Reliability doesn't come from fancy architecture — it comes from getting the basics right. Good error handling, proper logging, clear database migrations, and well-tested code go a long way.
Over the years, I've learned that the simplest solution is usually the most reliable. Avoid premature optimization, write code that's easy to debug, and always have a plan for when things go wrong.
Some practical tips: use database transactions for multi-step operations, always validate input at the boundary, log enough context to debug issues without drowning in noise, and set up monitoring before you need it.