Scale your microservices by MicroProfile Metrics on Kubernetes

on YouTube ↗34m

" summary

Demonstrates using MicroProfile Metrics exported as an application metric (a login_counter), scraped by Prometheus and exposed via the Prometheus Adapter as an external metric to Kubernetes HPA. Shows building a Docker image, deploying with Prometheus scrape annotations, creating an external metric name, and an HPA that targets value 3 with max replicas 5. During the demo the counter rises to 4, HPA increases replicas from 1 to 2 (average per pod logic), then falls back as logouts decrease the metric.

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" chapters (13)

1. 0:00Introduction
2. 1:13Cloud Native motivation
3. 2:58Scalability principles
4. 6:15Vertical vs Horizontal Pod Auto Scaling
5. 8:46Kubernetes HPA and Metrics API
6. 12:01MicroProfile Metrics overview
7. 16:50Demo setup
8. 19:44Deploying to Kubernetes
9. 23:01Prometheus Adapter API
10. 25:58HPA with MicroProfile Metrics
11. 29:52Live auto-scaling demo
12. 30:58Summary
13. 31:19Q&A

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