Technical notes, projects, modules, tools, workflows, and architecture on electronics, software engineering, and DevOps.
A Rust service that serves Indonesia's administrative regions — 38 provinces down to 83,768 villages, keyed by the official Ministry of Home Affairs codes — as four cascading lookups with search, so every address form in every project gets the same answer.
A small Rust service between applications and S3-compatible storage: it hands out presigned links so browsers talk to storage directly, gives each file a lifecycle, copies between buckets on the server, and keeps storage credentials out of every application.
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