Scaling Strategy

Horizontal scaling, event streaming, and load management patterns for high-throughput systems

Horizontal patterns

  • Stateless services: scale out behind load balancers; autoscale on request rate and CPU.
  • Stateful services: shard by business key (instrument/account); leader/follower for reads.

Event streaming

  • Partition topics by natural shard key; ensure partitions match throughput.
  • Consumers bind to partitions and scale with lag metrics.

Load Management

  • Bounded queues, circuit-breakers, and prioritized handling for overload.
  • Co-locate processing for a shard to minimize cross-shard coordination.