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CLOUD INFRA3 min readGakk Engineering

Carrier-grade SMPP message routing: lessons from 2.4B events

How modern microservices, Kafka pipelines, and Redis clusters overcome the bottlenecks of traditional SMSCs.

Carrier-grade SMPP message routing: lessons from 2.4B events

Routing billions of SMPP events a month is a back-pressure problem, not a bandwidth problem.

  • Keep bind sessions warm and pooled.
  • Push every PDU through Kafka so a slow SMSC never blocks a fast one.
  • Use Redis for throttling windows and delivery-receipt correlation.

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