oha

oha 1.14.0, published by hatoo, is a lightweight HTTP load generator written in Rust that combines the simplicity of rakyll/hey with an animated terminal-user interface powered by ratatui and tokio’s asynchronous runtime. Designed for developers and DevOps engineers who need rapid, visual feedback while stressing web endpoints, the tool continuously dispatches configurable request floods and updates an in-dashboard histogram, latency percentile table, and throughput graph in real time. Typical use cases range from ad-hoc benchmarking of REST, GraphQL, or gRPC gateways during CI staging, to quick smoke tests against cloud functions and CDN nodes before production cut-over; the compact single-binary design also fits containerized sidecars and remote SSH sessions where GUI utilities are impractical. Since its first appearance, the project has iterated through sixteen numbered releases, incrementally adding HTTP/2 support, custom header injection, dynamic query parameter substitution, and optional latency correction for clock drift, all while preserving the original goal of remaining a tiny, dependency-minimal executable. Occupying the performance-testing segment of the development toolkit, oha allows specifying method, body payload, concurrency level, and total request count via straightforward flags, after which it compiles an easily shareable plaintext summary and optional JSON export for later analysis. oha is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.

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