# Caldera Spark Retrospective: 5000 rollups launched

By [Caldera](https://paragraph.com/@caldera) · 2023-04-02

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Hey there, folks!

In February, we announced the launch of Caldera Spark, a proof-of-concept dashboard that enabled developers to permissionlessly launch their own rollups with a single click.

[https://mirror.xyz/calderachains.eth/\_AqxVmvrPjSHOQG0TE3ClWUD5vsIAGN3saU3ahhiBRs](https://mirror.xyz/calderachains.eth/_AqxVmvrPjSHOQG0TE3ClWUD5vsIAGN3saU3ahhiBRs)

Given that we [just launched our public testnet rollups](https://mirror.xyz/calderachains.eth/TZ3Qi1J7WsBQcJkmkvSXgd2TQzGOvdjYdwZT6KfXSiE), we decided now is a good time to retire Caldera Spark. **Spark was always meant to be a proof-of-concept, showcasing our ability to run hundreds of dedicated layer-two blockchains without breaking a sweat.** Now that we’ve done that, it’s time for us to re-focus our effort on our production-level infrastructure.

As we say goodbye to our beloved Caldera Spark we just want to give a huge shout-out to everyone who jumped in and tried it out. Let's take a quick trip down memory lane and share our excitement for what's coming next.

What a Ride!
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Seriously, you all blew our minds with your response to Caldera Spark. Seeing so many devs exploring layer-two blockchain tech was a massive sign that we're onto something big, and it's all thanks to you.

Let's Talk Numbers: Caldera Spark was an amazing experiment, and the results were beyond our wildest dreams. Here are some stats:

*   8,500 of you awesome people signed up
    
*   Over 5,000 rollups launched (mind-blowing, right?)
    
*   Multiple times, we had over 200 rollups running **concurrently!**
    

These figures just go to show the insane potential of Caldera’s infrasturcture and how stoked everyone is about layer-two solutions.

Time to Say Goodbye to Caldera Spark
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As we get ready to roll out our shiny new production dashboard, it's time to bid farewell to Caldera Spark. Spark was a fun experiment, and it did its job by showing off our abilities with deploying and running rollups and giving us priceless feedback from developers around the world.

What's Next
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Caldera Spark might be over, but our adventure is just getting started. We're working non-stop to bring the Caldera platform to production.

![](https://storage.googleapis.com/papyrus_images/942eddcbdf6a9be018fe87b91c65f5d6fb69c316c1c629c8330abc59ffb0a37e.png)

In the meantime, if you're itching to test out Caldera, [feel free to dive into our public testnets](https://mirror.xyz/calderachains.eth/TZ3Qi1J7WsBQcJkmkvSXgd2TQzGOvdjYdwZT6KfXSiE). Or, if you’re a developer working on a project, [contact us to spin up a production-ready, bespoke rollup](https://calderaxyz.gitbook.io/caldera-documentation/getting-started/create-a-mainnet-chain). Since last year, we’ve been running rollups in production, on Ethereum and Polygon mainnet, for select customers.

Once again, a massive thank you to everyone who tried out Caldera Spark. Your energy and support have played a huge role in shaping the future of Caldera, and we can't wait to show you what we've got cooking. Stay tuned!

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*Originally published on [Caldera](https://paragraph.com/@caldera/caldera-spark-retrospective-5000-rollups-launched)*