7.7Lighthouse CI Server: Tracking Trends

The LHCI server provides historical tracking, allowing you to see performance trends over time and catch gradual degradation that per-commit checks might miss:

# Install and start the LHCI server
npm install -g @lhci/cli @lhci/server
lhci server --storage.storageMethod=sql \
  --storage.sqlDialect=postgres \
  --storage.sqlConnectionUrl=postgresql://user:pass@db:5432/lhci

The server dashboard shows:

• Score trends over time (per URL, per metric)
• Comparison between branches (PR vs. main)
• Build-to-build diffs highlighting what changed
• Flagged regressions with commit attribution