Persistence on Fahim Imam - Software Developerhttp://fahimimam.pro.bd/tags/persistence/Recent content in Persistence on Fahim Imam - Software DeveloperHugo -- 0.155.2en-usSat, 15 Aug 2026 00:00:00 +0000Atomic writes in Go: temp file, fsync, renamehttp://fahimimam.pro.bd/blog/atomic-file-writes-go/Sat, 15 Aug 2026 00:00:00 +0000http://fahimimam.pro.bd/blog/atomic-file-writes-go/Every write to data.json in lunch-tracker goes through a temp file in the same directory, an explicit fsync, then a rename. Three lines of reasoning turn that into correctness.