [2025.04.30]

  • AWF now fully namespaced
  • Minor fixes and profiler tweak

2.1.95 [2025.04.23]

  • NAMESPACE implemented
  • Object cache logger upgrade

2.1.94 [2025.04.23]

  • before profiler_debug removed

2.1.93 [2025.04.06]

  • Framework change

2.1.92 [2025.04.05]

  • alloptions/cron fix

2.1.91 [2025.04.03]

  • New FS

2.1.89 [2025.03.28]

  • New OC enabling

2.1.88 [2025.03.28]

  • Always save settings

2.1.86 [2025.03.16]

  • New style.css and check.css

2.1.85 [2025.03.14]

  • wp_redirect(admin_url()

2.1.84 [2025.03.07]

  • Removed redirect

2.1.83 [2025.03.07]

  • OC 1.0.21

2.1.82 [2025.03.07]

  • define(\’ATEC_APCU_OC_VERSION\’,\’1.0.16\’);

2.1.81 [2025.03.07]

  • Fixed object caching (unserialize)

2.1.80 [2025.03.07]

  • Fixed post_type

2.1.79 [2025.03.04]

  • Framework changes

2.1.78 [2025.03.03]

  • New OC install routine

2.1.76 [2025.02.28]

  • atec_wpca_oc_stats

2.1.75 [2025.02.26]

  • add_action(\’init\’, function() { require(\’atec-cache-apcu-pcache-cb.php\’);

2.1.74 [2025.02.24]

  • Fixed callback

2.1.73 [2025.02.23]

  • alloptions unserialize

2.1.72 [2025.02.23]

  • Flush Cache Indicator

2.1.71 [2025.02.22]

  • Flush alloptions

2.1.70 [2025.02.22]

  • wp_cache flush

2.1.69 [2025.02.20]

  • Remove OCache cleanup

2.1.68 [2025.02.15]

  • (function() {

2.1.67 [2025.02.14]

  • $wp_query

2.1.66 [2025.02.14]

  • Fixed $atec_wpca_pcache_params

2.1.65 [2025.02.14]

  • Fixed the fix routine

2.1.64 [2025.02.14]

  • Improved cache check

2.1.63 [2025.02.13]

  • Base on send_headers

2.1.62 [2025.02.13]

  • Minor fix

2.1.61 [2025.02.10]

  • New atec-fs filesystem

2.1.60 [2025.02.07]

  • OC fix pre_update_option

2.1.59 [2025.02.05]

  • Settings fixed

2.1.58 [2025.02.05]

  • New flushing

2.1.57 [2025.02.05]

  • Verify cache settings

2.1.56 [2025.02.04]

  • atec_warning_msg

2.1.55 [2025.02.03]

  • Spanish translation

2.1.53 [2025.02.03]

  • includes/atec-cache-apcu-pcache-tools.php

2.1.52 [2025.02.03]

  • Updated atec-check.js

2.1.51 [2025.02.02]

  • Russian translation updated

2.1.50 [2025.02.02]

  • French translation by Stephane

2.1.47 [2025.02.02]

  • Framework changes (atec-check)

2.1.46 [2025.02.02]

  • Added settings sanitizing

2.1.44 [2025.01.29]

  • Fixed wp_cache_flush

2.1.43 [2025.01.29]

  • define(\’ATEC_TOOLS_INC\’,true); // just for backwards compatibility

2.1.42 [2025.01.27]

  • Flush Icon in admin bar for OC & PC

2.1.41 [2025.01.26]

  • Fixed require path

2.1.40 [2025.01.26]

  • switched require_once -> require

2.1.39 [2025.01.26]

  • atec-check issue?

2.1.38 [2025.01.26]

  • ATEC_WPcache_info

2.1.37 [2025.01.22]

  • wp_cache flush

2.1.36 [2025.01.21]

  • Sort group list

2.1.35 [2025.01.18]

  • Optimized APCu Info

2.1.34 [2025.01.17]

  • Check button replaced

2.1.32 [2025.01.17]

  • new atec-check

2.1.31 [2025.01.17]

  • Fixed invalid header

2.1.30 [2025.01.16]

  • Translation update

2.1.29 [2025.01.16]

  • New object cache activation

2.1.28 [2025.01.16]

  • SVN cleanup

2.1.27 [2025.01.16]

  • German translation

2.1.26 [2025.01.10]

  • wp_cache_delete(\’active_plugins\’,\’options\’);

2.1.25 [2025.01.06]

  • Removed server-info and memory-info

2.1.24 [2025.01.06]

  • Optimized install routine

2.1.23 [2025.01.05]

  • Fixed APcu Groups

2.1.22 [2024.12.30]

  • Fixed ATEC_OC_KEY_SALT

2.1.21 [2024.12.27]

  • Advanced page cache

2.1.20 [2024.12.24]

  • Fixed style sheet

2.1.19 [2024.12.21]

  • Clean up

2.1.17 [2024.12.21]

  • New styles, cleaned up .svg

2.1.16 [2024.12.17]

  • On plugin change: wp_cache_delete(\’plugins\’,\’plugins\’);

