Hosting Terms
What is Redis?
What Redis really means, with the jargon taken out — plus the example that makes it obvious.
Straight answer first
Redis is an in-memory data store used as an object cache — holding query results and computed values in RAM so they can be handed straight back.
Below: the fuller explanation, a picture that makes it stick, why it matters in practice, and where you will actually run into it.
Written by the Hosting Seller staff · Checked 1 August 2026
0
Terms left unexplained
100+
Definitions, cross-linked
Real
Examples from real kit
Free
To read, naturally
As WordPress's object cache it answers repeated database questions from memory. That accelerates exactly the pages page caching has to leave alone: baskets, account areas and the admin screens where real work happens.
Elsewhere it handles sessions, queues and counters. On hosting, what matters is whether it is available and how easily you connect to it — here that is one click through AccelerateWP on our WordPress plans.
The everyday comparison
A shop assistant who remembers every price they have ever been asked to check. The stockroom gets one visit per question, and every repeat of that question is answered on the spot.
Keep that picture in mind and most of the documentation you will ever read on the subject stops being mysterious.
Why it matters if you run a site
For shops and membership sites, Redis is routinely the largest remaining speed gain once page caching is in place. It is the difference between a checkout that asks the database hundreds of questions and one that already knows most of the answers.
That is the test for any technical term, incidentally — not 'do I understand it fully' but 'do I know when it is the answer to my problem'. For this one, you now do.
What it looks like day to day
A WooCommerce category page's dozens of option and meta lookups come back from Redis in microseconds. The database sees a fraction of the traffic it used to, and wp-admin stops feeling like wading.
Perfectly ordinary once you have seen it, which is rather the point: most hosting concepts are simple machinery wearing an intimidating name.
The Hosting Seller angle
You will meet it in the control panel and occasionally in a support conversation, usually already set the right way. If this term made sense, the natural next reads are Cache, Database, WooCommerce and OPcache.
Backups run every day on every plan, and putting a file or a database back takes one click from the panel.
Why we bothered with a hundred definitions
Every confusing term in hosting turns into a support ticket sooner or later, so we defined the hundred most common ones properly, once, in the plain English we would use across the counter.
What you pay on day one is what you pay at renewal, so the year-two invoice holds no surprises worth opening early.
- 100+ terms, all in plain English
- Everyday comparisons and real examples
- Related concepts linked together
- Written by the people on the desk
Why Hosting Seller
On every plan, as standard
The next reads, mapped
Read on into Cache and Database — terms rarely stand alone, so the neighbours are linked.
Plain English first
Every term defined for people who run sites, not for other sysadmins — jargon translated rather than restated.
Honest about what to skip
Most terms are recognise-level rather than operate-level, and the glossary says which is which.
The stakes spelled out
Not only what it is, but when it turns out to be the answer to a problem you are having.
Pictures that stick
Each concept gets a comparison you will still remember at the moment you actually need it.
Linked, never siloed
Related terms cross-reference each other, so one lookup grows into a working understanding.
First Steps
From choosing to live
- 1
Find it in your own account
Open the control panel and find where this concept lives — seeing it attached to your own site is what turns a definition into understanding.
- 2
Check what the defaults are
Confirm how your account has this set. It is usually right by default here, and now you will know rather than guess.
- 3
Follow the terms next door
Concepts travel in packs — Cache, Database and WooCommerce finish this one's picture, and each is a two-minute read away.
In the Box
Packed with every plan
- Real people on the counter, every hour of every day
- Staging copies so changes get tested before they go live
- A domain free for year one when you order annually
- WebP image optimisation built in and costing nothing
- The renewal price printed on the tag matches the order price
- Mailboxes that carry your own domain name
- LiteSpeed caching running at the server, not bolted on by plugin
- WordPress Toolkit, with updates applied for you
- DDoS filtering handled out at the network edge
- A backup taken daily, with restores you run yourself
Across the Counter
The questions we get asked most
Is Redis only worth it for shops, or do blogs benefit too?
A blog whose pages are cached for logged-out readers barely notices. Anything with a lot of logged-in activity — shops, memberships, a busy editorial team — notices straight away. Turn it on as your dynamic surface grows; here it is a toggle rather than a project.
How do I check Redis is actually doing something?
The object cache plugin reports both the connection and the hit rate, and a hit rate holding above roughly 80 percent means it is earning its keep. The unscientific test is how wp-admin feels, which usually improves within minutes of enabling it.
What uptime do you commit to, and who is watching?
We commit to 99.9% uptime and watch it continuously. That figure is an operational target rather than a poster line, and the alerting behind it usually has an engineer on a problem before the first customer notices anything is wrong.
What if the site outgrows the plan I bought?
You move up 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 whole dedicated servers. Growing becomes a line change on your account rather than a hunt for a new host.
How do I pay, and does it bill again on its own?
Orders go through a secure checkout by credit or debit card, and the renewal is taken at the same price you first paid. Every invoice sits in the client area for you to read, and switching auto-renewal off is a toggle in your account rather than a phone call.
Can I bring a domain I already own?
Yes, and transfers in are routine. Unlock the name at your present registrar, collect the auth code, then start the transfer from your client area. Whatever registration time is left comes across with it, and DNS keeps answering the whole way through.
What happens to my files if I leave?
The site and the files stay yours. Pull a full backup from the panel whenever you like, before or during cancellation. Domains remain registered in your name for the term you paid for and can move to any registrar once the standard 60-day window has passed.
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