QuantumCache vs SpinupWP

QuantumCache accelerates WordPress by caching database query results and content fragments used to build pages. Instead of caching entire HTML pages, it reduces the database work required to render pages while preserving WordPress’s native invalidation behavior. It is not an output buffer or page cache, and it does not replace existing page caching solutions. Features Caches the results of the main front-end WP_Query for anonymous requests. Tag-based invalidation: purge by post ID, post type, or taxonomy. Fragment caching for the_content (classic) and core blocks such as core/post-content, core/latest-posts, core/archives, and core/navigation. Multiple storage modes: Auto – use Redis if available, otherwise fall back to MySQL. Redis – fastest mode; uses the PHP Redis extension. MySQL – portable fallback using compact tables (qc_entries, qc_tagmap). Compatible with the Redis Object Cache drop-in. Avoids wp_options and postmeta storage – all cache data is stored in Redis or QuantumCache-owned database tables. Multisite-aware: per-site prefixes and per-site tables. WP-CLI commands: wp quantumcache flush and wp quantumcache status. Metrics data layer: persistent hit, miss, store, and purge event counters available via Metrics::totals() and Metrics::deltas(). Performance summary In benchmarks on a plugin-heavy WordPress site (WooCommerce + Yoast SEO), QuantumCache reduced per-request database queries by up to ~99% on cached pages and achieved cache hit rates exceeding 97% with Redis. In the benchmark environment: Redis mode reduced warm TTFB by roughly 23–27% and total response time by 18–21% versus an uncached baseline. MySQL fallback mode delivered modest improvements (~3–10%) when Redis was unavailable. Actual results depend on theme complexity, plugin load, database topology, and traffic patterns. When to use QuantumCache QuantumCache is useful when: Your site already uses a page cache (such as a CDN, reverse proxy, or caching plugin) but WordPress still performs significant database work. You want faster response times without relying solely on full-page caching. Your hosting environment supports Redis, or you want a portable MySQL fallback. QuantumCache complements page caching rather than replacing it. What QuantumCache does NOT do QuantumCache is not a page cache or full HTML cache. It does not replace solutions such as: * CDN caching * reverse proxy caches * traditional WordPress page caching plugins Instead, QuantumCache reduces the database work required to build pages, making those systems more effective. Debug headers (optional) Enable Settings → QuantumCache → Send X-QC debug headers to view cache status in HTTP responses: * X-QC-Main: HIT | MISS | STORE * X-QC-Store: AUTO | redis | mysql * X-QC-Hydrated: number of posts loaded from cache Append ?qc_nocache=1 to any URL to bypass caching for that request. Debug headers are sent only when explicitly enabled in settings and contain no personal or user-specific data. WP-CLI commands QuantumCache provides the following WP-CLI commands: wp quantumcache status Shows the active backend, storage mode, and lifetime cache counters. wp quantumcache flush Clears all cache entries for the current site. Use –yes to skip the confirmation prompt. QuantumCache Pro QuantumCache Pro extends the core engine with advanced caching capabilities for WooCommerce and logged-in users. See: https://quantumcache.io Privacy QuantumCache does not collect, send, or log personal data. It stores cache entries in Redis or its own MySQL tables. Other plugins on your site may handle cookies or data independently. No remote requests are made, and no data is transmitted to external servers.

