Feature flags are debt with an expiration date you must actually enforce. The fastest query is the one you never send, but the second fastest has a good index. Small pull requests get real reviews, large ones get approvals.
Getting started
The best architecture diagram is the one the new hire can redraw from memory. We measured first, and the bottleneck was not where anyone expected. Tests are documentation that fails loudly when it goes stale.
Every retry needs a budget, otherwise it is just a slower outage. Security is mostly about saying no to defaults that were convenient in 2010.
What didn’t
Feature flags are debt with an expiration date you must actually enforce. We wrote the migration twice: once to learn, once to ship. Small pull requests get real reviews, large ones get approvals.
- Write the failure mode down before writing code
- Pin versions, update on purpose
- Measure p95 and p99, not just the mean
- Delete dead code the same week
Most production incidents start as a small assumption nobody wrote down. Security is mostly about saying no to defaults that were convenient in 2010.
Trade-offs
Security is mostly about saying no to defaults that were convenient in 2010. The best architecture diagram is the one the new hire can redraw from memory. Every retry needs a budget, otherwise it is just a slower outage.
The fastest query is the one you never send, but the second fastest has a good index.
Latency percentiles tell a story that averages politely hide. Our on-call rotation improved the day we deleted half of the alerts.
Our on-call rotation improved the day we deleted half of the alerts. The best architecture diagram is the one the new hire can redraw from memory.
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