“NGINX cache on WordPress“ is one of the hottest search terms on the internet, but what does it mean? If you are wondering the same thing, you are in the right place!
In this comprehensive guide, we will cover everything you need to know about NGINX caching for WordPress, from understanding the basics to implementing advanced caching strategies using RunCloud’s intuitive server management platform.
Whether you run a high-traffic blog, an e-commerce store, or a business website, you’ll learn how NGINX caching can transform your site’s performance and user experience with minimal technical overhead.
Let’s get started!
What is NGINX?
NGINX is a powerful, open-source web server software that also functions as a reverse proxy, load balancer, and HTTP cache.
Over the years, NGINX has become one of the most popular web servers globally due to its event-driven, asynchronous architecture. Unlike traditional servers that create new processes for each request, NGINX uses an event-driven approach to handle multiple connections within a single process, which makes it exceptionally efficient and resource-friendly.
📖 Suggested read: Everything You Need To Know About WordPress Object Caching
What is NGINX Caching?
NGINX caching is a process where the server temporarily stores copies of server responses – such as HTML pages, images, and other media files in a dedicated storage space. When properly configured, NGINX cache intercepts requests to your WordPress site and serves cached copies of previously requested content.
Using a cache eliminates the need to process the same requests repeatedly through PHP and MySQL. This significantly reduces your server’s load and improves your visitors’ response times.
📖 Suggested read: How to Install & Set Up Ghost (NGINX and OpenLiteSpeed)
Additionally, caching helps maintain site stability during traffic spikes by serving cached content instead of generating new responses for each visitor. This improved performance also positively impacts SEO rankings, as search engines favor faster-loading websites.
There are multiple ways to implement Nginx caching on a WordPress website:
- FastCGI cache stores the results of PHP processing, making it ideal for WordPress sites as it caches the dynamic content generated by PHP scripts.
- Proxy cache stores responses from upstream servers, which is beneficial when NGINX acts as a reverse proxy.
- Microcache implements short-term caching (typically seconds or minutes) for frequently accessed content, while static file cache helps serve unchanging assets like images and CSS files more efficiently.
📖 Suggested read: How To Use Nginx FastCGI Cache (RunCache) To Speed Up Your WordPress Performance
How Does NGINX Caching for WordPress Work?
When NGINX cache is implemented for WordPress, it creates a sophisticated caching layer that intercepts and processes requests before they reach WordPress. When a user first requests a page, NGINX forwards the request to PHP-FPM to process the WordPress application.
The generated response is then stored in the cache (typically in memory or on disk) with a unique key based on factors such as the URL and query parameters. NGINX then checks all subsequent requests for the same content to see if a valid cached version exists. If found and not expired, NGINX serves the cached content directly, bypassing WordPress completely.
The caching process can be implemented using careful configuration of cache zones, keys, and invalidation rules to ensure optimal performance while maintaining content freshness. The cache can be selectively bypassed for dynamic content such as shopping carts or user-specific pages to serve time-sensitive and private content.
📖 Suggested read: Which is Better: Redis Full-Page Cache or NGINX FastCGI Caching?
How to Use NGINX Cache for WordPress Websites
Installing and enabling Nginx Caching on WordPress websites is quick and simple. Follow the steps below to get started:
- Log in to your RunCloud dashboard and select your WordPress application from the main dashboard interface. Once inside your application dashboard, navigate to the left-side menu panel, where you’ll find the ‘RunCloud Hub’ option.
- When you open the RunCloud Hub for the first time, you’ll be greeted with an “Introducing RunCloud Hub” screen. Click on the ‘Let’s Get Started’ button to initiate the caching setup process for your WordPress site.
- On the next screen, you’ll see different options for configuring your Nginx cache. Select the ‘FastCGI Proxy’ caching option and mark the checkbox to acknowledge your agreement with RunCloud’s terms and conditions. After this, you can click on the ‘Install RunCloud Hub’ button to activate the caching service on your website.
- On the next screen, you can edit and modify several configuration options:
- For the NGINX Page Caching Method, you can choose between FastCGI/Proxy Page Caching or Redis Full-Page Caching – FastCGI is generally recommended for most WordPress installations due to its efficient performance characteristics.
- When selecting the Cache Folder Type, you can choose between Disk (/var/cache/nginx-rc) for standard storage or RAMDisk (/var/run) for enhanced performance. You should consider your server’s resources when making this decision.
- After this, you can set an appropriate Cache Lifespan in minutes based on how frequently your content updates and establish a Cache Folder Size Limit in MB according to your available server resources and traffic patterns.
After making changes, click the ‘Update RunCache Settings’ button to ensure your new configuration is properly saved and implemented. Additionally, you can use the ‘Purge all cache’ option to clear both NGINX Page Cache and Redis Object Cache, particularly after making significant content updates or configuration changes.
📖 Suggested read: How To Create Custom NGINX Configuration Easily Using RunCloud
Wrapping Up: Who Should Use NGINX Cache on Their WordPress Websites?
NGINX caching is particularly valuable for WordPress websites with moderate to high traffic. It’s an excellent choice for business websites, e-commerce stores, membership sites, and content-heavy blogs that need consistent performance under varying load conditions.
Small personal blogs or low-traffic sites might not see dramatic benefits from NGINX caching, but implementing it early provides scalability for future growth and protection against unanticipated traffic spikes.
Implementing caching has benefits regardless of your website’s size. This is where RunCloud comes in.
Unlike traditional server management, which requires complex configuration and deep technical knowledge, RunCloud makes enterprise-level caching accessible to everyone through an intuitive dashboard interface.
Ready to supercharge your WordPress site? Sign up for RunCloud and enjoy:
- One-click NGINX FastCGI caching setup
- Built-in Redis object caching
- Visual cache configuration interface
- Automatic cache optimization
- Professional support team
Join thousands of WordPress developers and site owners who have discovered the simplest way to implement professional-grade web caching.
➡️ Start Your Free Trial of RunCloud
FAQs on NGINX Cache for WordPress
Do I need a cache plugin for WordPress?
With RunCloud’s built-in caching functionality for WordPress, you may not need an additional cache plugin for basic caching needs. However, advanced caching plugins can provide extra features such as minification, lazy loading, and CDN integration that complement server-level caching for enhanced performance.
Is NGINX faster than Apache for PHP?
NGINX sometimes performs better than Apache for PHP applications due to its event-driven architecture and efficient handling of concurrent connections, but the performance gains are minuscule.
What is the best NGINX cache?
FastCGI cache is generally considered one of the best caching solutions for NGINX with WordPress, as it directly caches the output of PHP processing. RunCloud implements this efficient caching mechanism by default, providing optimal performance for WordPress sites without requiring complex configuration.
What is the difference between Apache and NGINX?
NGINX uses an event-driven, asynchronous architecture that handles multiple connections within a single thread, while Apache uses a process-per-connection model.
Which cache plugin works best with Nginx?
RunCloud Hub is particularly well-suited for NGINX servers as it can integrate with NGINX’s FastCGI caching and provide additional optimization features.
Is Nginx suitable for high-traffic sites?
NGINX is exceptionally well-suited for high-traffic sites due to its event-driven architecture and efficient resource utilization. Its ability to handle thousands of concurrent connections with minimal resource overhead makes it an ideal choice for busy WordPress sites.
What is FastCGI cache?
FastCGI cache is an NGINX caching mechanism that stores the processed results of PHP scripts and effectively saves the complete output of WordPress pages. This eliminates the need to process PHP and query the database for repeated requests, significantly improving response times.
