Session Shredder for WooCommerce vs DietPress

Session Shredder is a production-grade, rule-based session cleanup plugin for WooCommerce 10.3+. WooCommerce 10.3 introduces experimental guest session storage and auto-pruning. Session Shredder builds directly on this already available foundation and adds behavior-based heuristics that predict which sessions are zombies (safe to prune) versus keepers (should be retained). Highlights – Heuristic pruning – Uses anonymized features (session age, pageviews, cart value, etc.) and conservative rules to identify low-value sessions. – Configurable rules & thresholds – Tune base age, hard timeout, bounce detection, and cart-protection rules from a dedicated WooCommerce settings screen. – Safe thresholds – Only considers sessions past a base age window and is biased towards keeping anything that shows meaningful activity or cart value. – Robust behavior – Even if tracking data is sparse, a conservative rule-based strategy kicks in (e.g. hard 72h timeout, bounces with no cart value). – Privacy-first – No PII is stored. Session IDs and countries are hashed; only coarse behavioral data is used. – Native Woo 10.3 integration – Reads from the WooCommerce session table (supports both legacy and new tables) and plays nicely with the core experimental pruning. – HPOS compatible – Declares compatibility with WooCommerce High-Performance Order Storage (custom order tables) and never touches orders, only session data. – Admin dashboard – Under WooCommerce → Session Shredder you get active sessions, pruned counts, a Chart.js visualization of active & pruned sessions per run, and a compact “Recent runs” summary. – Logging & observability – Uses wc_get_logger() for info/error logging; integrates cleanly with existing WooCommerce logs. Session Shredder is structured for real-world stores and designed as a companion to WooCommerce’s experimental guest session engine. It stays fully rule-based out of the box, but developers can extend it via hooks if they ever want to plug in external scoring services or AI endpoints. Why not rely only on the WooCommerce experimental pruning? – Core experimental pruning is largely age-based and opaque. – Session Shredder adds behavior-aware rules (pageviews, cart value, bounce flag) on top of age. – You get a dry-run mode to analyze impact before deleting anything. – The dashboard gives you visibility into how many sessions were pruned per run and how many sessions remained active. – WP-CLI commands let you script and automate analyze/prune runs. – It works alongside WooCommerce experimental guest sessions and HPOS rather than replacing them: Woo can still prune based on its own rules, while Session Shredder adds a tunable, rule-based layer with better reporting. How It Works Feature collection – On each page load, Session Shredder tracks session activity: – Session age (hours since first seen) – Pageviews count – Cart value (numeric) – Whether anything was added to cart – Geolocation hash (hashed billing/shipping country) – Simple bounce indicator (single pageview, no cart) – Features are stored per-session in non-autoloaded options and never include raw session IDs or user identifiers. Rule-based pruning – An hourly cron (session_shredder_cron) scans the WooCommerce session table for candidates based on age. – For each candidate, the plugin: – Loads stored features – Applies conservative rules like: – Session older than a hard timeout window (e.g. 72 hours) – Single pageview and no cart value – If the rules deem the session a low-value “zombie”, it is pruned. Stats & visualization – After each real run, Session Shredder records: – Total pruned sessions (lifetime and today) – A short history of recent runs, including how many sessions were pruned and how many remained active before/after each run – The admin dashboard renders a Chart.js line graph of active & pruned sessions per run via a secure AJAX endpoint, plus a compact “Recent runs” table. For developers Session Shredder exposes a small set of hooks and CLI commands so you can integrate it into more advanced workflows without forking the plugin. Hooks – session_shredder_features( array $features, string $session_hash ) – Filter the behavior feature array before it is stored and later used for pruning decisions. – $session_hash is a hashed identifier of the session (no raw IDs or PII). – session_shredder_base_age_hours( float $base_age_hours ) – Adjust the base age window (in hours) before sessions are considered as prune candidates. – session_shredder_should_prune( bool $should_prune, array $features ) – Override or refine the core rule-based decision for a given session. – session_shredder_feature_options_soft_limit( int $soft_limit ) – Adjust the soft cap for how many per-session feature options (session_shredder_features_*) are kept in wp_options before garbage collection trims the oldest entries. – session_shredder_feature_options_gc_batch( int $batch_size ) – Adjust how many feature options are removed per garbage-collection pass when the soft limit is exceeded. Larger values clean up faster; smaller values spread work over more runs. – session_shredder_before_run( float $base_age_hours, bool $dry_run ) – Fires before a prune run (cron, manual, or CLI) starts. – session_shredder_after_run( int $pruned_count, bool $dry_run ) – Fires after a prune run completes (dry-run or real). – session_shredder_pruned( int $pruned_count ) – Fires after a real prune run that actually deletes sessions; useful for logging or additional cleanup. WP-CLI commands If WP-CLI is available, Session Shredder registers the following commands: – wp session-shredder analyze – Performs a dry run using the current rules and settings. – Outputs the total number of sessions and how many would be pruned, without deleting anything. – wp session-shredder prune – Runs a real prune using the current rules and settings. – Deletes matching sessions, updates stats, and logs a summary.

