Technology Encyclopedia Home >How to load balance game servers?

How to load balance game servers?

Load balancing game servers is essential to distribute player traffic evenly, ensure high availability, and maintain low latency. It prevents any single server from becoming overloaded, which could lead to lag or crashes. Here’s how it works and an example:

How Load Balancing Works for Game Servers

  1. Traffic Distribution: A load balancer acts as a middleman between players and game servers, routing incoming requests to the least busy server.
  2. Health Checks: The balancer continuously monitors server health (e.g., CPU usage, latency) and redirects traffic away from unhealthy servers.
  3. Scalability: During peak times, additional servers can be added dynamically, and the balancer routes traffic to them seamlessly.
  4. Session Persistence: For games requiring persistent sessions (e.g., MMOs), the balancer ensures players stay connected to the same server unless necessary.

Example

A multiplayer FPS game has 3 game servers (Server A, B, C). A load balancer receives player connections and distributes them based on current server loads. If Server A reaches 90% capacity, new players are routed to Server B or C. If Server B fails, the balancer stops sending traffic to it and redistributes its players to A and C.

Recommended Cloud Solution

For scalable and reliable game server load balancing, consider using Tencent Cloud’s Load Balancer (CLB). It supports:

  • High-performance traffic distribution with low latency.
  • Health checks to automatically remove faulty servers.
  • Auto-scaling integration to handle traffic spikes.
  • Global acceleration for players across regions.

This ensures a smooth gaming experience even during high traffic or server failures.