Teo Din, SysAdmin and developer. Explore web applications, hardware and telemetry projects, professional experience, and practical software engineering guides.https://teodin.com/enhttps://teodin.com/blog/idempotent-payment-notifications/https://teodin.com/blog/idempotent-payment-notifications/Handle duplicate payment notifications safely with durable event identities, database transactions, state validation and an outbox for external effects.Sun, 06 Sep 2026 00:00:00 GMThttps://teodin.com/blog/preserving-invoice-history/https://teodin.com/blog/preserving-invoice-history/Keep issued invoices stable when customer details change. A practical guide to snapshots, issue-time transactions, immutable documents and regression tests.Sun, 06 Sep 2026 00:00:00 GMThttps://teodin.com/projects/hokaguelounge/https://teodin.com/projects/hokaguelounge/Thematic Hookah Lounge website with a Ninja-inspired atmosphere.Wed, 17 Dec 2025 00:00:00 GMThttps://teodin.com/blog/anatomy_of_scalable_systems/https://teodin.com/blog/anatomy_of_scalable_systems/Design scalable systems around read and write patterns. Explore cache stampedes, queue backpressure, idempotency and measurable recovery trade-offs.Fri, 12 Dec 2025 00:00:00 GMThttps://teodin.com/blog/proxmox-install-node-with-ha-and-replication/https://teodin.com/blog/proxmox-install-node-with-ha-and-replication/Moving from one Proxmox node to two: storage choices, ZFS replication, quorum, failover limits and the recovery checks a homelab needs.Sat, 01 Feb 2025 00:00:00 GMThttps://teodin.com/projects/fracture/https://teodin.com/projects/fracture/Fracture is an invoicing application with multi-client management, detailed invoice lines, draft and issued documents, and historical customer information.Thu, 12 Dec 2024 00:00:00 GMThttps://teodin.com/projects/designarte/https://teodin.com/projects/designarte/Designarte is an invoice management platform built with PHP, MySQL and a modern frontend, supporting multiple clients and detailed invoice lines.Tue, 01 Oct 2024 00:00:00 GMThttps://teodin.com/projects/autologin/https://teodin.com/projects/autologin/AutoLogin browser extension for faster virtual classroom access, with QR scanning and locally stored login details. Explore the project and Chrome Web Store link.Thu, 18 Jan 2024 00:00:00 GMThttps://teodin.com/projects/telemetry/https://teodin.com/projects/telemetry/A Formula Student telemetry project for UJI Motorsport, combining sender and receiver software, data compression and real-time Grafana dashboards.Sun, 19 Nov 2023 00:00:00 GMThttps://teodin.com/projects/hornomotorsport/https://teodin.com/projects/hornomotorsport/Horno Motorsport is a furnace-control project for UJI Motorsport's carbon-fiber component production, with temperature control and automation features.Sun, 19 Mar 2023 00:00:00 GMThttps://teodin.com/projects/autoget/https://teodin.com/projects/autoget/AutoGet is a role-based ERP for team management, with email features and deployment at UJI Motorsport. Explore the application's features and interface.Thu, 13 Oct 2022 00:00:00 GMThttps://teodin.com/projects/bolt/https://teodin.com/projects/bolt/Bolt is a 3D-printed educational robot with movable arms and head, voice interaction and a DIY learning approach. Explore the hardware project.Wed, 09 Feb 2022 00:00:00 GMThttps://teodin.com/projects/utopiaapi/https://teodin.com/projects/utopiaapi/Utopia PHP API is a Composer package providing a unified interface for Utopia ecosystem APIs, simplifying requests, responses and application integrations.Sun, 28 Nov 2021 00:00:00 GMThttps://teodin.com/projects/utopiapay/https://teodin.com/projects/utopiapay/UtopiaPay is a CRP payment gateway for the Utopia ecosystem, with a REST API, merchant dashboards and integrations for WooCommerce and Easy Digital Downloads.Thu, 21 Oct 2021 00:00:00 GMThttps://teodin.com/projects/betaseacrh/https://teodin.com/projects/betaseacrh/BetaSearch is a search engine with automatic indexing, an advertising system and an admin dashboard for traffic, clicks and impressions.Wed, 23 Jun 2021 00:00:00 GMThttps://teodin.com/projects/3dpmi/https://teodin.com/projects/3dpmi/3D PMI is an ERP for managing a 3D printing farm and its inventory. Explore the project, its management features and application screenshots.Mon, 09 Mar 2020 00:00:00 GMThttps://teodin.com/projects/nuva/https://teodin.com/projects/nuva/Nuva was a Utopia P2P gaming website with verifiable gameplay, a token system, UtopiaPay integration and an administration dashboard.Thu, 25 Apr 2019 00:00:00 GMThttps://teodin.com/projects/metousite/https://teodin.com/projects/metousite/URL shortener with geotrackingSat, 04 Aug 2018 00:00:00 GMT