An AI coding agent, used to write code, needs to reduce your maintenance costs

My low value comment. This feels directionally correct to me. The problems I've been struggling with in my dev job for the past 6 months have been 80% maintenance/legacy code interfering with new feature development.

Some of our developers are overly aggressive about using AI and I've started going down that path because I need to keep up and actually enjoy the flow of working with AI in my IDE.

I put a lot of work into keeping my area of the codebase understandable and coherent but I do not see that from the others on our team. I'm not perfect but I and extremely sensitive to incoherent, or un-grok-able at a glance.

Anyway, I like the novel (to me at least) framing of this article!

In my experience AI reduces maintenance costs. Though, context might matter here, I'm working on a multi decade set of projects, while there is a lot of greenfield feature development, the old code / older projects have suddenly become a lot easier to work with, modernize, and in a bunch of cases, eliminated. Dependency on old libraries, build tools, in some cases updated, in other cases just eliminated, builds are faster, easier for developers, etc. End to end testing has become a lot easier to setup and automate. DevOps have been improved a lot, diagnosing production issues drastically improved, we have a ton of logs and information, and while we have various consolidated dashboards / monitoring to capture critical things, now we can do a lot more analysis on our deployed system (~50 ish projects)

Insightful. Agree with this take.

Unfortunately, maintainability is simply bucketed as a "non-functional" requirement.

Maintainability (and similar NFRs) should actually be considered what preserves and enables the delivery of future functional requirements -- in contrast to framing non-functional requirements as simply "how" the software must do what it does vs. the "what"/functional requirements that "actually matter".

From that standpoint, if a steady flow of features/improvements is important for a project, maintainability isn't really a non-functional requirement at all, and amounts to being a functional requirement, in practice, over anything except the shortest of time horizons.

Same with code reviews.

I wonder if AI could make code reviews more presentable.

for example, with human code reviews, developers learn quickly not to visually change code like reflowing code or comments, changing indent (where the tools can't suppress it), moving functions around or removing lines or other spurious changes.

And don't refactor code needlessly.

also, could break reviews up into two reviews - functional changes and cosmetic changes.

The maintenance-cost framing is the useful constraint. I’d rather see agents default to smaller diffs, test scaffolding, and explicit assumptions than maximize lines changed per prompt.

For me, if I can make a kickass testing system that people love so much that they actually build features with it and it’s not an afterthought, then maintenance becomes much easier. It’s often called test driven development but I’ve rarely seen it done in such a way that the dev ex is good enough for it to work.

But say you have that. Then you have great profiling. At that point you can measure correctness and performance. Then implementation becomes less of a focal point. And that makes it a lot easier to concede coding to ai

I think AI is great for the soul destroying boring stuff that makes me want to quit my job like wrapping legacy code in test cases. Hey I’ll take on any idiot who’s willing to do that job, even if he’s artificial.