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The Joys and Pains of Working with an Old Codebase
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Gordon Diggs
May 17, 2014
Programming
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The Joys and Pains of Working with an Old Codebase
Gordon Diggs
May 17, 2014
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Transcript
The Joys and Pains of Working With An Old Codebase
Gordon Diggs BACON 2014
The Joys and Pains of Working With An Old Codebase
Gordon Diggs BACON 2014
if total_guests == 150 && total_guests + 1 == 151
... end
Outline About Me Introduction to our codebase Adding features Executing
refactors Tools we use The joys
@gordondiggs Record Collector
@gordondiggs Baker / Cook
@gordondiggs Baker / Cook #devslovebaking
@gordondiggs New York City Resident
None
"I have always found that plans are useless but planning
is indispensable." - Dwight D. Eisenhower
The Codebase Ruby 2.1 Rails 2.3 Postgres, Redis, Memcached Started
in 2008 60 contributors ~128k lines of application code
#TODO: redo this
How to add features
1. Plan out the feature
1. Plan out the feature Have developers involved in the
planning
1. Plan out the feature Have developers involved in the
planning ! Let your unique development concerns be known
1. Plan out the feature Have developers involved in the
planning ! Let your unique development concerns be known ! Make it a conversation
2. Do a technical kick-off
2. Do a technical kick-off What new data models do
we need? ! What needs to be refactored? ! What might the challenges be?
3. Be prepared to do something else entirely
4. Write lots of tests, especially for things that already
exist
5. Document Things
Build awesome things
# because the "update_attributes!" does not behave as expected, we
need this def update_attributes_is_broken_with_nested_attribute_validations_in_rails ... end
How to execute refactors
Treat them like features
1. Plan out the refactor
2. Do a technical kick-off
3. Write lots of tests, especially for things that already
exist
4. Document Things
Build awesome things
Tools we use (and love)
None
None
None
None
None
None
None
None
Peter Welch - Programming Sucks stilldrinking.org/programming-sucks
The Joys
Get to fix lots of bugs
Get to fix lots of interesting bugs
Give time to fix the bugs
Treat your codebase like a campsite
Build awesome things
Thank you! @gordondiggs Special Thanks to: Mike Bernstein, Michael Hansen,
Solomon Kahn, Alan Macdougall, Aaron Quint, Todd Mazierski, Justin Searls, Stephanie Shih, Alyssa Stein