Data Science applied in Financehttps://cfocoder.com/en-ushttps://cfocoder.com/posts/silverbullet-quick-start-guide-for-students/https://cfocoder.com/posts/silverbullet-quick-start-guide-for-students/A practical guide to getting productive with SilverBullet for academic work. Based on the official video series by Zef Hemel. Thu, 11 Jun 2026 00:00:00 GMTSilverBulletNote-TakingStudentsMaster DegreePKMMarkdownAcademic WorkflowProductivityEducationhttps://cfocoder.com/posts/why-i-switched-from-obsidian-to-silverbullet/https://cfocoder.com/posts/why-i-switched-from-obsidian-to-silverbullet/I moved from Obsidian to SilverBullet, an open-source web-based note-taking platform. Here is why I made the switch, what I learned, and a complete installation guide based on my real experience getting it running on an ARM server with Cloudflare Access.Thu, 11 Jun 2026 00:00:00 GMTSilverBulletObsidianNote-TakingSelf-HostingCloudflareDockerMarkdownOpen SourceProductivitySelf-Hostinghttps://cfocoder.com/posts/cube-core-semantic-layer-contoso-llm-deterministic/https://cfocoder.com/posts/cube-core-semantic-layer-contoso-llm-deterministic/A didactic guide to remember how to build a semantic layer with Cube Core, DuckDB, and Contoso: YAML semantics, Python helper, notebook implementation, and LLM usage for deterministic analytics.Sat, 06 Jun 2026 00:00:00 GMTCube CoreSemantic LayerLLMDuckDBContosoData ModelingAIDatahttps://cfocoder.com/posts/learning-fast-with-notebooklm-the-three-questions-i-want-to-remember/https://cfocoder.com/posts/learning-fast-with-notebooklm-the-three-questions-i-want-to-remember/A practical learning workflow inspired by a NotebookLM video: use AI to extract mental models, map expert disagreements, and test real understanding instead of collecting passive summaries.Sat, 06 Jun 2026 00:00:00 GMTNotebookLMLearningAIhttps://cfocoder.com/posts/migrating-from-wordpress-to-astro-a-practical-guide-based-on-my-own-blog-migration/https://cfocoder.com/posts/migrating-from-wordpress-to-astro-a-practical-guide-based-on-my-own-blog-migration/How I moved CFOCoder from WordPress to Astro, preserved posts and images, kept redirects working, and ended up with a faster, safer static blog.Sat, 06 Jun 2026 00:00:00 GMTWordPressAstroBloghttps://cfocoder.com/posts/from-native-installation-to-a-more-stable-hadoop-hive-stack-with-coolify/https://cfocoder.com/posts/from-native-installation-to-a-more-stable-hadoop-hive-stack-with-coolify/Part 7 in the Hadoop and Hive Tutorial SeriesSat, 11 Apr 2026 00:00:00 GMTHadoopData EngineeringHadoophttps://cfocoder.com/posts/querying-apache-hive-from-dbeaver-starting-hiveserver2-and-connecting-a-desktop-sql-client/https://cfocoder.com/posts/querying-apache-hive-from-dbeaver-starting-hiveserver2-and-connecting-a-desktop-sql-client/Part 6 in the Hadoop and Hive Tutorial SeriesTue, 24 Mar 2026 00:00:00 GMTHadoopData EngineeringHadoophttps://cfocoder.com/posts/from-hdfs-to-sql-queries-loading-csv-files-into-hive-external-tables-and-querying-with-sql/https://cfocoder.com/posts/from-hdfs-to-sql-queries-loading-csv-files-into-hive-external-tables-and-querying-with-sql/Part 5 in the Hadoop and Hive Tutorial SeriesWed, 18 Mar 2026 00:00:00 GMTHadoopData EngineeringHadoophttps://cfocoder.com/posts/restic-minio-for-openclaw-what-it-is-what-it-solves-and-the-quick-reference-i-wanted-yesterday/https://cfocoder.com/posts/restic-minio-for-openclaw-what-it-is-what-it-solves-and-the-quick-reference-i-wanted-yesterday/Yesterday I spent part of the day