Hacker News Reader

Strongly disagree. Working in operations, most days I don't care what the frontend looks like. But, for example, what if a developer wants to switch to a new recommendation algorithm? That's going to go behind a feature flag so we can ramp it up incrementally and switch back to the old algorithm if there are any problems.

View on HN

Absolutely. In my experience, most unforeseen issues are related to performance at scale with unexpected data (the kind that seems to only ever crop up in production, and is really hard to design a load test for).

Performance issues in the browser are rare, and have nothing to do with the number of users using the application.

Reply on news.ycombinator.com