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feat: initial FRED API Proxy project

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- Go web server using Gin framework
- Proxy FRED economic data API
- Support series, observations, search, releases endpoints
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xieyao
2026-04-01 06:48:29 +00:00
commit 96711ffb35
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2026/03/31 13:04:35 No .env file found, using default config
FRED API Server starting on :8080
FRED API Base URL: https://api.stlouisfed.org/fred
Available endpoints:
GET /health - Health check
GET /api/v1/series - Get series info
GET /api/v1/series/observations - Get observations
GET /api/v1/series/search - Search series
GET /api/v1/releases - Get all releases
GET /api/v1/releases/dates - Get release dates
GET /api/v1/release/series - Get series in release
Examples:
curl 'http://localhost:8080/api/v1/series?series_id=GNPCA'
curl 'http://localhost:8080/api/v1/series/observations?series_id=GNPCA&limit=10'
curl 'http://localhost:8080/api/v1/series/search?search_text=GDP'
[GIN] 2026/03/31 - 13:04:37 | 200 | 65.258µs | ::1 | GET "/health"
[GIN] 2026/03/31 - 13:26:20 | 200 | 54.616µs | ::1 | GET "/health"
[GIN] 2026/03/31 - 13:26:24 | 200 | 50.001µs | ::1 | GET "/health"
[GIN] 2026/03/31 - 13:26:26 | 200 | 357.800542ms | ::1 | GET "/api/v1/series?series_id=GNPCA"
[GIN] 2026/03/31 - 13:26:26 | 200 | 294.788721ms | ::1 | GET "/api/v1/series/observations?series_id=GNPCA&limit=5&sort_order=desc"
[GIN] 2026/03/31 - 13:26:29 | 200 | 2.612991796s | ::1 | GET "/api/v1/series/search?search_text=unemployment&limit=3"
[GIN] 2026/03/31 - 13:26:33 | 200 | 52.442µs | ::1 | GET "/health"
[GIN] 2026/03/31 - 13:26:34 | 200 | 326.98803ms | ::1 | GET "/api/v1/series?series_id=GNPCA"
[GIN] 2026/03/31 - 13:26:35 | 200 | 288.81544ms | ::1 | GET "/api/v1/series/observations?series_id=GNPCA&limit=5&sort_order=desc"
[GIN] 2026/03/31 - 13:26:41 | 500 | 1.001380921s | ::1 | GET "/api/v1/releases?limit=3"
[GIN] 2026/03/31 - 13:26:42 | 200 | 3.419214632s | ::1 | GET "/api/v1/series/search?search_text=unemployment%20rate&limit=3"
Shutting down server...