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WP Redis

By Pantheon Systems

Performance & Optimization / Caching Solutions

WP Redis Review - In-Depth Analysis

Enhance your WordPress site's performance by using Redis for object caching. Ideal for high-traffic sites.

Performance Overview

WPS Score

7.01/10

User Rating

4.7/5 (based on 20+ reviews)

Active Installations

9,000+

Update Frequency

Below Average It is calculated using the weighted average of same category plugins.

Security Score

1 / 10 (Very Low Risk) It is calculated using the weighted average of all versions.

What It Does

This plugin allows you to back your WordPress Object Cache with Redis, a high-performance in-memory storage backend. For sites concerned with high traffic, speed for logged-in users, or dynamic page loads, a high-speed and persistent object cache is essential.

Redis is an excellent solution for this purpose, and it can scale across multiple instances of your application. This plugin integrates seamlessly with Redis, making it suitable for any self-hosted WordPress site that has Redis installed.

It is crucial to use the object cache wisely to avoid performance issues. Keep the number of keys sensible, avoid storing large amounts of data on each key, and manage frontend writes and deletes effectively.

The plugin also includes various WP-CLI commands for managing Redis operations, allowing for easy debugging and configuration. You can enable WP Redis and check connection details through these commands.

Comparing to Alternatives

WP Redis is a straightforward Redis object cache plugin for WordPress, focusing on simplicity and performance without premium tiers. It compares closely with Redis Object Cache, another popular choice.

Top alternatives

Redis Object Cache ( WPS: 7.22)

Strengths

Open source and free with no premium upsells
Drop-in object cache implementation requiring minimal plugin activation
Lightweight and efficient, improving backend performance notably
Well maintained with clear GitHub instructions

Weaknesses

Installation requires manual steps, which can be complex for non-experts
Lacks automatic setup or configuration wizards
No premium support or advanced features available
Requires Redis server setup outside the plugin

User Sentiment Analysis

Users appreciate WP Redis for its performance and simplicity but note some challenges during installation.

Positive highlights

'Works great with significant backend performance gains' - FLORIAN PRACHE
'Well maintained, free, and open source' - strarsis
'Lightweight and does not need to remain installed' - mandrael
'Excellent plugin functionality once installed' - ejbt12
'Simple and effective Redis caching' - dashary

Common complaints

Installation is not straightforward and requires manual file copying
Lack of automatic setup or configuration guidance
Needs Redis server installed separately
No premium support or additional features

Weaknesses

Manual installation can be error-prone for beginners
No in-plugin interface for configuration or monitoring
Limited documentation on advanced setup
No premium version to address advanced needs

Who Should Use This?

Best for

Developers and site administrators comfortable with manual plugin installation and Redis server setup who want a lightweight, free Redis caching solution.

Not ideal for

Users seeking an easy, automated setup or those who prefer premium support and advanced features integrated within the plugin.

Pricing & Value

Free version includes

The free version provides a fully functional Redis object cache implementation with no restrictions or premium upsells, relying on manual setup and external Redis server installation.

Final Verdict

WP Redis is a solid, no-frills Redis caching plugin that delivers excellent performance improvements for WordPress sites when properly installed.

Its manual setup and lack of premium features make it best suited for users with technical expertise who want a free and lightweight caching solution.

Other Notable Features

Here are a few other notable features of this free WP Redis plugin.

Object Cache

Redis

Cache

FAQ

If you are concerned with the speed of your site, backing it with a high-performance, persistent object cache can have a huge impact. It takes load off your database, and is faster for loading all the data objects WordPress needs to run.

A page load with 2,000 Redis calls can be 2 full seconds of object cache transactions. If a plugin you’re using is erroneously creating a huge number of cache keys, you might be able to mitigate the problem by disabling cache persistency for the plugin’s group:

wp_cache_add_non_persistent_groups( array( 'bad-actor' ) );

This declaration means use of wp_cache_set( 'foo', 'bar', 'bad-actor' ); and wp_cache_get( 'foo', 'bad-actor' ); will not use Redis, and instead fall back to WordPress’ default runtime object cache.