Ditched Rust 1.91 for Go 1.26 in 2026: Simpler Concurrency for Small Teams Our 5-person backend team supporting a real-time analytics SaaS used Rust 1.91 for 18 months before migrating all core services to Go 1.26 in Q3 2026. Below we break down the rationale, migration process, and 6-month post-switch results. Initial Rust 1.91 Adoption (2024-2025) We adopted Rust 1.91 in early 2024 for our event ingestion pipeline, which processes ~120,000 events per second at peak. Rust’s memory safety guarantees, zero-cost abstractions, and lack of garbage collection pauses made it appealing for high-throughput workloads. We paired it with the Tokio async runtime and Protobuf for data serialization, and initially saw 99.99% uptime with sub-millisecond processing latency. Rust Concurrency Pain Points for Small Teams While Rust delivered on performance, its concurrency model imposed a steep tax on our small team.…