[wittydeveloper]

It is actually comparable to both.

We aim to provide a similar feature set as Sidekiq (throttling, unique jobs) but with a complete hosted solution.

While Defer and Temporal can both be used for writing background jobs, workflows, and CRONs, there are some core design differences.

Temporal has been created as the Kubernetes of highly distributed systems, enabling developers to write code that runs on multiple regions without worrying about possible termination of the program and interruption of workflows spanning across multiple steps.

While Temporal can be used for background jobs, workflows, and CRONs, its main goal is to ensure that highly distributed tasks will reliably be executed. That's the main reason why Temporal API is so verbose, with many concepts to deal with.

Defer, on the other hand, provides comparable reliability while focusing on the developer experience.

You can write workflows, CRONs, and jobs that run for hours without worrying about them being terminated.

All this, with a simple API that enables you to write some workflows (background functions calling other background functions) in plain TypeScript, with no mental model to fit in.