optimizing my OpenClaw setup and cleaning up the way I protect its operational state.Mon, 16 Mar 2026 00:00:00 GMTMinIOObject StorageLinuxhttps://cfocoder.com/posts/building-a-modern-frontier-data-stack-hadoop-3-4-3-hive-4-2-0-and-minio-s3-integration-in-2026/https://cfocoder.com/posts/building-a-modern-frontier-data-stack-hadoop-3-4-3-hive-4-2-0-and-minio-s3-integration-in-2026/A few days ago, I published posts about how to install Hadoop 3.3.6 natively on Ubuntu. At that time, I thought it was the state of the art. But things in the Big Data world move fast.Thu, 12 Mar 2026 00:00:00 GMTHadoopData EngineeringHadoophttps://cfocoder.com/posts/apache-hive-3-1-3-on-ubuntu-native-installation-on-top-of-hadoop-3-3-6/https://cfocoder.com/posts/apache-hive-3-1-3-on-ubuntu-native-installation-on-top-of-hadoop-3-3-6/In Part 1 of this series, I installed Hadoop 3.3.6 natively on Ubuntu 24.04 and configured HDFS in pseudo-distributed mode. In Part 2, I configured YARN and ran the canonical WordCount job on War and Peace. In Part 3, I improved the text processing pipeline by...Tue, 10 Mar 2026 00:00:00 GMTHadoopData EngineeringHadoophttps://cfocoder.com/posts/correcting-word-frequencies-with-data-normalization-mapreduce-text-processing-on-war-and-peace-part-3/https://cfocoder.com/posts/correcting-word-frequencies-with-data-normalization-mapreduce-text-processing-on-war-and-peace-part-3/In Part 1 of this series, we installed Hadoop 3.3.6 natively on Ubuntu and configured HDFS for distributed storage. In Part 2, we configured YARN, wrote our first MapReduce program (WordCount), and executed it against the full text of War and Peace.Sun, 08 Mar 2026 00:00:00 GMTHadoopData EngineeringHadoophttps://cfocoder.com/posts/running-your-first-mapreduce-job-on-hadoop-wordcount-on-war-and-peace/https://cfocoder.com/posts/running-your-first-mapreduce-job-on-hadoop-wordcount-on-war-and-peace/In Part 1 of this series we installed Hadoop 3.3.6 natively on Ubuntu 24.04 and got HDFS running in pseudo-distributed mode. That gave us a working distributed file system, but Hadoop is much more than storage — its true power lies in processing large datasets in...Sun, 01 Mar 2026 00:00:00 GMTHadoopData EngineeringHadoophttps://cfocoder.com/posts/hadoop-3-3-6-on-ubuntu-native-installation-without-virtual-machine/https://cfocoder.com/posts/hadoop-3-3-6-on-ubuntu-native-installation-without-virtual-machine/When I started working with Hadoop in a learning environment, the course guide indicated using Linux Mint in a virtual machine. However, I already had Ubuntu 24.04 installed natively on my Dell Vostro with 32 GB of RAM, and it seemed smarter to leverage it directly. In...Mon, 23 Feb 2026 00:00:00 GMTHadoopData EngineeringHadoophttps://cfocoder.com/posts/personaplex-mastering-conversational-english-with-nvidia-and-runpod/https://cfocoder.com/posts/personaplex-mastering-conversational-english-with-nvidia-and-runpod/PersonaPlex: Mastering Conversational English with NVIDIA and RunPodSun, 15 Feb 2026 00:00:00 GMTRunPodGPUAIhttps://cfocoder.com/posts/maximizing-value-how-i-optimize-github-copilot-pro-and-anthropic-subscriptions-for-coding-and-research/https://cfocoder.com/posts/maximizing-value-how-i-optimize-github-copilot-pro-and-anthropic-subscriptions-for-coding-and-research/As a data scientist and developer, I rely on advanced LLMs (Large Language Models) like Claude Opus, Sonnet, GPT-4.1, and GPT-4o for both architectural planning and daily coding. But I quickly learned that the same