2.1.15 [2024.12.12]

  • Toogle admin bar – improved

2.1.14 [2024.12.10]

  • atec_wpca_delete_wp_cache

2.1.13 [2024.12.09]

  • if (!class_exists(\’APCUIterator\’)) …

2.1.12 [2024.12.07]

  • Optional flush button

2.1.11 [2024.12.07]

  • Toogle admin bar display

2.1.10 [2024.11.27]

  • Improved plugin activation routine

2.1.9 [2024.11.27]

  • Cleanup routine moved up one level; Defined ATEC_admin_bar_memory

2.1.8 [2024.11.23]

  • Fixed admin Flush button

2.1.7 [2024.11.22]

  • Optimized atec-*-install.php routine

2.1.6 [2024.11.21]

  • JIT issue fixed

2.1.5 [2024.11.21]

  • Improved OPC stats

2.1.3, 2.1.4 [2024.11.18]

  • if (file_exists($include)) @include_once($include);
  • ob_flush() issue

2.1.1, 2.1.2 [2024.11.17]

  • APCu help und persisten OC test

2.1 [2024.11.13]

  • advanced cache, fixed atec_wpca_delete_page_cache_all()

2.0.12 [2024.10.24]

  • disabled_functions

2.0.11 [2024.10.10]

  • $_POST

2.0.10 [2024.10.09]

  • new translation

2.0.6, 2.0.6, 2.0.7, 2.0.8, 2.0.9 [2024.10.03]

  • new object-cache

2.0.3, 2.0.4 [2024.10.01]

  • atec_wpca fix
  • inc/dec fix

2.0, 2.0.1, 2.0.2 [2024.09.29]

  • new object-cache
  • fixed page_id=0
  • OC update notice

1.9.7 [2024.09.23]

  • skip Woo pages

1.9.6 [2024.09.17]

  • flush “plugins” cache

1.9.5 [2024.09.05]

  • Removed plugin install feature

1.9.4 [2024.08.26]

  • OPC info

1.9.2, 1.9.3 [2024.08.21]

  • framework changes

1.8.9, 1.9.1 [2024.08.13]

  • new pcache (gzip) and zlib error protection

1.8.9, 1.9.0 [2024.08.08]

  • license code, cache fix

1.8.7 [2024.07.23]

  • pcache_delete_all

1.8.3, 1.8.4 [2024.07.23]

  • x-cache, tags

1.8.2 [2024.07.20]

  • bug fix

1.7.6, 1.8.1 [2024.07.18]

  • feeds, auto salt, bug fix

1.7.5 [2024.07.16]

  • create/delete category

1.7.4 [2024.07.05]

  • salt

1.6.9, 1.7, 1.7.2 [2024.07.02]

  • wp_cache_set

1.6.7 [2024.06.26]

  • deploy

1.6.3 [2024.06.10]

  • no more submenu

1.6, 1.6.1 [2024.06.08]

  • bug fix

1.5.8, 1.5.9 [2024.06.07]

  • atec-check

1.5.6 [2024.06.05]

  • WP 6.5.4 approved

1.5.5 [2024.06.01]

  • max_accelerated_files, interned_strings_buffer, revalidate_freq

1.5.4 [2024.05.30]

  • del PCcache

1.5.3 [2024.05.27]

  • push update

1.5.2 [2024.05.23]

  • new PCache key handling
  • translation

1.5.1 [2024.05.23]

  • PCache fix & show debug
  • Cache product pages

1.4.8 [2024.05.18]

  • x-cache-enabled

1.4.6, 1.4.7 [2024.05.17]

  • new install routine, bug fix

1.4.3, 1.4.4, 1.4.5 [2024.05.14]

  • new atec-wp-plugin-framework
  • new object_cache.php, Version: 1.2

1.4.0 [2024.04.29]

  • register_activation_hook

1.3.5 [2024.04.14]

  • server info

1.3.3 [2024.04.01]

  • requestUrl | port

1.3.1, 1.3.2 [2024.03.29]

  • OPcache bug fix

1.3.0 [2024.03.28]

  • tabs

1.2.9 [2024.03.27]

  • new grid

1.2.8 [2024.03.24]

  • admin menu atec group

1.2.7 [2024.03.23]

  • PCache bug fix, PCache always gzip

1.2.6 [2024.03.21]

  • check boxes

1.2.5 [2024.03.19]

  • APCu flush improved

1.2.4 [2024.03.15]

  • new atec-style

1.2.3 [2024.03.13]

  • changes according to plugin check

1.2, 1.2.2 [2024.02.23]

  • new options

1.2, 1.2.1 [2024.02.22]

  • fixed install

1.1.6 [2024.02.22]

  • fixed settings

1.1.4, 1.1.5 [2024.02.21]

  • fixed minify, page cache

1.1.2, 1.1.3 [2024.02.20]

  • fixed URL bug

1.1.1 [2023.09.14]

  • woocommerce Styles

1.1 [2023.07.21]

  • Tested with WP 6.3

1.1 [2023.05.07]

  • Changes requested by WordPress.org review team

1.0 [2023.04.07]

  • Initial Release
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