https://hanhpham.vercel.app/tags/performance/Recent content in Performance on Hanh Pham's BlogHugoen-usFri, 02 Oct 2026 09:00:00 +0700https://hanhpham.vercel.app/posts/docker-buildkit-caching-economics-in-ci/Fri, 02 Oct 2026 09:00:00 +0700https://hanhpham.vercel.app/posts/docker-buildkit-caching-economics-in-ci/Enabling remote layer caching in CI often slows builds down instead of speeding them up. Here is how network transit limits, cache thrashing, and local NVMe runners dictate the real economics of container builds.https://hanhpham.vercel.app/posts/kubernetes-cfs-cpu-throttling-and-resource-limits/Mon, 28 Sep 2026 09:00:00 +0700https://hanhpham.vercel.app/posts/kubernetes-cfs-cpu-throttling-and-resource-limits/Setting hard CPU limits on latency-sensitive microservices destroys p99 response times while average utilization appears deceptively low. Here is how Linux CFS quotas, Go GOMAXPROCS, and GOMEMLIMIT actually behave under load.https://hanhpham.vercel.app/posts/typesafe-jev-decision-models/Tue, 22 Sep 2026 09:00:00 +0700https://hanhpham.vercel.app/posts/typesafe-jev-decision-models/When you force a 70-billion-parameter language model to output ’true’ or ‘false’, you pay for sequential token decoding, uncalibrated probabilities, and broken JSON. Here is why TypeSafe stripped natural language out of the loop.https://hanhpham.vercel.app/posts/sql-server-trustworthy-rollback-xact-abort/Sun, 06 Sep 2026 11:00:00 +0700https://hanhpham.vercel.app/posts/sql-server-trustworthy-rollback-xact-abort/When one step in a multi-step SQL Server script fails, what actually happens to your data depends entirely on how you’ve wired up error handling, and the default is not what most people assume. Three scenarios, measured with real ledger output.https://hanhpham.vercel.app/posts/sql-server-wildcard-joins-and-unpivot/Sat, 05 Sep 2026 10:30:00 +0700https://hanhpham.vercel.app/posts/sql-server-wildcard-joins-and-unpivot/A join rule that matches ‘anything’ looks like an ordinary filter, until it quietly multiplies your row count. Measured, not estimated: what a wildcard join actually costs, why a CREATE INDEX line doesn’t always buy you a seek, and why UNPIVOT beats a ten-way OR chain.https://hanhpham.vercel.app/posts/go-performance-profiling-with-pprof/Sat, 01 Aug 2026 10:00:00 +0700https://hanhpham.vercel.app/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.