You paste a subdomain into your Minecraft client, hit Join Server, and about five seconds later you're standing in your world — even though, a minute ago, that server wasn't running at all. No "server is starting, try again later." No watching a loading bar on a control panel in another tab. You just join.
That five seconds is the whole product. It's the thing I'd want as a player, and it's the thing we've poured an absurd amount of engineering into making true every single time, not just on a good day. So let me actually open it up and show you how it works, because there's no single magic trick — there's one idea applied everywhere.
The idea is this: do the slow, time-consuming work ahead of time, so that the moment you click Join, there's almost nothing left to do. Generating a world, warming up a server, pulling files onto a machine — all of that is slow, so none of it happens while you're waiting. It already happened. You're just being handed the result.
Here's what that looks like, layer by layer.
A server tuned for speed
We don't run the plain Minecraft server jar. We run PaperMC, the community's high-performance server — already years of work shaving milliseconds off the game loop. That's our starting point, not our finish line. On top of Paper, we build our own server image and tune the Java runtime hard:
- A warm engine from the first second. Java gets faster as it runs: it watches your code and recompiles the hot parts into optimized machine code, but that warm-up takes time, and a freshly booted server is cold. We use a feature from the newest Java to do that warm-up once, when we build the image, and ship the result inside it. Your server boots already warmed up.
- Garbage-collection settings built for Minecraft. We use the well-known "Aikar's flags" — tuning that keeps the server from ever freezing for more than a couple milliseconds, so you don't feel a stutter mid-mine.
- Everything pre-processed at build time. Plugins, startup steps, file layout — anything Paper would normally do the first time it starts, we do once when we build the image and bake in the result. None of it happens on a startup you're waiting on.
Stacked together, these turn "boot a Minecraft server" from a chore you wait on into something that's effectively already done.
A proxy out front
Your Minecraft client never connects to your game server directly. It connects to Velocity, a proxy that sits at the front door of our whole system, and the proxy decides where you go. That one design choice buys us three things:
- Login happens away from the game server. Recognizing your subdomain, checking your access, routing you — that's all handled by the proxy in memory, in microseconds. Your game server doesn't even have to be awake for it.
- This is how joining a sleeping server feels instant. When you connect to a paused server, the proxy holds you on the loading screen, wakes the server, and the moment it reports ready, slides you straight in. It's not sitting there refreshing and re-checking — it gets told the instant the server is up. From your side it's one smooth connect.
- It's a shield. Because players only ever touch the proxy, your game server has no public address for anyone to attack. A flood of malicious traffic hits the hardened front door instead of the machine your world runs on, and one targeted server can never drag down anyone else's.
Warm machines, already waiting
Behind the proxy is the part that does the heavy lifting. Chunklink runs on Kubernetes, and our Minecraft servers are managed by Agones — a system built specifically for running game servers at scale, born out of work at Google and Ubisoft. It treats a Minecraft server as a real, managed thing with a proper lifecycle, not a process someone has to babysit.
The piece that makes wake-ups instant is a warm pool: we always keep a small fleet of fully-booted, idle servers sitting ready. When you join a sleeping server, we don't build a machine for you — we grab one that's already running, which takes milliseconds, and hand it your world. As servers get claimed, the pool quietly refills itself in the background.
On top of that, the software images every server needs are pre-loaded onto every machine, so nothing ever waits on a download. And for the one genuinely unavoidable bit of work — loading your specific world — we keep a copy on the machine's local SSD whenever we can, so re-joining a server you played yesterday usually skips even that.
Worlds made in advance
Here's the one I'm proudest of, because it's the clearest example of the whole philosophy.
Generating a Minecraft world is slow. Carving out terrain, caves, structures and biomes for a sizeable world can take minutes — easily the single slowest thing in the entire business. So we refuse to ever do it while you're waiting.
Instead, we pre-generate worlds before anyone asks for one. In the background, around the clock, the system is always building fresh worlds and keeping a stash of them ready to go. When you create a server, you're not kicking off a multi-minute generation job — you're being handed a world that was already finished and waiting. The expensive, time-consuming part happened long before you showed up.
And in the rare case you want something specific that isn't in the stash, we still don't make you wait: the server lets you in immediately and quietly fills in the rest of the world around you in the background. Either way, the slow work is pushed off the path between you and playing.
That's the tenet, stated plainly: anything slow gets done up front, on its own time, so it never lands on the moment that actually matters — the moment you hit Join.
We don't cut corners on hardware
The last piece ties it together, and it's a deliberate choice as much as a technical one.
Your server pauses when nobody's online. A few minutes after everyone logs off, we save the world and hand the machine back. You're not paying — in money or in wasted hardware — for a server idling overnight while you sleep.
That pause is what lets us be generous where it counts. Because we're not burning machines on empty servers around the clock, we can afford to give each active server genuinely fast processor cores and plenty of memory, instead of the thin, oversold slices a lot of cheap hosts hand out. A Minecraft server's smoothness lives and dies on raw core speed and not running out of memory — so that's exactly where we spend. We even double a server's processing power for its first moments of life, when it's loading up and needs it most.
The cheap way to run this would be to cram a pile of slow servers onto one box and hope they're never all busy at once. We went the other way: pause aggressively, and spend every bit of the savings on making the time you're actually playing feel great.
That's the whole thing. Do the slow work in advance, keep everything warm, and the moment you click Join there's almost nothing left to do but let you in. Could it ever take longer than five seconds? Once in a blue moon — and we treat those moments as bugs to hunt down, not as normal. The promise is the five seconds, and we've built every layer above to keep it.
The best part: none of this is a premium add-on or a setting you have to find. The warmed-up servers, the pre-generated worlds, the proxy out front, the fast cores and generous memory — they're on by default, for every server, on the single fair price. There's no "speed tier." Fast is the product.
So if you've never tried it, spin up a server and watch how little time passes between clicking Join and standing in your world. And if you already play with us — go start a fresh world tonight. Everything you just read is already working for you; you just don't have to think about it. That's rather the point.
Want to go deeper on any of this, or have a corner of the stack you'd like me to pull apart in a future post? Come say hi in our Discord — the door's open.