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From PHP to C: A Cache Odyssey

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@hsntgm hsntgm released this 04 Oct 23:05
· 2 commits to main since this release
v2.1.4
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Learn about vigilant mode.

🚀 Nginx Cache Purge Preload — v2.1.4

Where Scripts End, safexec Begins.

🛠️ 48 files changed  |  ➕ 9,140 lines  |  ➖ 1,854 lines — Refactored. Reinforced. Ready.

✨ What’s New

🔎 Nginx Cache Analyzer (major)

The Advanced Tab is now a unified cache dashboard.

  • See one clean list merging your last Preload crawl with what’s currently in cache — HITs and MISSes side-by-side.
  • Treat it like a site-crawl snapshot: review your actual Nginx cache state and act in one place.
  • Instantly spot MISS pages and Preload or Purge specific URLs on the spot to keep performance sharp.

🛡️ safexec (major) — hardened shell backend

  • New privilege-dropping wrapper (written in C) that safely runs commands used by the NPP (replaces raw shell_exec paths).
  • Drops privileges to a low-privilege user (nobody) and scrubs the environment.
  • Normalizes URLs during Preload to avoid encoding-based cache misses.
  • Control percent-encoding behavior during Preload:
    • OFF, PRESERVE, UPPER, LOWER.

Recommended for users concerned about shell execution.
See Help Tab → safexec for details or deep dive here.

🔁 Purge Scope: Related Pages (major)

Credit: @pasqualerussi ➡️

  • When purging a URL (manually or via auto-purge on content updates), optionally also purge related areas:
    • Homepage, Shop, Category archives, etc.
  • After purge, the plugin can immediately Preload those related URLs so they’re warm again in cache.

🧭 Setup Wizard & Assume-Nginx (major)

Credit: @FrAllard ➡️

  • A guided first-run Setup Wizard for quick, safe configuration.
  • Assume-Nginx Mode for environments where detection fails or nginx.conf isn’t accessible (proxies/CDNs, containers, Plesk/cPanel).
  • Auto-disables Assume-Nginx mode when a real nginx.conf is detected.
  • Improved detection using HTTP headers and system signals.

⚙️ Performance, UX & Compatibility

  • Significant disk I/O optimizations for large sites.
  • Toast notifications and UI polish.
  • Better Elementor / Gutenberg compatibility for Auto Purge.
  • Numerous bug fixes, security hardening, and a fresh header animation for NPP.

🧩 Where to Find Things

  • Cache Analyzer: Advanced Tab
  • safexec & URL-encoding modes: Help Tab → safexec (and Preload settings)
  • Purge Scope (Related Pages): Settings → Purge / Auto-Purge
  • Setup Wizard / Assume-Nginx: Appears on first run or when detection is inconclusive

🔄 Upgrade Notes (Recommended)

  1. Update the plugin to v2.1.4 as usual.
  2. Visit Settings → Purge / Auto-Purge and review Purge Scope options.
  3. In Preload settings, choose the URL Normalization mode that fits your site.
  4. If prompted, run the Setup Wizard (or enable Assume-Nginx Mode if your environment hides nginx.conf).
  5. Open Advanced Tab → Cache Analyzer to take a quick snapshot of current HIT/MISS and optionally Preload misses.

🙏 Credits

Huge thanks to everyone who tested and shared feedback — and special shout-outs to @pasqualerussi and @FrAllard for their contributions. 💙

📜 Changelog (Short)

  • Add: Nginx Cache Analyzer (Advanced Tab) with unified HIT/MISS dashboard.
  • Add: safexec privilege-dropping wrapper; URL percent-encoding control for Preload.
  • Add: Purge Scope (Related Pages) on manual and auto-purge + optional instant Preload.
  • Add: Setup Wizard + Assume-Nginx mode, with auto-disable when real nginx.conf is detected.
  • Improve: Nginx detection via headers and system signals.
  • Improve: Disk I/O performance for large sites.
  • Improve: Elementor/Gutenberg auto-purge compatibility; UI with toast notifications.
  • Fix: Various bugs and security hardening.
  • Polish: New header animation and minor UI tweaks.

Contributors

FrAllard and pasqualerussi
Assets 8
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