Glossary Entry
What is Redis?
What Redis actually means, buzzwords removed — with the example that makes it land.
The short answer
Put an in-memory store to work as an object cache and you have Redis, holding query results and computed values in RAM so they come back without being worked out again.
What follows: the longer explanation, a picture that holds, the practical stakes, and the places you will genuinely meet it.
By the Hosting & Domains team · Reviewed 18 August 2026
0
Jargon left undefined
100+
Entries, all cross-linked
Real
Working examples
Free
To read, always
Set up as WordPress's object cache, it answers repeat database questions out of memory. The pages that benefit are precisely the ones page caching has to skip: baskets, account areas, and the admin screens where the real work happens.
Beyond WordPress it runs sessions, queues and counters. For hosting the only real questions are whether it is present and how much effort connecting takes, and on our WordPress plans it is one click in AccelerateWP.
The everyday parallel
A colleague who has memorised every figure anybody has ever asked them to find. They walk to the records once per question, and every time it is asked again the answer comes straight back.
Carry that picture with you and most documentation on the topic loses its mystery on a first read.
Why it matters to a site owner
For shops and membership sites, Redis is routinely the largest gain left once page caching is in place. The difference is between a checkout interrogating the database hundreds of times and one that already holds most of what it needs.
That, incidentally, is the bar for any technical term — not 'could I lecture on it' but 'would I recognise it as the answer to my problem'. For this one, you now would.
How it turns up day to day
Dozens of option and meta lookups behind a WooCommerce category page come back from Redis in microseconds. Traffic to the database drops to a fraction of what it was, and wp-admin stops feeling like wading.
Entirely unremarkable once you have seen it — which is the point: most hosting ideas are plain machinery behind an intimidating label.
How Hosting & Domains deals with it
You will meet it in the control panel and now and then in a support thread, usually already set correctly. If this one landed, the natural follow-ups are Cache, Database, WooCommerce and OPcache.
A copy is taken daily on every plan, and putting a file or a database back is one click in the panel rather than a support ticket.
Unexplained jargon slows everybody down
An unexplained piece of jargon is, to us, a service defect. This is the support team's collected translations, published where a search engine can hand them over on our behalf.
Order an annual plan and the first year of the name's registration is on us.
- 100+ entries, plain English all the way
- Ordinary analogies, working examples
- Neighbouring ideas linked together
- Written by our own support engineers
Why Hosting & Domains
Standard on every plan
The next step, drawn out
Carry on into Cache and Database — ideas rarely travel alone, so the neighbours are linked in.
Jargon-free by design
Definitions written for people who run sites, not for other sysadmins — translation rather than restatement.
Clear about how deep to go
Most of these are recognise-level rather than operate-level, and every entry says which it is.
Stakes made explicit
More than what a thing is: the moments it turns out to be the answer to a problem you have.
Analogies that hold
Every concept comes with a mental model that returns exactly when you need it.
Cross-wired entries
Related terms point at each other, so one lookup compounds into working knowledge.
Quick Start
Order placed to site online
- 1
Find it in your own account
Open the control panel and find where this idea sits — a definition turns into understanding the moment it attaches to your own site.
- 2
Check the defaults as they stand
Look at how your account has it configured. Nine times in ten the default is right, and a check turns the guess into certainty.
- 3
Chase the neighbouring terms
Hosting terms travel in groups — Cache, Database and WooCommerce finish this one's picture, each a two-minute read away.
Built In
Fitted to every plan
- cPanel, which is what most of the industry already runs
- LiteSpeed caching in the server itself rather than bolted on by plugin
- No set-up charge at any point, and no joining fee
- People on the support desk every hour of every day
- WordPress Toolkit, with the updates seen to for you
- The name's first year included when you order annually
- WebP image optimisation built in, at no extra charge
- A renewal figure identical to the one you registered at
- Mailboxes that answer at the name you hold
- NVMe SSD storage on every tier, not only the dear ones
Frequently Asked
The questions that come up most
Is Redis only for shops, or do blogs gain too?
Where a blog's pages are already cached for logged-out readers, there is not much in it. Retail, memberships and a busy editorial team all carry heavy signed-in activity, and all of them notice at once. Switch it on as the uncacheable part of your site grows; on these plans that is a toggle rather than a project.
How do I know Redis is working?
Your object cache plugin shows the connection status and the hit rate, and keeping that rate above roughly 80 per cent means it is paying for itself. The unscientific version of the test is wp-admin, which usually feels better within a few minutes of it going live.
What is the uptime commitment, and what happens in a month that misses it?
99.9% — and if a month falls below that through a fault on our side, our terms entitle you to a pro-rated credit; ask and we apply it. Calling it a target rather than a contractual SLA is a deliberate choice. Hardware and network faults surface through platform monitoring, usually before the first customer notices.
What happens when I outgrow the plan?
You upgrade in place. Plan changes are made from the client area with no migration and no downtime, and the range runs from small shared accounts through VPS to full dedicated machines. Growth becomes a setting on the account rather than a search for a new host.
Keep reading
WooCommerce
WooCommerce is the open-source plugin that turns WordPress into a complete storefront — catalogue, basket, …
Cache
A cache keeps hold of work already done, returning finished pages, query results and assets straight from m…
Best Hosting With Redis Object Caching
The same call put as a buyer's guide: what to verify, what to ignore, and the plan we would sign.
VPS Hosting
KVM virtual servers — root access, DDoS filtering, one flat monthly figure.
Web Hosting
cPanel hosting on NVMe drives — SSL, the migration and year one of the name all included.
Changing hosts? Run through our checklist first.
A plain order of work for a move nobody visiting will notice: which files go over first, how to carry the mail across without losing a message, when exactly to repoint DNS, and the two mistakes behind nearly every outage we are asked to rescue.
Put the site on ground you own.
From a first website to a rack of machines, moving up is a change to the account rather than a migration.
View VPS Hosting plans