model behaves differently depending on the platform—and...Tue, 20 Jan 2026 00:00:00 GMTAI CodingDeveloper ToolsAIhttps://cfocoder.com/posts/time-series-forecasting-with-exogenous-variables-sarimax-vs-prophet/https://cfocoder.com/posts/time-series-forecasting-with-exogenous-variables-sarimax-vs-prophet/Last quarter, I needed to forecast SMS volume for budget planning. The catch? Our SMS volume directly depends on how many locations we operate—and that number is also growing. I couldn’t just extrapolate historical trends; I needed a model that accounts for this external...Wed, 14 Jan 2026 00:00:00 GMTTime SeriesForecastingData Sciencehttps://cfocoder.com/posts/from-zero-to-hero-dbt-with-ibis-framework/https://cfocoder.com/posts/from-zero-to-hero-dbt-with-ibis-framework/A complete guide from dbt fundamentals to Python-powered transformationsMon, 12 Jan 2026 00:00:00 GMTdbtAnalytics EngineeringData Sciencehttps://cfocoder.com/posts/cypher-quick-reference-guide/https://cfocoder.com/posts/cypher-quick-reference-guide/A comprehensive quick reference for Cypher, the query language for graph databases. This guide focuses on Cypher syntax and patterns that work across Neo4j, Kuzu, and other graph databases supporting Cypher.Sun, 28 Dec 2025 00:00:00 GMTCypherGraph DatabasesData Sciencehttps://cfocoder.com/posts/cloud-powered-dictation-fast-stt-for-old-linux-hardware-with-copilot-claude/https://cfocoder.com/posts/cloud-powered-dictation-fast-stt-for-old-linux-hardware-with-copilot-claude/I work daily with GitHub Copilot and Claude Code, and like many developers, I often think faster than I type. Speech‑to‑Text (STT) is an obvious productivity multiplier — but there’s a catch:Tue, 23 Dec 2025 00:00:00 GMTAI CodingDeveloper ToolsCloudLinuxhttps://cfocoder.com/posts/setting-up-passwordless-ssh-across-all-machines-in-your-tailscale-network/https://cfocoder.com/posts/setting-up-passwordless-ssh-across-all-machines-in-your-tailscale-network/If you have multiple machines connected through Tailscale, you’ve probably found yourself typing SSH passwords repeatedly when jumping between systems. In this guide, I’ll show you how to set up passwordless SSH authentication across all your Tailscale machines, creating...Sat, 20 Dec 2025 00:00:00 GMTTailscaleNetworkingCloudhttps://cfocoder.com/posts/how-cloudflare-tunnel-became-a-game-changer-for-my-self-hosted-setup/https://cfocoder.com/posts/how-cloudflare-tunnel-became-a-game-changer-for-my-self-hosted-setup/The Problem: ISP Restrictions and Port BlockingMon, 15 Dec 2025 00:00:00 GMTCloudflareTunnelsCloudhttps://cfocoder.com/posts/runpod-the-cloud-gpu-solution-for-data-science-students/https://cfocoder.com/posts/runpod-the-cloud-gpu-solution-for-data-science-students/Is your laptop struggling to train Machine Learning models? Discover how RunPod can democratize your access to high-performance GPUs.Sat, 29 Nov 2025 00:00:00 GMTRunPodGPUAIhttps://cfocoder.com/posts/mastering-internal-networking-in-coolify-connecting-n8n-flowise-and-opensearch-like-a-pro/https://cfocoder.com/posts/mastering-internal-networking-in-coolify-connecting-n8n-flowise-and-opensearch-like-a-pro/If you run a self-hosted stack on Coolify (v4), you likely have powerful AI tools like n8n, Flowise, LangFlow, and OpenSearch running side-by-side. But there is a catch: out of the box, Coolify assigns them long, random container names like n8n-cs0gs0kogswgsgwk....Sat, 22 Nov 2025 00:00:00 GMTFlowiseLLM