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DevOps

DevOps tutorials for people who want an app to run the same way on every machine, not only on the one it was written on. Learn what each command does before you trust it. A copied command runs just as happily when it is wrong.

Any category Programming21 Python 4 JavaScript 6 TypeScript 1 SQL 6 HTML and CSS 4 DevOps3 Docker 3
Any topics Deployment and Containers 11 Performance Optimization 3 Security 5 Testing and Debugging 1
Any level Advanced 3
DevOps Performance Optimization Advanced Clear filters 3 results
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Cut Rebuild Time With a BuildKit Cache Mount

Add a BuildKit cache mount to pip install so a changed requirements file downloads only the new packages. After this, a dependency change no longer means downloading everything again.

4 min read
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Multi-Stage Node or Go Image Under 50 MB

Build a Go service in a multi-stage Dockerfile and ship it in an image well under 50 MB, with a non-root user and a health check. After this, you know why Go gets that small and Node does not.

4 min read
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Cap CPU and Memory So One Container Can't Starve the Host

Set CPU and memory limits, watch them work, change them on a running container and set them in Compose. After this, one busy container cannot take the whole machine.

4 min read