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Version: 4.0.0-incubating

Load Balancing

BifroMQ applies different load-balancing mechanisms for client-facing services, internal RPC services, and stateful storage services.

Client-Facing Services​

Purpose:
Distribute external MQTT and API traffic across multiple nodes to improve availability and absorb load variations.

Approach:

  • Use standard Layer 4 or Layer 7 load balancers in front of MQTT Server or API Server.
  • In controlled network environments, MQTT clients may use custom client-side balancing strategies.

Internal RPC Services​

Purpose:
Balance internal request routing for subscription processing, inbox dispatching, and retained-message operations.

Approach:

  • Use BifroMQ’s traffic governance interfaces to inspect service topology, define routing rules, and direct RPC traffic.

Stateful Service Clusters​

Purpose:
Distribute sharded storage and compute workloads for dynamic subscriptions, offline messages, and retained messages.

Approach:

  • The storage layer manages shard placement, leader roles, and adaptive load distribution automatically.
  • Landscape-level APIs provide visibility into shard layout and replica distribution.