AppsAIhttps://cfocoder.com/posts/how-to-install-langflow-on-oracle-arm-ubuntu-using-coolify-the-proper-way/https://cfocoder.com/posts/how-to-install-langflow-on-oracle-arm-ubuntu-using-coolify-the-proper-way/Deploying AI tools like Langflow on self-hosted hardware (like the generous Oracle Cloud ARM Free Tier) gives you total control over your data and costs. While tools like Coolify make deployment easy, Langflow has a few quirks regarding data persistence and admin...Fri, 21 Nov 2025 00:00:00 GMTLangflowLLM AppsAIhttps://cfocoder.com/posts/self-hosting-a-vector-database-opensearch-on-oracle-arm-with-coolify/https://cfocoder.com/posts/self-hosting-a-vector-database-opensearch-on-oracle-arm-with-coolify/If you are building AI applications, RAG (Retrieval-Augmented Generation) pipelines, or just need a powerful search engine, you need a Vector Database. While services like Pinecone are great, they get expensive.Fri, 21 Nov 2025 00:00:00 GMTOpenSearchVector DatabasesAIhttps://cfocoder.com/posts/six-practical-ways-to-install-apps-on-ubuntu-beginner-friendly-guide/https://cfocoder.com/posts/six-practical-ways-to-install-apps-on-ubuntu-beginner-friendly-guide/Ubuntu offers several ways to install applications. Understanding each method helps you pick the right tool, avoid duplicates, and maintain a clean system. This guide covers six installation methods, includes Windows, iOS App Store, and Android Play Store analogies, plus...Sun, 16 Nov 2025 00:00:00 GMTUbuntuLinuxLinuxhttps://cfocoder.com/posts/running-local-notebooks-on-databricks-using-vs-code/https://cfocoder.com/posts/running-local-notebooks-on-databricks-using-vs-code/Execute Jupyter notebooks locally in VS Code while leveraging Databricks compute infrastructure. Your code runs on Databricks’ serverless compute, but you edit and manage files locally—giving you the best of both worlds: local development experience with cloud compute power.Tue, 11 Nov 2025 00:00:00 GMTDatabricksData EngineeringData Sciencehttps://cfocoder.com/posts/markmap-convert-markdown-to-interactive-mindmaps/https://cfocoder.com/posts/markmap-convert-markdown-to-interactive-mindmaps/Markmap is a simple yet powerful tool that transforms markdown files into interactive, visual mindmaps. It eliminates the need for complex mindmapping software—just write markdown, and Markmap handles the rest. The result is a beautiful, interactive HTML visualization...Sun, 09 Nov 2025 00:00:00 GMTMarkdownVisualizationData Sciencehttps://cfocoder.com/posts/deploying-mcpo-with-dockerfile-on-coolify/https://cfocoder.com/posts/deploying-mcpo-with-dockerfile-on-coolify/MCPO (Model Context Protocol OpenAPI Proxy) is a tool that exposes MCP server tools as OpenAPI endpoints, making them easy to integrate with platforms like Open WebUI. I previously wrote a detailed post on manual MCPO installation and configuration: 🚀 Installing and...Wed, 05 Nov 2025 00:00:00 GMTMCPAI ToolsAIhttps://cfocoder.com/posts/converting-the-mexican-constitution-pdf-to-markdown-with-docling/https://cfocoder.com/posts/converting-the-mexican-constitution-pdf-to-markdown-with-docling/This tutorial demonstrates how to use Docling to convert PDF documents to Markdown, JSON, and other formats. We’ll use the Mexican Constitution (Constitución Política de los Estados Unidos Mexicanos – CPEUM) as our practical case study.Sun, 02 Nov 2025 00:00:00 GMTDoclingDocument AIAIhttps://cfocoder.com/posts/docling-chunking-tutorial-preparing-documents-for-rag/https://cfocoder.com/posts/docling-chunking-tutorial-preparing-documents-for-rag/Docling