Personal website of Mark de Jonghttps://markdejong.org/https://markdejong.org/blog/mycelium-v2-backend/https://markdejong.org/blog/mycelium-v2-backend/REST API, PostgreSQL time-series storage, Auth0, and OpenAPI-driven clients for the plant monitoring cloudMon, 01 Jun 2026 00:00:00 GMThttps://markdejong.org/blog/mycelium-v2-edge-central/https://markdejong.org/blog/mycelium-v2-edge-central/Building the Rust-based hub that onboards over BLE, syncs peripherals, and bridges sensor data to the cloudFri, 15 May 2026 00:00:00 GMThttps://markdejong.org/blog/mycelium-v2-edge-peripheral-efficiency/https://markdejong.org/blog/mycelium-v2-edge-peripheral-efficiency/Evaluating the efficiency of our hardware and firmwareThu, 23 Oct 2025 00:00:00 GMThttps://markdejong.org/blog/mycelium-v2-edge-firmware/https://markdejong.org/blog/mycelium-v2-edge-firmware/Building an efficient ESP32 edge device for Mycelium v2Wed, 17 Sep 2025 00:00:00 GMThttps://markdejong.org/blog/mycelium-v2-edge-peripheral/https://markdejong.org/blog/mycelium-v2-edge-peripheral/Building a efficient ESP32 edge device for Mycelium v2Sun, 14 Sep 2025 00:00:00 GMThttps://markdejong.org/blog/mycelium-v2-build-system/https://markdejong.org/blog/mycelium-v2-build-system/A comprehensive comparison of CI/CD tools including GitHub Actions, Dagger, Bazel, and EarthlyWed, 03 Sep 2025 00:00:00 GMThttps://markdejong.org/blog/mycelium-v2-series-overview/https://markdejong.org/blog/mycelium-v2-series-overview/An IoT-based plant-monitoring ecosystemTue, 19 Aug 2025 00:00:00 GMThttps://markdejong.org/blog/type-class-constraints-algebra/https://markdejong.org/blog/type-class-constraints-algebra/Empower your object algebrasFri, 05 Jan 2024 00:00:00 GMThttps://markdejong.org/blog/openfga/https://markdejong.org/blog/openfga/Fine grained authorizationTue, 02 Jan 2024 00:00:00 GMThttps://markdejong.org/blog/rust-rest-api/https://markdejong.org/blog/rust-rest-api/My first experience writing a REST API in Rust as a Functional Scala developerTue, 30 May 2023 00:00:00 GMThttps://markdejong.org/blog/event-sourcing/https://markdejong.org/blog/event-sourcing/Don't build an event-sourcing frameworkMon, 15 May 2023 00:00:00 GMThttps://markdejong.org/blog/astro/https://markdejong.org/blog/astro/And it was a blazing fast experienceThu, 11 May 2023 00:00:00 GMThttps://markdejong.org/blog/baremetalrust-esp32/https://markdejong.org/blog/baremetalrust-esp32/I wrote my firmware using Rust!Wed, 03 May 2023 00:00:00 GMThttps://markdejong.org/blog/oracle-testing/https://markdejong.org/blog/oracle-testing/Getting rid of mocks in your service layer tests and test your database for realMon, 09 Aug 2021 00:00:00 GMThttps://markdejong.org/blog/tracing/https://markdejong.org/blog/tracing/Tracing can be a good tool to gain in-depth insights in problems you might have in your application.Tue, 04 Feb 2020 00:00:00 GMThttps://markdejong.org/blog/a-functional-ecosystem/https://markdejong.org/blog/a-functional-ecosystem/At DHL I built a microservice using cats, cats-effect, cats-tagless, refined, doobie, http4s and ZIOMon, 10 Jun 2019 00:00:00 GMThttps://markdejong.org/blog/saga/https://markdejong.org/blog/saga/This blog post is about Sagas, a pattern for managing failures.Fri, 10 Aug 2018 00:00:00 GMThttps://markdejong.org/blog/telegram-bot-in-functional-scala/https://markdejong.org/blog/telegram-bot-in-functional-scala/ In this article, I'll explain how I build a Telegram bot by applying Functional Scala. Libraries used are FS2, Circe, Doobie, and AttoTue, 16 May 2017 00:00:00 GMThttps://markdejong.org/blog/machine_learning/https://markdejong.org/blog/machine_learning/Did you ever question what it can do for you? This is a brief introduction to Machine Learning.Tue, 21 Jun 2016 00:00:00 GMThttps://markdejong.org/blog/teevy/https://markdejong.org/blog/teevy/Haskell in production: A REST/JSON web service built with aeson, postgresql-simple, scotty and configurator.Tue, 31 May 2016 00:00:00 GMT