Microservices Part 3: Autoscale Under Load

[julia-kafarska]

Full tutorial with screenshots: https://blog.light-cloud.com/tutorials/microservices-on-light-cloud-part-3-autoscaling

Part 3 of 6 of the series Microservices on Light Cloud.

Load test a Light Cloud service with oha, watch it scale from zero to five instances, and learn why concurrency and database connection pools decide how well autoscaling works.

Level: Intermediate · Time: about 20 minutes · Plan: Starter · Stack: Node.js, Express, PostgreSQL, oha

Steps

• Step 1: Get the Part 3 code
• Step 2: Read the scaling controls
• Step 3: Set a ceiling of 5 instances
• Step 4: Install oha
• Step 5: Run the load test
• Step 6: Watch it scale
• Step 7: Read the results
• Step 8: Keep the database safe when scaling out
• Step 9: See who changed the scaling

Source code: https://github.com/light-cloud-com/tutorial-microservices
Live demo: https://main-web-examples.light-cloud.io

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