Can Java Microservices Be As Fast As Go? A 2026 Benchmark Update

Six years after first comparing Java and Go microservices, the authors revisit the performance question: whether carefully implemented Java and Go HTTP services still deliver similar results on modern runtimes and hardware. Rather than framing it as a language competition, the 2026 article examines how each performs as payload sizes and concurrency increase, with all code, benchmarks, and results available in a companion repository.