https://hanhpp.github.io/tags/go/Recent content in Go on Hanh Pham's BlogHugoen-usFri, 04 Sep 2026 10:00:00 +0700https://hanhpp.github.io/posts/go-1-27-is-quietly-load-bearing/Fri, 04 Sep 2026 10:00:00 +0700https://hanhpp.github.io/posts/go-1-27-is-quietly-load-bearing/Generic methods finally landed, json/v2 is already running underneath your code, and the allocator got faster while you weren’t looking. Six of this release’s changes take effect without you opting in; here’s which ones will cost you an afternoon.https://hanhpp.github.io/posts/go-performance-profiling-with-pprof/Sat, 01 Aug 2026 10:00:00 +0700https://hanhpp.github.io/posts/go-performance-profiling-with-pprof/Your Go service is slow, but you don’t know where. Guessing is not a strategy. pprof tells you exactly where your program spends its time, memory, and CPU; here’s how to use it.https://hanhpp.github.io/posts/caching-geospatial-queries-without-a-geo-database/Thu, 23 Jul 2026 15:00:00 +0700https://hanhpp.github.io/posts/caching-geospatial-queries-without-a-geo-database/You don’t need PostGIS or a geohash library to cache repeat road-distance lookups: rounding coordinates and a unique index gets you most of the win.https://hanhpp.github.io/posts/self-hosting-a-routing-engine/Tue, 21 Jul 2026 14:00:00 +0700https://hanhpp.github.io/posts/self-hosting-a-routing-engine/Road distance, not straight-line distance, is what travel expense claims and delivery pricing actually need, here’s how to get it without a metered maps API.https://hanhpp.github.io/posts/hugo-code-blocks-demo/Thu, 16 Jul 2026 10:00:00 +0700https://hanhpp.github.io/posts/hugo-code-blocks-demo/Hugo ships with built-in syntax highlighting via Chroma, no plugins required.