Categories of Bugs

This assumes a mature XP process is underway (this is almost 20 years old, so should not be a surprise to anyone).

If you are actively developing software there are only a limited category of bugs:

  • The critical – stop development and fix
  • The important – to be picked up as the next highest priority item
  • Prioritised alongside other upcoming work items.
  • Do not fix – record as unimportant

These days there should be no reason to keep an extensive bug backlog.

A bug is effectively a missing test (unit, integration or end-to-end).

With a sufficient test suit the QA should be getting bored. Hopefully they are spending the time working on acceptance criteria and acceptance tests for upcoming work.

80/20 Principle and Optimizing

The following is the means of finding the directory size of a folder and its contents on a mac:

du -s

This came in handy when I was trying to speed up a website deploy.

It turns out that over 98% of the content of the site was in one folder. Spliting this off an changing the copy policy saves between 50% and 75% of the deploy time.

Look for the quick wins!

New Machine Setup

I have recently moved jobs. This comes with the inevitable machine setup issue.

This is a list of things that I have been installing on my machine so that I won’t have to build myself another list:

  • Chrome
  • homebrew
  • neo4j
  • java8
  • elixir
  • exercism
  • vscode
    • Enable autosave (on the file menu)
    • GitLens
    • IntelliJ IDEA Keybindings
    • JS Refactor
  • Gradle
  • git ssh setup

After every mac os upgrade:

xcode-select –install

Development Practices That I Want To Use In Future Roles

I have just left one company for a new role. These are a few notes that I would like to bring forward to future companies:

  • Empower the devs add cloud resources within a limit say $100 per month without having to ask. The meetings to request this will cost more than the benefits. Dev teams will spend less time waiting.
  • Have a bell that can be used to trigger team timeouts. Hold the discussions as soon as they are needed. Decisions should be made by the team. Go one better than us and actually write up the decision including why’s and assumptions.
  • When adding a new piece of technology always consider how to replace it. Cloud services do stop with anything between 1 and 6 months notice.
  • Actively monitor the cloud infrastructure bills, both current and projected. Warn the team daily if a threshold is breached.
  • Never let the build stay broken. You can only ignore tests for a fixed period of days. This is only to be used for infrastructure failures.
  • Deploy frequently. Weekly at a minimum. Code not deployed will rot. Use feature switches if possible (but ruthlessly remove them after a feature is live). This does allow deploy from master.

Script to help review Exercism.io Elixir


@rem fix a.test.exs
@rem removes the pending tag from the test and adds _2 to filename
@echo %1 | sed -e "s/.exs/_2.exs/" > temp.txt
@set /p Filename=<temp.txt
@cat %1 | grep -v "@tag :pending" > %Filename%
@rm temp.txt
elixir %Filename%

view raw

fix_test.bat

hosted with ❤ by GitHub

Or on a mac/linux

grep -v @tag *_test.exs > test.exs && elixir test.exs