Question 1

How to deploy Poxa on Kubernetes for production?

Accepted Answer

Use the Docker image from Docker Hub, create a deployment with environment variables configured for PORT, SSL, and app credentials. Ensure persistent storage for SSL certificates and set up a service for load balancing, as the README lacks specific Kubernetes guidance but Docker support is provided.

Question 2

Poxa vs Pusher: which is better for a startup on a budget?

Accepted Answer

Poxa is cost-effective for self-hosting with control over infrastructure, but requires server management. Pusher offers a managed service with scalability but has recurring costs. Choose Poxa if you have DevOps resources; otherwise, Pusher reduces operational overhead.

Question 3

Does Poxa support clustering for high availability?

Accepted Answer

No, Poxa currently runs as a single-node server, with distributed deployment listed as a TODO item. For fault tolerance, you'd need to implement external load balancing or await future updates, which might not suit high-traffic applications.

Question 4

How to migrate from Pusher to Poxa step by step?

Accepted Answer

Update client libraries to point to your Poxa server's host and port, copy over app credentials from Pusher, and configure SSL if needed. Test with the provided console for monitoring, as shown in the README with example code snippets for pusher-js and pusher-gem.

Question 5

Can Poxa handle multiple applications on one server instance?

Accepted Answer

Poxa is designed for a single app per instance, as per the README's description of a 'single registered app'. For multiple apps, you'd need to run separate instances or fork the project to modify the code, which adds complexity.

Question 6

What are the performance benchmarks for Poxa with thousands of connections?

Accepted Answer

The README doesn't provide benchmarks, but being Elixir-based, it should handle many connections efficiently due to Erlang's concurrency. However, without clustering, performance is capped by single-node resources, so stress-testing is recommended for large-scale use.

Question 7

How to secure Poxa with Let's Encrypt SSL certificates?

Accepted Answer

Generate certificates using Certbot or similar tools, then set environment variables like POXA_SSL, SSL_CERTFILE, and SSL_KEYFILE to the certificate paths. Mount the certificate files in Docker or on the server, as outlined in the configuration section for secure connections.

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