Momento's Rust Migration Boosted Throughput and Developer Confidence, Not Just Speed

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Infrastructure company Momento migrated services to Rust, finding that the primary benefit was not dramatic latency reduction but improved code safety and developer confidence. The strongly-typed system caught bugs at compile time that would have caused production failures in loosely-typed languages like Kotlin. Instance throughput increased significantly, reducing the need to scale by adding more cloud servers, which pleased finance teams. The team adopted Rust incrementally, starting with a small internal CLI tool and one performance-critical component, guided by an in-house Rust expert. The experience proved valuable enough that Momento later chose Rust for a workflow service where performance was not even a concern, citing code clarity and consistency.

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