---
title: "Homepage – FrostyCache"
language: "en-GB"
canonical_url: "https://frostycache.com/homepage/"
source_url: "https://frostycache.com/homepage/"
content_type: "text/markdown"
---

REST API Caching Plugin for WordPress

# Your REST API,
14ms fast.

FrostyAPI serves cached REST API responses before WordPress even boots.
No database. No PHP overhead. Just frozen JSON, straight from disk.

See Pricing

Learn More


    ~14ms
    Avg. Response


    10-15x
    Faster Than Uncached


    18+
    Hooks & Filters






    GET /wp-json/wp/v2/posts


    HTTP/1.1 200 OK
    Content-Type: application/json; charset=UTF-8
    X-FrostAPI-Cache: HIT
    X-FrostAPI-Time: 14ms
    ETag: “a1b2c3d4e5f6”
    Cache-Control: public, max-age=3600
    // WordPress never loaded. Served from frozen cache.


---

Architecture

## Skips the database entirely.

FrostyAPI intercepts REST API requests at the advanced-cache stage, before WordPress initializes plugins, themes, or the database connection. Cached responses are served as flat files in under 14ms.

  Request Lifecycle




      1

        Incoming REST API Request
        GET /wp-json/wp/v2/posts




    ↓



      2

        Advanced Cache Intercept
        Before plugins, themes, or DB load




    ↓





        Cache HIT
        Serve from disk
        ~14ms response



        Cache MISS
        Pass to WordPress
        Cache response for next time




    ↓



      4

        ETag Validation
        304 Not Modified if unchanged




⚡

#### Pre-Database Serving

Cached responses are served from flat files before WordPress connects to the database, eliminating all PHP and MySQL overhead.

🔄

#### Automatic Cache Building

On cache miss, FrostyAPI passes the request to WordPress normally, then caches the response automatically for subsequent requests.

⚙️

#### Smart Invalidation

Cache is automatically cleared when content changes. Post updates, WooCommerce product changes, and taxonomy edits trigger targeted invalidation.

☑️

#### ETag & 304 Responses

Generates ETags for every cached response. Clients with matching ETags receive a 304 Not Modified, saving bandwidth and improving performance.

---

Features

## Built for Headless WordPress.

Everything you need to make your REST API production-ready, with zero configuration required.

⚡

### Pre-Database Speed

Responses served from disk before WordPress loads. No database queries, no PHP overhead, just raw speed.

☑

### ETag Support

Automatic ETag generation and 304 Not Modified responses. Save bandwidth and give clients instant cache validation.

⚙

### Smart Invalidation

Cache clears automatically when content changes. Post updates, product edits, and taxonomy changes trigger targeted invalidation.

🔌

### 18+ Hooks & Filters

Full developer control with 18+ action hooks and filters. Customize cache duration, skip rules, headers, and invalidation logic.

🚫

### Logged-In Users Skipped

Authenticated requests, nonce-bearing queries, and user-specific endpoints are automatically bypassed. No stale data for logged-in users.

👁

### Cache Observability

Custom response headers (X-FrostAPI-Cache, X-FrostAPI-Time) let you verify caching is working from any HTTP client or browser DevTools.

---

Compatibility

## Works with your eCommerce stack.

FrostyAPI includes built-in modules for popular eCommerce and headless WordPress plugins, with smart skip rules for user-specific endpoints.

### WooCommerce

Product and category endpoints cached. Cart, checkout, and order endpoints automatically skipped for logged-in users.

Supported

### CoCart

Product catalog endpoints cached. Cart session endpoints automatically excluded to prevent serving stale cart data.

Supported

### FluentCart

Public product and storefront endpoints cached. Checkout flows and customer-specific data excluded automatically.

Supported

### Easy Digital Downloads

Download and product listing endpoints cached. Purchase, license, and customer session endpoints automatically bypassed.

Supported

---

Comparison

## There’s no competition at this layer.

Most REST API caching plugins store results in the database. FrostyAPI serves responses before WordPress even loads.

| Feature | FrostyAPI | WP REST Cache |
| --- | --- | --- |
| Cache Layer | advanced-cache (pre-DB) | WordPress Transients |
| Avg. Response Time | ~14ms | ~150-300ms |
| Database Required | ✓ No | ✗ Yes |
| ETag / 304 Support | ✓ | ✗ |
| WooCommerce Support | ✓ | ✓ |
| CoCart Support | ✓ | ✗ |
| Smart Invalidation | ✓ | ✓ |
| WP-CLI Commands | ✓ | ✗ |
| Developer Hooks | 18+ filters | Limited |
| Multisite Support | ✓ | ✗ |
| Admin UI Required | ✓ No | ✗ Yes |

---

For Developers

## Filters, CLI, no admin UI required.

FrostyAPI is built for developers who prefer code over clicks. Use filters to control every aspect of caching, or manage everything from the command line.





    functions.php


    // Custom cache duration per route
    add_filter( ‘frostapi_cache_age’, function( $duration, $request ) {
      if ( str_contains( $request->get_route(), ‘/products’ ) ) {
        return 7200; // 2 hours for products
      }
      return $duration;
    }, 10, 2 );
     
    // Skip caching for specific routes
    add_filter( ‘frostapi_skip_cache’, function( $skip, $request ) {
      if ( str_contains( $request->get_route(), ‘/private’ ) ) {
        return true;
      }
      return $skip;
    }, 10, 2 );


WP-CLI

`$ wp frostapi flush`

Purge the entire cache. All cached JSON files are deleted.

`$ wp frostapi clear-post 42`

Clear cache files associated with a specific post ID.

`$ wp frostapi status`

Show cache file count, total size, and cache directory path.

`$ wp frostapi cleanup`

Remove expired cache files based on their TTL settings.

---

## Ready to freeze your API?

Start serving your REST API responses in under 14ms. No configuration required, no admin UI to learn. Just install and go.

See Pricing