Horizontal scaling WebSockets on Kubernetes and Node.js

• metrics-server

  40 5,419 8.6 Go

  Scalable and efficient source of container resource metrics for Kubernetes built-in autoscaling pipelines.

  

The most common example of the HPA configurations are based on CPU/Memory utilisation metrics provided by metrics-server. In this article I'll give an example of scaling up/down a Kubernetes deployment based on application-specific custom metrics. The application will be a Node.js (Express) server with WebSockets support and the goal will be to scale up/down the deployment based on number of connected clients (connections count).

• k8s-prometheus-adapter

  13 1,824 6.2 Go

  An implementation of the custom.metrics.k8s.io API using Prometheus

  

Setting up prometheus-adapter to convert the prometheus metric to HPA complaint metric.

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• prometheus

  381 52,748 9.9 Go

  The Prometheus monitoring system and time series database.

  

Configuring Prometheus to harvest the exposed metrics.

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