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Performance

WP Rocket Alternative: What a Caching Plugin Needs to Do

June 29, 2026·3 min. reading time

Most comparisons of caching plugins end with a score from a speed test. That's tempting and not very helpful: the score reflects a single measurement of a single request. These seven criteria hold up longer.

1. Can every toggle be switched individually?

The most important point, and the one mentioned least often. If something gets stuck after you switch things on, you need to be able to undo exactly one thing — not a bundle.

2. Does it say what it touches?

A plugin that offers “optimization” without naming what happens turns troubleshooting into guesswork. Kakapo Performance notes next to every toggle what it does — and where its limits are.

3. Can it handle images in modern formats?

On most sites, images are the biggest item. WebP and AVIF for every image size do more than any cache fine-tuning. Also check whether the existing Media Library can be converted retroactively.

4. Does it clean up the database — on a schedule?

Revisions, orphaned metadata, and expired transients grow quietly. Cleaning up once helps for six months; a schedule helps permanently.

5. Does it show what gets loaded at startup?

Autoload options are loaded on every request, even if nobody needs them. A plugin that counts the bytes per option instead of estimating them often finds more here than everything else combined.

Take a look at the autoload list once before you start tweaking the cache. A single forgotten option weighing several megabytes cancels out any cache optimization.

6. Does it support an object cache?

For logged-in areas and online stores, an object cache with Redis or Memcached does more than any page cache — because pages there mustn't be cached at all. Check whether the alternative can do this without an add-on plugin.

7. How does it handle multiple sites?

If you look after five sites, you want to see their status and clear caches without logging in five times. Ask how the remote management authenticates — with Kakapo Performance, it's WordPress application passwords, not an account with the vendor.

The criteria at a glance

CriterionQuestionIn Kakapo Performance
Individual togglesCan you undo one thing?yes, none is mandatory
TransparencyDoes it say what happens?yes, including limits
ImagesWebP and AVIF, retroactively too?yes, plus a batch run
DatabaseOn a schedule?yes
AutoloadCounted or estimated?counted in PHP
Object cacheWithout an add-on?Redis or Memcached
Multiple sitesHow does it authenticate?Application passwords

Frequently asked questions

Is my hosting provider's cache enough?
Often for anonymous requests, yes. What it usually can't do: convert images, maintain the database, and show autoload options. The two aren't mutually exclusive.
Do I need critical CSS?
It helps with perceived load time, but it's the most error-prone part. Switch it on last and check each template individually.
What about Core Web Vitals?
Layout shifts almost always come from images without dimensions and from late-loading fonts. Both can be fixed before you start tweaking the cache.
Can I go back if it doesn't work out?
Yes, as long as the plugin marks its .htaccess blocks and removes the cache files when it's deactivated. Check this before buying.

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