by Celsius Anderson 0 (0 reviews)

LumenCache

Name: LumenCache
Author: Celsius Anderson

RAM-first full-page caching that serves pages before WordPress loads, with automatic WooCommerce and LMS integration.

LumenCache ranks #34,485 among WordPress.org plugins with 10+ active installations, is #4,635 of 14,124 in the E-commerce category, and was last updated Oct 28, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1.4

v1.8.5 Current Version v1.8.5

Updated 1 week ago Last Update on 28 Oct, 2026

Refreshed 1 week ago Last Refreshed on

#4,635 of 14,124 in E-commerce Top 50% by installs Downloads +97.9% this week Actively maintained

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Rank

#34,485

— No change

Active Installs

10+

-44.4%

KW Avg Position

N/A

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Downloads

594

+5 today

Support Resolved

— No change

Rating

Review 0 out of 5

0 (0 reviews)

Next Milestone 20

Total Progress 70%

10+ 20+

11,312

Ranks to Climb

Growth Needed

8,000,000

Active Installs

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

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Plugin Details

Version: 1.8.5
Last Updated: Oct 28, 2026
Requires WP: 6.0+
Tested Up To: 7.1.4
PHP Version: 8.1 or higher
Author: Celsius Anderson

Support & Rating

Rating: ☆ ☆ ☆ ☆ ☆ 0
Reviews: 0
Support Threads: 0
Resolved: 0%

Keywords

cache full page cache performance security woocommerce

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Frequently Asked Questions

Common questions about LumenCache

The recent critical vulnerabilities (such as the October 2026 php2shell flaws, CVE-2026-109618 and CVE-2026-109619) exploit internal C-level PHP engine memory lifecycles via HTTP request floods. While LumenCache is a caching engine and cannot patch the underlying PHP binary (which your hosting provider or sysadmin must update to patched point releases), LumenCache provides an immediate Attack Surface Reducer: Never Spawns PHP on Cache Hits: In server proxy mode, Nginx, Apache, or LiteSpeed serves cached pages directly from Redis/RAM in <1ms without starting a PHP worker or invoking the PHP interpreter. Deflects Automated Exploit Probing: Exploit scanners scanning your public pages hit static RAM storage, preventing malicious payloads from reaching PHP memory or triggering OOM crashes. Eliminates Worker Pool Starvation: Keeps your site fast and accessible during vulnerability disclosure waves by preventing botnet floods from exhausting PHP-FPM processes.

Nginx has a default fastcgi_buffer_size of only 4KB–8KB. When combining rich caching headers with WooCommerce session cookies, the upstream response header exceeds this limit. Nginx immediately terminates the connection with: upstream sent too big header while reading response header from upstream, resulting in an instant 502 Bad Gateway error. To resolve this, add the following FastCGI and proxy buffer directives to your Nginx configuration (within the http {}, server {}, or PHP location block): fastcgi_buffer_size 32k; fastcgi_buffers 16 16k; fastcgi_busy_buffers_size 32k; proxy_buffer_size 32k; proxy_buffers 16 16k; proxy_busy_buffers_size 32k; After adding these directives, test and reload Nginx: nginx -t && systemctl reload nginx

Two common causes: 1. Nginx config not applied — visit Server Setup and paste the config blocks. 2. WooCommerce session cookie — fixed in v1.1.0. Previous versions bypassed the cache for all visitors on WooCommerce sites due to the always-present wp_woocommerce_session_* cookie.

server-level configuration must use the same key strategy or it will produce cache misses. Disable the salt for a plain-key configuration, or use the compatible hashed-key server template.

Yes. LiteSpeed supports Apache-compatible .htaccess rewrites. LumenCache uses the Apache proxy mode on LiteSpeed. For better performance, ask your host

Yes — constants always take precedence over admin settings. If you define a constant, the corresponding field in the Settings tab is shown locked (read-only).