內容簡介
總結：Session Shredder 是一個針對 WooCommerce 10.3+ 的生產級、基於規則的會話清理外掛。它利用啟發式剪輯，預測哪些會話是可清理的「殭屍」，哪些是應該保留的「守護者」。
1. Session Shredder 是針對哪個版本的 WooCommerce 設計的？
Session Shredder 是針對 WooCommerce 10.3+ 設計的。
2. Session Shredder 如何協助使用者判斷要清理的會話？
Session Shredder 使用匿名特徵（如會話年齡、頁面瀏覽次數、購物車價值等）和保守規則進行啟發式剪輯，以辨識低價值的會話。
3. Session Shredder 的安全閾值是如何設計的？
Session Shredder 只考慮超出基本年齡窗口的會話，並傾向保留顯示有意義活動或購物車價值的內容。
4. Session Shredder 如何保護用戶隱私？
Session Shredder 不存儲個人識別信息（PII）。會話 ID 和國家已經過哈希處理，只使用粗略行為數據。
5. Session Shredder 如何與 WooCommerce 10.3 集成？
Session Shredder 讀取 WooCommerce 的會話表格（支援遺留和新表格），與核心實驗性剪輯功能相容。
6. Session Shredder 有進一步擴充的可能性嗎？
Session Shredder 在保持基本規則的基礎上設計，但開發者可以通過鉤子進行擴充。
外掛標籤
開發者團隊
② 後台搜尋「Session Shredder for WooCommerce」→ 直接安裝（推薦）
原文外掛簡介
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.