DietPress is a free WordPress speed optimization plugin with a built-in page cache. Page caching, browser caching, GZIP and Brotli compression, deferred JavaScript, critical CSS, image loading attributes, preloading, locally hosted Google Fonts and selective asset loading, all in one plugin and all free. And it goes further than a caching plugin: it also puts WordPress itself on a diet, switching off the features your site never uses. It pairs that with a clean, risk-based interface. Everything is configurable, the optimizations are already on by default, and nothing is hidden behind a paid tier. Activate it and your site is faster, or open the settings and tune every detail. By default WordPress loads functions, services and scripts that most sites do not need. They slow down loading times and consume hosting resources. DietPress lets you trim that fat and apply battle-tested performance tweaks, with a clear description of what each option does and what might break, organized by risk level so you always know what is safe. WHY CHOOSE DIETPRESS Page caching, for free. Serve anonymous visitors a copy stored on disk instead of building the page again. The feature people buy WP Rocket or a NitroPack subscription for, with no licence and no monthly fee. No drop-in, no changes to wp-config.php. Unlike WP Super Cache or W3 Total Cache, DietPress installs no advanced-cache.php and never edits wp-config.php. Switching it off leaves your site exactly as it was, with nothing orphaned behind. It tells you why. Most cache plugins leave you guessing when nothing is cached. DietPress reports its own status, tests itself against your home page, and names the exact reason a page was skipped. WooCommerce-safe by design. Carts, checkout, my account and any visitor carrying a cart cookie always get the live site, so nobody ever sees somebody else’s basket. Diet as well as speed. Where Perfmatters focuses on disabling scripts, DietPress covers that ground and adds page caching, critical CSS, local Google Fonts and a dashboard, admin and email cleanup, in one plugin. Light on your server. No account, no external service, no telemetry, no upsell nags. Everything runs on your own hosting. WHAT THE PAGE CACHE DOES TO YOUR RESPONSE TIME Measured on a WordPress 7.0 install with GeneratePress, WooCommerce and a 76 product catalogue, PHP 8.5, taking the median of 15 requests per URL. Your own hosting will give different figures, but the shape of the result will not change. Server response time, the same pages with the page cache off and on: Home page – 52.7 ms without, 15.1 ms with, 71% faster WooCommerce shop – 45.4 ms without, 14.8 ms with, 67% faster A 110 KB article – 43.0 ms without, 15.1 ms with, 65% faster A 98 KB page – 41.0 ms without, 14.9 ms with, 64% faster A product category – 41.3 ms without, 15.1 ms with, 63% faster The interesting part is not the percentage, it is that the cached figure barely moves. Serving a stored file costs the same whether the page was cheap or expensive to build, so the saving grows with the size of your site rather than with the power of your server. The heaviest page in the test is the one that gained most. It also changes how much traffic your hosting can take at once. In the same test the server went from serving about 40 visits a second to more than 210, five times as many, on exactly the same plan. That is what keeps a small site standing up when one of your posts does well. TWO THINGS IN ONE PLUGIN 1. Performance optimizations (on by default) Automatic Critical CSS inlined in the head (optional experimental deferral of non-critical CSS) JavaScript defer parsing with smart dependency handling Image loading attributes safety net: lazy loading, decoding=async and fetchpriority for images that bypass core Automatic image dimensions for better CLS scores (including picture elements) Resource hints: preconnect and DNS prefetch for common third-party origins Theme stylesheet, critical fonts and logo preloading for a faster LCP Google Fonts display=swap Google Fonts local hosting: serve the fonts your theme uses from your own server, GDPR-friendly with a silent fallback to the Google CDN (opt-in) Selective third-party loading: WooCommerce, Contact Form 7, block library, Slider Revolution, TablePress, Smash Balloon, Formidable Forms and Everest Forms assets only load where they are used (opt-in) RSS feed optimization (cache headers and item limit) Server rules in .htaccess: browser caching with a configurable lifetime for media, for styles and scripts and for fonts, GZIP and Brotli compression, immutable cache headers, CORS for fonts and keep-alive (master switch plus per-feature toggles) Database maintenance: daily expired-transient cleanup and safe query optimizations Page cache: store each page on disk and serve it to anonymous visitors without building it again, with automatic purging, gzip precompression and a status panel that says whether it is working (opt-in, in its own tab) 2. Put WordPress on a diet (risk-based, opt-in) Light (safe for any site): emojis, RSD/WLW tags, shortlinks, self-pingbacks, comment pagination, and more Moderate (evaluate first): oEmbed, jQuery Migrate, Dashicons on the frontend, Global Styles and Duotone, remote block patterns, avatars and Gravatar, comment