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Temporal logoTemporal · Feature trail

Ruby SDK

1 post · Mar 2025 – Oct 2025

What this trail covers

The Temporal Ruby SDK is now Generally Available (GA), offering developers a native Ruby experience for authoring durable workflows and activities. It leverages the Rust Core SDK for shared logic and provides advanced features like durable fiber scheduling and robust error handling. The SDK supports core Temporal functionalities including Activities, Workflows, Signals, Updates, and Timers, with a focus on deterministic execution and crash-proof operation.

All Temporal trails
  1. Temporal Ruby — crash-proof fibersThis post announces the General Availability (GA) of the Temporal Ruby SDK. It details the SDK's architecture, highlighting the use of a Rust Core SDK bridged via Ruby C extensions (Magnus, rb-sys) for gRPC clients and worker state machines. A key technical contribution is the implementation of a durable fiber scheduler using Ruby's Fiber::Scheduler, ensuring deterministic execution for Workflows. The post also covers the integration of the Rust Core's asynchronous operations with Ruby's blocking I/O model using a single-use Ruby Queue and a dedicated reactor loop running on a separate thread to manage callbacks without holding the GVL. It provides code examples for implementing Activities and Workflows, and running a Worker, demonstrating features like durable timers, workflow cancellation, and updates.
  2. Replay 2025: New Temporal Capabilities for Faster DevelopmentAnnounces the pre-release availability of the Temporal Ruby SDK, enabling developers to author Workflows and Activities using the Ruby programming language. This SDK is at full feature parity with existing Temporal SDKs.