Design Notes
Why these charts
We kept it simple on purpose: show trends, compare pages fairly, and surface problems fast.
Questions we cared about
- Traffic When do we spike? (pageviews by day)
- Reliability Are errors trending up or down? (error rate)
- Perf vs Value Which slow pages are also popular?
- Reality check What happened recently? (activity table)
Chart choices
- Line → time trends (pageviews, error rate)
- Bar → category comparisons (per-page medians, top pages)
- Scatter → relationships (load vs pageviews)
- Grid → raw details for verification
What we measured
- Pageviews (14d) — time series → line
- Error rate (14d) — errors ÷ total → line (y starts at 0%)
- Median load by page — robust vs outliers → bar (Top 10)
- Load vs views — prioritize slow + popular → scatter
- Recent activity — quick sanity table (latest 100)
Skipped on purpose
No pie charts — they’re hard to read precisely. We stuck to charts that decode quickly.
Deep-dives