This plugin ensures that the SpinupWP page cache is cleared when your site’s content changes. Not using SpinupWP yet? Sign up here. SpinupWP is a modern server control panel that’s here to help you implement best practices for every server you spin up. Designed for WordPress. This companion plugin should be installed on sites created using SpinupWP to allow the page cache to be cleared when your site’s content changes. Not using SpinupWP yet? Sign up here. Any Provider We support DigitalOcean, Linode, AWS, and any other provider. If your server has an IP address, you can connect SpinupWP. It does need to be a fresh install of Ubuntu though. Latest & Greatest Software SpinupWP will install the latest stable versions of Nginx, PHP, MySQL/MariaDB, and Redis from the standard apt-get repos. No who-knows-what-they-did custom builds of packages. Disconnect from SpinupWP in the future and you can still keep your packages up-to-date with apt-get upgrade. Automatic Security Updates SpinupWP will configure your server to install security updates as soon as they are available to reduce the likelihood of a software vulnerability putting your server at risk. Free SSL/TLS Certificates Serving your site over HTTPS is essential these days, not only for security, but to take advantage of the performance improvements of HTTP/2 as well. When you add a site to SpinupWP, a free Let’s Encrypt SSL/TLS certificate will be acquired, installed, and configured for your site. And SpinupWP will handle certificate renewals as well, so you hardly need to think about certificates. Cache All the Things One of the keys to a great performing WordPress site is caching. All sites are set up with Redis object caching to greatly reduce database requests. And with the check of a box you can enable full-page caching to serve pages lightning fast without even hitting PHP. Git Push-to-Deploy Developers! Developers! Developers! Add a git repository to your SpinupWP site and simply push to master to deploy your code. GitHub, Bitbucket, or a custom git repo will work. You can also configure a build script to run some tasks on the server after deployment is complete. Error Logs WordPress doesn’t enable error logging by default. Probably because the log is saved to a publicly accessible directory and can quickly balloon to take up a lot of hard drive space. SpinupWP enables error logs by default but stores them in a safe place and makes sure they’re rotated regularly like other server logs. Security Security Security Each server provisioned by SpinupWP is security-hardened from the word go. SSH login is disabled for the root user (you login with your user and use sudo instead). The firewall only allows connections to Nginx and SSH and failed attempts are monitored and blocked when the reach a threshold. Nginx is configured to defend against XSS, clickjacking, MIME sniffing, and other attacks. Software security updates are installed automatically. Scheduled Posts Published on Schedule For every site you add via SpinupWP, a server-side cron job will be configured to make sure that your WordPress site’s cron is executed every minute, as it should be. WP-CLI Preloaded If you love WP-CLI (we do! ❤) you’ll be very pleased to find it available on the command line the first time you login to your server. Security Isolation for Sites For each site that you add to your server via SpinupWP, a new system user is created for that site. All site files are owned by the site user and a PHP-FPM pool is configured to run as that user as well. Each site only has access to its files and so if only one site has a security vulnerability and gets infected with malware for example, only the files for that one site can be infected. SFTP Access for Your Clients If you’re hosting a site for someone else, you can easily give them SFTP/SSH access to just that site. And because of the security isolation between sites, they will only have access to files for that site. Professional Guidance & Best Practices SpinupWP will actively point you in the right direction and offer suggestions for maintaining your server. And because it provides detailed feedback about the operations it runs on your server, you can learn what is happening with your server. New release of Ubuntu just came out, should I upgrade? We’ll add a notice to the app about that, why we don’t recommend upgrading your existing servers, and how you can spin up a new server with the new release of Ubuntu and migrate your sites to that server instead. Should I install Varnish to improve page caching performance? We’ve benchmarked Varnish and Nginx FastCGI Cache performed better. Varnish would add complexity too, so one less moving part is another reason. Much of the time SpinupWP will suggest things that you may not have even thought of. Email deliverability for example. SpinupWP will strongly encourage you to configure an email sending plugin for the best email deliverability. SpinupWP’s guidance is especially helpful for those new to managing a server, but can also help those who’ve been at it a while, providing transparency to our decisions. Scheduled Backups of Site Files & Database All server providers (DigitalOcean, Linode, etc) offer automated backups of your entire server for a fee. These services are great and we highly recommend having backups of your whole server. But what happens if some media or data was deleted by accident from your WordPress site? You’re not going to restore your entire server just to get that data back. That’s where site backups come in. Site backups are full backups of your site files (media, themes, and plugins) and database. They allow you to easily restore a single site or just some files or data from a single site. With SpinupWP’s site backups, you choose your preferred provider to stash your backups whether that’s Amazon S3, DigitalOcean Spaces, or Google Cloud Storage. You plug in your account details and SpinupWP will send your site backups there in an easy-to-see format. Teamwork Makes the Dream Work Create a new team account, invite a member of your team, and allow them to spin up their own servers. Or just only allow them to add sites, the permissions you give them is up to you. Features Page cache purging Persistent object caching Ensures debug.log files aren’t saved in a publicly-accessible location