Load balancer plans, limits and conditions
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A load balancer spreads visitor traffic across the servers you choose and keeps answering from one public address on your firewall. Every load balancer in your account uses the same plan. Small, Medium, and Large differ in hostnames, backends, and open connections — not in how many new visitors per second you can take. The portal shows the limits and the monthly price.
For the click path after you create one, see Load Balancer in Portal, listeners, and pools.
What is a load balancer?
A load balancer spreads visitor traffic across the servers you choose. It runs on your firewall, on both firewalls of the pair, and keeps answering from one public address while one firewall is updated.
You need a firewall with a public IP before you can create one.
Which plan should I pick?
Every load balancer in your account uses the same plan. The plan you pick for one applies to all of them.
| Plan | A good fit when you have |
|---|---|
| Small | A few sites, or one application on a handful of servers |
| Medium | Several applications, or one busy site |
| Large | Many hostnames and backends, or a service that keeps a lot of connections open |
The portal shows the limits and the monthly price for each plan when you create a load balancer. Those are the limits that apply to your account.
What do the limits mean?
- Gbit/s is the bandwidth of the load balancer.
- Conns is how many connections may be open at the same time. It is not a limit on new visitors per second.
- TB is the traffic included with the plan.
- Listeners is how many ports or hostnames you can publish.
- Servers is how many backends you can attach.
- Certificates is how many TLS certificates the load balancer can hold.
Can I use a different plan per load balancer?
No. All load balancers of your account share one plan. Change it on an existing load balancer, on the settings tab, to move all of them.
What happens when I change plan?
The firewalls are updated one at a time. Visitors see one short interruption of about 2 seconds. Open connections drop once. Clients that retry continue as normal.
If the firewall is already large enough for the new plan, there is no extra pause.
A smaller plan is refused until every load balancer fits it. Remove listeners, certificates or servers, or lower the connection limit, until the message clears. Then try again.
What do I pay?
The portal shows a monthly price for the plan. There is no minimum term. You can delete a load balancer at any time.
What is removed when I delete a load balancer?
Deletion starts immediately. There is no grace period.
The load balancer configuration and its certificate files are removed from the firewall. Its settings and certificates are removed from the platform.
Your firewall, its filtering and its NAT stay. The Let’s Encrypt account on your Worldstream account stays. Access logs on the firewall age out on the normal log rotation.
Who is responsible for visitor data?
The load balancer can log visitor traffic on the firewall. Worldstream processes that visitor data as processor. You are the controller.
Worldstream remains the controller for its own account data, such as the contact address on the Let’s Encrypt account.