[mfateev]

The short answer is that Temporal is a fork of Cadence by the original founders of the project. The Temporal fork also has a VC backed company behind it. The Temporal is still an open-source project under MIT License. We believe the success of the open source project is essential for the success of the company, so we are putting significant resources into its development.

We spent almost year working on various improvements before declaring the first production release. The most important technical difference is that Temporal uses gRPC/Protobuf when Cadence is TChannel/Thrift. One implication is that TChannel did not support any security and Temporal supports mTLS. We are currently working on a comprehensive security story.

Here is a stackoverflow post that has more details about this: https://stackoverflow.com/questions/61157400/temporal-workfl....

[manca]

Awesome! What's the plan for Cadence? Do you plan to maintain both projects moving forward or you'll start shifting community to Temporal and deprecate Cadence?

I ask because internally we just deployed our first Cadence cluster a few weeks ago -- it'd be good to know what to expect and what the founders of the project suggest to do now that Temporal is officially released to production?

[rytemporal]

So the short answer is that we love Cadence but it is no longer our project. Uber team has full control and we are not part of Uber basically. Keep in mind Cadence is a project for Uber first and foremost. But Cadence and the team are super great.

The long answer is that we see Cadence as a great part of our lineage. We felt that our vision for the open-source of Temporal was much different than what Uber sees for the project.

Now that we have a production grade release, we are slowly phasing out Cadence support. We will still provide free support to any Cadence users who need help migrating to Temporal.

I can’t speak to your situation without knowing more. I will say if you would ever like a hosted version of this tech, Temporal is the way to go. I am happy to answer any specific questions too!

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