Recent Articles
Finding Long-Running Queries in MySQL
Dec 22, 2021 · 4 min read
Poorly optimized queries and excessive connections can cause problems in MySQL, here's a quick way to identify and kill them.
Finding Long-Running Queries in PostgreSQL
Nov 26, 2021 · 2 min read
Poorly optimized queries and excessive connections can cause problems in PostgreSQL, here's a quick way to identify and kill them.
Calculating Table Size in PostgreSQL
Nov 26, 2021 · 2 min read
Knowing how much disk space individual tables take up is important for DB maintenance and debugging, and it can be accomplished with a single query in PostgreSQL.
Reliably Finding Executables in $PATH
Aug 27, 2021 · 4 min read
Most built-in commands commonly used to find executables in $PATH don't always work quite as expected, or are shell-specific.
How to Persist Docker Build Arguments as Environment Variables
Aug 22, 2021 · 3 min read
Values from the Docker ARG instruction aren't persisted in built images, so here's a quick tip on how to persist them!
Docker Shell vs. Exec Form
Mar 22, 2021 · 4 min read
The RUN, ENTRYPOINT, and CMD, instructions all have two different forms they can be written in, and those forms change how each of those instructions behaves.
You Don't Need an Init System for Node.js in Docker
Mar 20, 2021 · 5 min read
But you do need to think about how your application handles exit signals.
Publishing Docker Images with GitHub Actions
Feb 20, 2021 · 7 min read
Publishing Docker images is a common CI/CD task, and the tight integration GitHub Actions has with GitHub repositories makes it a great tool for the job.
Publishing Docker Images with CircleCI
Feb 15, 2021 · 8 min read
Publishing Docker images is a common CI/CD task, and the flexibility CircleCI offers makes it a great tool for the job.
Changing a Git Commit Message
Dec 5, 2020 · 6 min read
The Git commands to change a commit message are situational - here's a short guide to all of them.
Undoing a Git Commit
Dec 3, 2020 · 5 min read
Complicated Git commands are hard to remember and are full of landmines - here's a short guide on how to undo any Git commit.
Installing a Specific Version of Helm
Nov 24, 2020 · 4 min read
Helm, the package manager for Kubernetes, can be sensitive to the version of Tiller running in cluster, and as a result may require you to install a specific version.