threading, and more Strict (site-specific): granular RSS feed control, Heartbeat API mode, post revisions and autosave, disable comments, XML sitemap, native lazy loading/fetchpriority, content types, selective loading for WooCommerce, Contact Form 7, block assets, Slider Revolution, TablePress, Smash Balloon, Formidable Forms and Everest Forms, and more Widgets: dashboard widgets (including third-party ones from Yoast, WooCommerce, Elementor, Jetpack, Wordfence, Rank Math, Gravity Forms), classic sidebar widgets, block-editor widgets and the Customizer Emails: silence the automatic emails WordPress sends on its own, grouped by area: auto-update results for core, plugins and themes (plus the new-version notice), comment moderation and new-comment notices, and new user, password and email-change notices, plus toggles for the admin email verification prompt and post-by-email. Every option is off by default, and critical notices such as a failed core update are always kept SCALE, PROFILES AND ANALYZER Savings indicator: HTTP requests removed, CSS/JS saved and active optimizations at a glance Quick profiles: Personal Blog, WooCommerce Store, Landing Page and Maximum Cleanup Site analyzer: personalized recommendations based on your active plugins and content, page cache included Import and export your whole configuration as a JSON file COMPATIBILITY AND EXTENSIBILITY The plugin includes filters for developers: dietpress_critical_css – Customize the inline critical CSS dietpress_critical_css_handles – Define which CSS handles are critical dietpress_skip_defer_script_handles – Opt scripts out of the JavaScript defer dietpress_skip_defer_style_handles – Opt stylesheets out of the CSS deferral dietpress_preconnect_hints – Customize preconnect origins dietpress_dns_prefetch_domains – Customize DNS prefetch domains dietpress_critical_fonts – Define critical fonts to preload dietpress_exclude_local_fonts – Exclude Google Fonts stylesheets from local hosting dietpress_selective_{module}_has_content – Mark a page as showing the content of a selective loading module, so its assets are kept. The module is wc, cf7, formidable, everest_forms or revslider dietpress_selective_{module}_styles / dietpress_selective_{module}_scripts – Adjust the handles removed by each module dietpress_selective_page_hides_content – Mark a page as rendering content the content scan cannot reach, so no module removes anything (this is what handles Elementor) dietpress_selective_is_wc_page – Override the WooCommerce page detection of selective loading dietpress_selective_wc_keep_cart_fragments – Keep the cart fragments script when your theme has a hand-coded mini-cart dietpress_selective_cf7_has_form – Mark pages that load a Contact Form 7 form dynamically dietpress_selective_blocks_dequeue – Override the block library dequeue decision dietpress_selective_everest_forms_dequeue_dashicons – Keep Dashicons when another plugin enqueues it directly dietpress_native_sitemap_in_use – Tell DietPress your plugin builds on the native WordPress sitemap, so the option that removes it becomes unavailable dietpress_cache_bypass – Keep the current page out of the page cache dietpress_cache_bypass_cookies – Adjust the cookie name prefixes that make a visitor uncacheable dietpress_cache_ignored_params – Adjust the query parameters that do not change the page dietpress_cache_exclude_urls – Adjust the excluded URL patterns dietpress_cache_post_urls – Adjust the URLs purged along with a post Compatible with: Well-coded themes and page builders (Divi, Elementor, Beaver Builder, Bricks Gutenberg) Cache plugins (WP Rocket, LiteSpeed Cache, W3 Total Cache, WP Super Cache, etc.). The one exception is the optional page cache module, which will not run beside another page cache and says so; everything else in DietPress works alongside them as it always has Security plugins (DietPress focuses on performance and deliberately leaves security to them; we recommend our free Vigilant) CDNs (Cloudflare, StackPath, KeyCDN, etc.) thanks to CORS and Vary headers WordPress Multisite (except the optional page cache module, which does not support it yet) HOW TO VERIFY THE OPTIMIZATIONS Cache rules: check your .htaccess for a block marked # BEGIN DietPress with immutable Cache-Control headers Logo preload: view page source and look for pointing to your logo Critical CSS: view source and look for in the head Compression: test at giftofspeed.com/gzip-test Always measure with tools like Google PageSpeed, GTMetrix or WebPageTest, and run each test at least twice to account for caching. Support Need private support or custom development? Do you need one-on-one help, priority troubleshooting, or a custom feature, integration, or tweak built specifically for your site? I offer private support and custom development. Just contact me and tell me what you need. Need help or have suggestions? Official website WordPress support forum YouTube channel Documentation and tutorials Love the plugin? Please leave us a 5-star review and help spread the word! About AyudaWP We are specialists in WordPress security, SEO, AI and performance optimization plugins. We create tools that solve real problems for WordPress site owners while maintaining the highest coding standards and accessibility requirements.