JSClimateNow

The problem

Weather clients re-fetch aggressively and fall over without a connection. I wanted one that stayed fast and useful offline.

Approach

• 01Added a request-throttling cache layer to collapse redundant API calls.
• 02Built an offline-first localStorage fallback for last-known data.
• 03Hand-rolled data visualisations instead of a heavy chart lib.

3 architecture decisions documented. Switch to Engineer view to inspect the system underneath.

Outcomes

• ✓98/100 Lighthouse performance
• ✓~60% bandwidth reduction via caching
• ✓Usable offline with graceful degradation