Load notes · Vienna
Vienna hosting for the ten minutes that matter
A programme goes live, a mailing goes out, and a term's worth of traffic arrives at once. Everything on this page is about that window.
The short answer
A congress site is not slow on an average Tuesday; it is slow in the ten minutes after the programme drops. The thing that decides whether it holds is what proportion of that burst can be answered from cache, because a cached response never touches PHP or the database and a registration form always does.
So the work splits cleanly. Get every session, speaker and venue page served from the LiteSpeed cache inside the server, keep the registration path as short and as uncacheable-by-design as it needs to be, and rehearse the whole thing on a staging copy rather than on delegates.
By the HostingFast team · Reviewed 12 August 2026
NVMe
Storage on every tier
Free
Domain, first year
99.9%
Availability target
Flat
Renewal, unchanged
United Nations agencies and international organisations in one district, the congress and conference trade filling the hotels, and a Mittelstand of specialist manufacturers in the provinces around the city. A lot of that trade lives or dies on a publication date.
This page is written for the burst rather than the average. What to cache and what you cannot, how the registration hand-off behaves under load, what the London origin costs a visitor in Austria, and how to prove the site copes before the mailing goes out.
Cached traffic is not the same shape as uncached traffic
A cached page is a file handed to a visitor. Ten thousand people asking for the same session listing in the same minute is ten thousand reads of one prepared response, and the server barely notices. The same ten thousand people hitting a page that rebuilds itself per request is ten thousand PHP executions and ten thousand rounds of database work, and something will give.
So the honest capacity question is not how much traffic the plan takes; it is how much of your traffic is answerable from cache. Load a programme page in a private window and check the response headers report a cache hit. If they do not, find out what is preventing it — a session cookie set site-wide is the usual culprit — before you buy anything larger.
The registration path is the part that cannot be cached
Registration is a POST, and it reaches the origin every time by definition. Keep it to as few uncacheable requests as it genuinely needs, hand it off cleanly to whatever ticketing system actually takes the money, and give the confirmation screen its own URL so you can tell whether anybody ever arrives at it.
Send the confirmation mail through the platform's outbound mail rather than the theme's default mailer. MailChannels handles delivery on every plan here, which matters more on this workload than it sounds: a registration that succeeds silently and never reaches the delegate is indistinguishable from a registration that failed.
Rehearse it on a copy, not on delegates
Staging is the whole answer to this class of problem. Clone the live site, apply the changes — the new programme template, the plugin the committee wants, the ticketing embed — and measure the same URLs on the copy with the same tool before anything reaches the public site.
Daily backups sit behind that as the second net, restorable from the panel in minutes rather than through a ticket queue. The rule of thumb worth adopting: never change a template in the week a mailing goes out, and if you must, change one thing at a time so the measurement afterwards means something.
Austria, London and .at
Austria falls inside the Western and Northern Europe band we publish for the London origin, 10 to 35 milliseconds of round trip. On a cached programme page that distance is crossed once and is beneath notice; on a registration flow that makes several uncached round trips, it is worth counting properly.
The .at goes on the same account as the hosting, first year free on qualifying annual plans, with DNS aimed correctly before you ask and the certificate issued as the name connects. One renewal date, one place to look when something needs changing at short notice.
What holds the burst up
LiteSpeed caching is built into the server rather than added by plugin, so a prepared programme page is served without PHP running at all.
Staging copies, daily restores you run yourself, and in-place tier upgrades mean the response to a busy season is an account setting rather than a migration.
- Server-level caching, so a burst reads one prepared page
- Staging copies to rehearse before the mailing goes out
- In-place tier upgrades with no migration involved
- .at registered and renewed on the hosting account
Why HostingFast
Standard on every plan
Bursts answered from cache
A LiteSpeed cache inside the server turns ten thousand simultaneous requests for one programme page into ten thousand file reads.
A rehearsal environment
Staging copies let a new template or a ticketing embed be measured on a duplicate before any delegate meets it.
Outbound mail that lands
Confirmations go through MailChannels rather than the theme's default mailer, so a successful registration reaches the person who made it.
Growth as an account change
Move up a shared tier in place when the season demands it — the account is upgraded, not migrated, so nothing moves address.
Restores in minutes
Daily backups restored from your own panel, files or databases, without joining a support queue at the worst possible moment.
Uptime stated as a figure
A 99.9% target under constant monitoring, with a pro-rated credit on the account if a month falls short through a fault on our side.
Quick Start
From order to online
- 1
Confirm the cache is engaged
Load a session page in a private window and check the response headers report a hit. If they do not, find what is preventing it before buying capacity.
- 2
Rehearse the drop on staging
Clone the site, apply the template and the ticketing embed, measure the same URLs, and push only when the numbers hold.
- 3
Publish, then read the figures
Watch first byte and the confirmation-page arrivals through the burst, and keep the record so next year's decision has evidence behind it.
Built In
Loaded onto every plan
- LiteSpeed caching inside the server rather than added by plugin
- Staging copies for rehearsing a change before it ships
- MailChannels handling outbound mail on every plan
- Daily backups with self-service restores from the panel
- In-place tier upgrades, with no migration when you change plan
- Per-site PHP version switching from the control panel
- WordPress Toolkit on board, with updates handled for you
- Free SSL on every plan, reissued before it can lapse
- Zero setup charges, so a seasonal upgrade costs only the tier
- Human support on duty at every hour a congress actually runs
Frequently Asked
What people ask us most often
The programme goes live at nine and the mailing at half past. What breaks first?
Whatever is not cached. If the session listing rebuilds per request, PHP and the database are the first to fold and the site slows for everyone including the people trying to register. Check the cache is serving those pages days beforehand, not on the morning, because the fix is usually a stray cookie or an exclusion rule rather than more hardware.
Can we simulate the load without hurting the live site?
Rehearse the change on staging rather than the load itself. A synthetic flood against a shared platform is antisocial and tells you little, whereas cloning the site, applying the new template and measuring the same pages tells you exactly what your own change cost. If the concern is genuinely concurrency rather than code, that is a conversation to have with support before the date, not after.
Registration is handled by a separate ticketing provider. Where does our responsibility end?
At the hand-off, and it is worth being precise about where that is. Everything up to the button — programme, speakers, venue, travel — is yours and should be cached. The moment the delegate lands on the provider's domain, their infrastructure carries it. Give the return URL its own page on your site so you can measure how many people actually complete the loop.
Do you offer support in German?
Support works in English at every hour, in plain terms, with a first reply inside two hours and inside one when a site is down. The control panel behaves identically whichever language you think in, and on a workload like this the thing that matters at two in the morning is whether somebody competent replies, not which language they reply in.
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Be cached before the mailing goes.
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