📈 1. Architectural PageSpeed Optimization, Not Formal Fixes

In modern e-commerce, speed is not "optimization" or a set of cosmetic fixes — it is a fundamental architectural property. For large online stores with hundreds of thousands of products, complex filters, dynamic blocks, and active user interaction, any wrong decision at the start inevitably leads to degraded speed, SEO, and overall project stability.

At BooStore.pro, Google PageSpeed scores are a consequence of correct architecture, not just a set of tips. Typical "PageSpeed optimization" is limited to Lighthouse advice, formal resource reduction, and functional compromises.

That is why in BooStore.pro, speed was built not at the level of formal Google recommendations, but at the level of architectural thinking. As a result, the platform delivers instant page loading, lightning-fast search and filter operation, and stability even under high load.

Our real optimization score: 99%, 100%, 100%, 100% — check it yourself.

⚡ 2. Fully Deferred JavaScript Loading

Core platform principle: no JavaScript loads until the user needs it.

🔧 How It Works in Practice

• user clicks a button or interface element
• base script checks if the required module is loaded
• if not — the module loads in the background
• action is not repeated after loading finishes — after module load, all subsequent interactions are automatically handled by the new script's logic

This approach is used for: modal windows, UI elements, navigation, filters, auxiliary components.

Implementation example — https://boostore.pro/en/scripts_guide.html

📦 3. All Functional Scripts Split into Modules

Each function — a separate small script:

📌 Additional Library Splitting

Even if a slider library is loaded, it can be split into service files:

• Base script — product list initialization and loading
• Additional modules connected separately: mouse scrolling on desktop, horizontal scroll on mobile, auto-scroll for slides
• Each file loads only when active in settings

📱 4. Intelligent Mobile Menu Without Extra Load

The mobile menu is one of the heaviest components on any site. At BooStore.pro:

• Does not load if screen width exceeds the threshold — or if it's not a mobile device
• Does not initialize until the user interacts with the menu
• Loads only when actually needed

📩 Logic, Structure, and Content Separation

Examples:

🏠 mirsemyan.com.ua

📱 btq.in.ua — menu only < 900px + mobile

👁️ 5. Image Caching and Optimization

At BooStore.pro, images are optimized at the display architecture level:

• product lists do not load originals (2000x2000 px)
• for each product, reduced previews are auto-generated to the needed size
• each preview is cached separately and not recreated unnecessarily
• when an image changes, only the corresponding version is updated

💻 6. Maximum Use of HTML and CSS

Interactive elements are implemented primarily through standard HTML and CSS, without unnecessary scripts:

Examples — HTML widgets demo →

⚡ 7. Full Caching Without Memcache

One of the key principles of BooStore.pro — complete rejection of memcache.

📅 Smart Cache Invalidation via Change Dates

BooStore.pro uses point-specific update logic:

• each data type has its own update date
• each cache block contains a creation date
• on access, dates are compared — if no changes, the ready version is used

This avoids unnecessary recalculations and maintains instant speed even with hundreds of thousands of products.

📦 8. Rejection of Heavy Libraries

A fundamental architectural point of BooStore.pro — rejection of heavy libraries like jQuery UI.

🔧 9. JS and CSS Merging and Minification

🖇️ Custom JS and CSS Caching

BooStore.pro allows connecting custom scripts and styles through service blocks:

• each custom file has a timestamp
• timestamp changes only on edit
• browser loads only the current version
• cache is not cleared unnecessarily

🔍 10. Instant Filtering with Hundreds of Thousands of Products

Filtering is the most challenging scenario for e-commerce. At BooStore.pro:

• the first request may be slightly heavier
• the result is immediately cached
• subsequent requests execute in fractions of a second

Even with large catalogs, complex logical conditions, and high load.

Example of instant loading 5000 products via search filter — 👁️ See example →

📁 11. Caching Ad and Export Files

At BooStore.pro, all advertising and export data is cached: Google Merchant, Rozetka, Prom, Hotline, Epicentrk, Sitemap, and other external channels.

• A separate cached file is created for each channel
• Files update only on actual content changes on the site (products, prices, availability)
• This avoids server overload when generating large feed files, ensures up-to-date data for all advertising platforms, and maintains high site speed even with many exports

📨 12. Async Import Without Site Blocking

Import is one of the most dangerous operations for store stability. How it's implemented at BooStore.pro:

• import starts as a server-side async process
• the site remains accessible to visitors and the owner
• detailed status is displayed in the owner's browser
• re-import is impossible until the previous one completes

🖥️ 13. Server Environment as the Foundation of Speed

For maximum results, BooStore.pro recommends:

• LiteSpeed — one of the fastest modern web servers
• proper server-side caching
• optimal HTTP settings (HTTP/2, etc.)

⏱️ Freshness Control via Timestamps

Sometimes a server may serve an old file version due to caching. BooStore.pro solves this by:

• adding a last-modified timestamp to file requests
• server returns the current version, even if the old one remains in cache
• browser always gets the latest updated scripts, styles, and content

❓ Frequently Asked Questions