How do I replicate the droplet?

Hi guys, Let’s suppose I have two droplets ‘A’ and ‘B’. In ‘A’ droplet a NodeJS server broadcasts and receives the messages through websocket. My question is that How do I create the replicate of droplet ‘A’? In case droplet A down/fail then droplet ‘B’ automatically start the broadcasting and receiving the messages from users. Thanks,

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.


In order to be able to do this kind of failover, I would recommend using a load balancer. You can take a look at this article here on how to

Also, there are a lot of other Load balancing tutorials here:

I would recommend having a similar setup to this one here:

Load Balancing DigitalOcean

So 1 Load balancer, 2 web servers, and 1 database server.

Regarding the droplet replication, you could create a snapshot of your existing droplet and create a second droplet from that snapshot. That way you would have an exact copy. If you are going to be making a lot of changes to the files of your app, you could use a service like lsyncd to replicate your files, or just use DigitalOcean block storage solution and share a specific folder between the two droplets.

Hope that this helps! Regards, Bobby