FrontendAstroStatic HTML, zero framework JS shippedOne small inline script for interactivityPico CSS — styles semantic HTML, no JS
BackendGinGo HTTP framework, very low overheadSingle static binary on AlpineValidation → 400, duplicate email → 409
DatabaseRedisIn-memory key-value storeHash customer:<id>, sorted set of idsINCR customer:next_id for numeric ids