QStorm

Client-side load testing tool for async message queue consumers (Kafka, PubSub, RabbitMQ, Pulsar).

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QStorm is a client-side load-testing tool for asynchronous message-queue consumers, supporting Google Cloud PubSub, Apache Kafka, RabbitMQ, and Apache Pulsar. It publishes messages at configurable, staged rates with template variables and reports accurate latency percentiles, running from a developer's machine or CI pipeline without deployment alongside the workers under test. It's aimed at backend engineers who need to load test async queue consumers the way tools like k6 test HTTP APIs.

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