- Add VolatileFetchService to orchestrate API fetch and cache storage
- Add POST /volatile/fetch/weather/{city} endpoint
- Add POST /volatile/fetch/news/{category} endpoint
- Add POST /volatile/fetch/stock/{symbol} endpoint
- Add POST /volatile/fetch/crypto/{symbol} endpoint
Endpoints integrate with external API providers (OpenMeteo, NOS/BBC,
AlphaVantage) and store results in volatile cache with configurable TTL.
Designed for scheduler cron jobs to prefetch user-relevant data.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>