Performance Configuration

Scottsdale Mint uses several performance optimization tools and strategies to maintain fast page loads despite real-time precious metals pricing updates and high product catalog volume.

---

Perfmatters

Plugin: perfmatters (with web/app/mu-plugins/a-suma-perfmatters-filters.php override)

Perfmatters provides granular control over which scripts, styles, and features are loaded on each page.

Cache Path Override

The MU plugin overrides the default cache directory:

// a-suma-perfmatters-filters.php
add_filter( 'perfmatters_cache_path', function() {
    return WP_CONTENT_DIR . '/uploads/perfmatters/cache/';
} );

This puts the cache inside /uploads/ which is mapped to S3 on Ymir, ensuring cache files persist across Lambda invocations.

Features Configured

Feature	Setting	Notes
Script Manager	Enabled	Per-page script disabling
Database Cleanup	Enabled	Auto-draft posts, transients, revisions
Lazy Loading	Enabled	Images, iframes
Local Google Fonts	Enabled	GDPR compliance, avoids Google DNS lookup
Disable Embeds	Enabled	Removes WordPress oEmbed overhead
Disable WP Emoji	Enabled	Removes emoji CSS/JS
Heartbeat	Managed	Disabled on front-end, controlled on admin

---

Scalability Pro

Plugin: scalability-pro

Addresses WooCommerce performance issues at scale.

Key Optimizations

Deferred Term Counts:

• WooCommerce normally updates product category and tag counts on every order and stock change
• With large catalogs, this causes database lock contention
• Scalability Pro defers count updates to run asynchronously

Query Optimization:

• Optimizes complex WooCommerce meta queries
• Reduces query count on product listing pages

---

Object Cache Pro (Redis)

See Caching Architecture for full Redis configuration details.

Key performance settings:

define( 'WP_REDIS_IGBINARY', true );      // 50-70% smaller serialized objects vs PHP serialize
define( 'WP_REDIS_COMPRESSION', 'zstd' ); // Fast compression, high ratio
define( 'WP_REDIS_CONFIG', [
    'split_alloptions' => true,           // Prevents single large cache key stampedes
    'prefetch'         => false,          // Avoids loading all alloptions on every request
] );

---

CloudFront CDN

See Caching Architecture for CloudFront setup.

Key performance settings in ymir.yml:

• image_processing: true — On-the-fly image resizing at CloudFront edge
• Cookie whitelist — Only WooCommerce session cookies bust cache (prevents unnecessary cache misses)
• Excluded paths — Only /cart, /checkout, /my-account bypass cache

---

WordPress Core Performance Constants

// No post revisions (saves DB rows)
define( 'WP_POST_REVISIONS', false );

// Effectively disables autosave (reduces DB writes)
define( 'AUTOSAVE_INTERVAL', 9999999 );

// Yoast redirects handled at CDN/server level
define( 'WPSEO_DISABLE_PHP_REDIRECTS', true );

// External cron (no page-load overhead for scheduled tasks)
define( 'DISABLE_WP_CRON', true );

---

Image Optimization

Plugin: tiny-compress-images (TinyPNG/TinyJPG integration)

• Images are automatically compressed on upload via TinyPNG API
• CloudFront CloudFront handles responsive image resizing at the edge
• Perfmatters lazy-loads images below the fold

---

WooCommerce Performance

Reserved Stock Pro

Plugin: reserved-stock-pro

During checkout, this plugin temporarily reserves stock for items in an active cart/checkout session. This prevents overselling on high-demand products without immediately decrementing the publicly-visible stock count.

Disable WooCommerce Blocks (mu-plugins/disable-woocommerce-block.php)

WooCommerce ships with block-editor-based cart and checkout. These blocks are disabled to use the classic PHP-template-based checkout (which integrates with all custom payment gateways).

add_filter( 'woocommerce_block_template_area_is_active', '__return_false' );

WC Legacy REST API

The woocommerce-legacy-rest-api plugin is included to maintain backward compatibility with external integrations that use the v1/v2 WC REST API.

---

Development vs Production Asset Loading

Asset	Development	Production
Theme CSS (dist/css/global.css)	Source maps included	Minified
Theme JS (dist/js/global.js)	Unminified	Minified, tree-shaken
WooCommerce CSS	Dequeued and replaced by theme CSS	Same
NFusion Chart Widget	Development build	Production build
Elementor	Standard	Optimized via Perfmatters script manager

Assets are compiled via Webpack Mix:

npm run dev        # Development (source maps, watch mode)
npm run production # Production (minified, tree-shaken)