PLAYGROUND · NOT SCREENSHOTS — EVERY BUTTON RUNS

The site is the demo.

Proof that what I ship actually runs — the same Go + PostGIS backend architecture I deliver to clients. No mocks, no recordings, no "once we deploy".

connecting Go API…
01

Housing valuation (Go + PostGIS)

Enter coordinates and area. Go queries POIs within 1km via PostGIS GIST, applies weights and age depreciation, returns estimate + confidence + factor breakdown.

PRESET · TPE

點按左側按鈕,向 Go API 發起一次估價請求

POST /api/demo/housing/estimate

02

Go sort benchmark

Server runs an actual Go sort.Slice / sort.SliceStable and returns elapsed time + throughput. Goroutine keeps the main event loop free.

ELEMENTS
ALGORITHM
Elapsed
Throughput
Items
Algorithm
03

Realtime visitor stats

Polls every 10 seconds. Watch PV/UV climb as you browse. Backed by raw SQL aggregations on a sqlx connection pool.

PV · 5 min
UV · 5 min
Total PV