This article presents a hands-on approach to chaos engineering by using Toxiproxy to test the resilience of an SMS gateway service. The author details how to set up Toxiproxy to simulate network latency, timeouts, and rate limiting, then validates that the system's fallback mechanisms (e.g., retry logic, circuit breakers) work correctly. The piece emphasizes the importance of running such experiments only in non-production environments and includes clear safety warnings. For engineering teams building or maintaining communication services, this is a valuable reference for ensuring robustness against real-world failures. The methodology can be extended to other critical infrastructure components.
A practical guide to using Toxiproxy for fault injection on SMS gateways, focusing on timeout and rate-limit resilience testing.