We replaced our homegrown metrics pipeline with an off-the-shelf observability platform. The team resisted initially — ‘we can build something better suited to our needs’ — but the maintenance burden of the custom solution was consuming 20% of one engineer’s time every sprint. Sometimes buying is the right engineering decision.
What Changed
Database connection pooling was our biggest blind spot. Under normal load, direct connections worked fine. But during traffic spikes, the database would hit its connection limit and cascade failures across all services. A simple PgBouncer setup eliminated the issue entirely.
Post-mortems without action items are just storytelling. We implemented a strict follow-up process: every post-mortem produces at most three concrete action items, each assigned to a specific person with a deadline. Items that don’t get done within two sprints get escalated or explicitly deprioritized.
The Migration Path
The team’s relationship with technical debt changed when we started categorizing it. ‘Reckless’ debt (shortcuts we knew were wrong) gets prioritized for immediate paydown. ‘Prudent’ debt (intentional tradeoffs) gets documented and scheduled. The distinction removed the guilt and the arguments.
Unexpected Wins
We stopped doing quarterly planning and switched to six-week cycles with two-week cooldowns. The cooldowns are for tech debt, experiments, and developer-chosen projects. Team satisfaction scores jumped 30% and, counterintuitively, feature delivery actually accelerated.
Our cost optimization effort started with the boring stuff: right-sizing instances, cleaning up orphaned resources, and switching to reserved capacity for predictable workloads. These unglamorous changes saved more than any architectural redesign would have.
Thank you to everyone who reviewed early drafts of this post and pushed back on the parts that were too vague or too self-congratulatory. The final version is much better for their honesty.