At a glance
Redis Object Cache
A persistent object cache backend powered by Redis®¹. Supports Predis, PhpRedis, Relay, replication, sentinels, clustering and WP-CLI.
Plugin Check (PCP)
Plugin Check is a WordPress.org tool which provides checks to help plugins meet the directory requirements and follow various best practices.
Full Comparison
Technical Specs
| Metric | Redis Object Cache | Plugin Check (PCP) |
|---|---|---|
| Requires WP | 4.6+ | 6.3+ |
| Requires PHP | 7.2+ | 7.4+ |
| Tested up to WP | 7.0 | 7.0 |
| Plugin age | 12 yrs | 15 yrs |
Quick Verdict
Redis Object Cache is the clear winner for site owners focused on performance. It has 40x more installs than Plugin Check (PCP) and a 90% support resolution rate. Plugin Check (PCP) serves a different purpose entirely, it audits plugin code for directory standards. If you need to speed up your site with a Redis backend, choose Redis Object Cache. If you are a developer submitting a plugin to WordPress.org, use Plugin Check (PCP). They solve different problems.
Feature Comparison: Redis Object Cache vs Plugin Check (PCP)
| Feature | Redis Object Cache | Plugin Check (PCP) |
|---|---|---|
| Primary function | Persistent object cache backend using Redis | Code checker for WordPress plugin directory requirements |
| Supported backends | Predis, PhpRedis, Relay | Not applicable |
| Advanced Redis features | Replication, sentinels, clustering | Not applicable |
| WP-CLI integration | Built-in | Not applicable |
| Best practices checks | Not applicable | Accessibility, performance, security, plugin-best-practices |
| Directory submission checks | Not applicable | Yes, helps meet WordPress.org directory requirements |
| Testing focus | Object cache performance | Plugin code quality and standards |
Who Should Use Redis Object Cache
- Site owners running WooCommerce stores who need faster database queries, Redis Object Cache is trusted by 400K+ active installs for exactly this workload.
- Developers who want to choose between Predis and PhpRedis backends without switching plugins, Redis Object Cache supports both plus Relay.
- Teams managing multiple sites who value high reliability, 83% of reviewers gave it 5 stars, and 90% of support threads were resolved in the last 2 months.
Who Should Use Plugin Check (PCP)
- Plugin developers preparing a submission to WordPress.org who need to verify directory requirements, Plugin Check (PCP) is the official tool for this task.
- Developers who want automated accessibility checks built into their workflow, the plugin tags include accessibility as a core check category.
- Teams that need a quick way to audit existing plugins for security and performance best practices, 80% of reviewers gave it 5 stars, reflecting its usefulness for quality assurance.
Community & Support
Redis Object Cache shows strong community support. Over the last 2 months, it handled 10 support threads and resolved 9 of them, a 90% resolution rate. The rating distribution backs this up, 83% of all reviews are 5 stars, while only 11% are 1 star. Plugin Check (PCP) has a rating of 4.5 from 35 reviews, with 80% at 5 stars and 6% at 1 star.
Verdict: Redis Object Cache or Plugin Check (PCP) for WordPress sites?
Pick Redis Object Cache if your goal is site speed. It delivers a production-ready object cache backend with 40x more installs than Plugin Check (PCP) and a 90% support resolution rate. It handles Predis versus PhpRedis decisions, supports Redis Sentinel for high availability, and works with WP-CLI out of the box.
Pick Plugin Check (PCP) if you are a plugin developer who needs to check a WordPress plugin for directory requirements before submission. It is the official WordPress.org tool for auditing code against best practices, including accessibility and security checks. Use it during development, not on production sites.
These plugins do not compete. Redis Object Cache is a performance tool for any site. Plugin Check (PCP) is a code quality tool for developers. Choose the one that matches your immediate task.
This comparison is AI-generated from live WordPress.org data. Install counts, ratings, versions and support statistics sync weekly, so the numbers on this page stay current. Content passes automated quality checks before publishing, and pages below our quality threshold are held for human review.
Read our full methodologyFrequently Asked Questions
Q How many people use Redis Object Cache compared to Plugin Check (PCP)?
Redis Object Cache has 400K+ active installs while Plugin Check (PCP) has 10K+, meaning Redis Object Cache is used on more sites.
Q Which has better user ratings — Redis Object Cache or Plugin Check (PCP)?
Both plugins average 4.5/5 on WordPress.org — Redis Object Cache from 175 reviews and Plugin Check (PCP) from 35 reviews.
Q Which is more actively maintained — Redis Object Cache or Plugin Check (PCP)?
Plugin Check (PCP) was last updated on May 29, 2026 and Redis Object Cache on May 4, 2026, so Plugin Check (PCP) received the more recent update.
Q Are Redis Object Cache and Plugin Check (PCP) both free?
Yes — both Redis Object Cache and Plugin Check (PCP) are free to install from the official WordPress.org plugin directory. Some features may require a paid upgrade offered by the plugin author.
Q Is Redis Object Cache or Plugin Check (PCP) better for WordPress sites?
For a live site that needs faster database queries and page load times, Redis Object Cache is the clear winner. Plugin Check (PCP) is better only if your goal is to audit your code for security and best practices before launch. They solve completely different problems, so pick the one that matches your immediate need.
Q Which is easier to set up for a WordPress beginner — Redis Object Cache or Plugin Check (PCP)?
Plugin Check (PCP) is much easier for a beginner because you just install it and run a scan with a single click. Redis Object Cache requires you to have a Redis server already running on your host, which most beginners do not have configured. If your host does not support Redis out of the box, stick with PCP.
Q What is the biggest feature difference between Redis Object Cache and Plugin Check (PCP)?
Redis Object Cache is a performance tool that stores database queries in memory to speed up your site, while Plugin Check (PCP) is a testing tool that scans your plugins for security, accessibility, and coding standard issues. One makes your site faster, the other makes your code safer.
Q Can you switch from Redis Object Cache to Plugin Check (PCP) (or the other way) without losing data?
Yes, you can switch freely between them because they do not store any of your site's content or user data. Redis Object Cache only caches temporary query results that are automatically rebuilt, and Plugin Check (PCP) only reads your plugin files to generate a report. Uninstalling one will not affect the other's functionality.
Q Which type of site should choose Redis Object Cache, and which should choose Plugin Check (PCP)?
Choose Redis Object Cache if you run a high-traffic site, a WooCommerce store, or any site where slow database queries are hurting load times. Choose Plugin Check (PCP) if you are a developer or site owner who wants to verify that your plugins are secure and follow WordPress coding standards before going live.
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