Chunkers: Overview and ComparisonSun, 02 Nov 2025 00:00:00 GMTDoclingDocument AIAIhttps://cfocoder.com/posts/installing-coolify-on-an-oracle-arm-ubuntu-server/https://cfocoder.com/posts/installing-coolify-on-an-oracle-arm-ubuntu-server/Coolify is an open-source, self-hostable Platform-as-a-Service (PaaS)—think “Heroku/Vercel, but free on your own server”. Deploy applications, databases, and services with one click, automatic SSL, and Git integration, with zero monthly fees.Sun, 02 Nov 2025 00:00:00 GMTCoolifySelf-HostingLinuxhttps://cfocoder.com/posts/pm2-complete-reference-guide/https://cfocoder.com/posts/pm2-complete-reference-guide/PM2 is a production-grade process manager that helps you keep applications running continuously. While it was originally designed for Node.js applications, PM2 can manage any type of application or script including Python, Ruby, PHP, Bash scripts, and binary executables.Sun, 19 Oct 2025 00:00:00 GMTPM2Node.jsLinuxhttps://cfocoder.com/posts/complete-guide-installing-gurobi-optimizer-on-oracle-arm-ubuntu/https://cfocoder.com/posts/complete-guide-installing-gurobi-optimizer-on-oracle-arm-ubuntu/This guide will walk you through the complete process of installing Gurobi Optimizer with a Web License Service (WLS) license on an Oracle Cloud Infrastructure (OCI) server running Ubuntu on ARM64 architecture. It’s especially useful for graduate students in data science...Tue, 14 Oct 2025 00:00:00 GMTGurobiOptimizationOptimizationhttps://cfocoder.com/posts/latex-on-ubuntu-arm-quick-setup-reference-guide/https://cfocoder.com/posts/latex-on-ubuntu-arm-quick-setup-reference-guide/A streamlined guide to setting up LaTeX on Ubuntu ARM servers and using it with VS CodeSun, 12 Oct 2025 00:00:00 GMTLaTeXUbuntuData Sciencehttps://cfocoder.com/posts/exposing-local-projects-to-the-web-with-cloudflared-a-quick-guide/https://cfocoder.com/posts/exposing-local-projects-to-the-web-with-cloudflared-a-quick-guide/Ever needed to quickly share a local project with someone without deploying it? Cloudflared makes it incredibly easy to expose your local development server to the web temporarily. Whether you’re showing off a new feature, getting feedback on a design, or testing an API,...Fri, 12 Sep 2025 00:00:00 GMTCloudflareTunnelsLinuxhttps://cfocoder.com/posts/f09f9a80-installing-and-configuring-mcpo-for-open-webui-a-complete-guide/https://cfocoder.com/posts/f09f9a80-installing-and-configuring-mcpo-for-open-webui-a-complete-guide/Today I successfully set up MCPO (MCP-to-OpenAPI) to work seamlessly with Open WebUI, providing access to powerful external APIs through the Model Context Protocol. This post documents the entire process, scripts, and configuration needed for a smooth installation.Fri, 22 Aug 2025 00:00:00 GMTMCPAI ToolsAIhttps://cfocoder.com/posts/installing-anythingllm-on-oracle-arm-ubuntu-server/https://cfocoder.com/posts/installing-anythingllm-on-oracle-arm-ubuntu-server/A comprehensive guide for self-hosting AnythingLLM with Docker, Caddy, and OllamaMon, 18 Aug 2025 00:00:00 GMTAnythingLLMLLM AppsAIhttps://cfocoder.com/posts/building-your-first-mcp-server-a-journey-from-api-to-ai-assistant/https://cfocoder.com/posts/building-your-first-mcp-server-a-journey-from-api-to-ai-assistant/How I built a production-ready MCP server for Mexican economic data and what I learned along the waySun, 17 Aug 2025 00:00:00 GMTMCPAI ToolsAIhttps://cfocoder.com/posts/the-powerful-copy-command-in-duckdb-motherduck-a-quick-reference-guide/https://cfocoder.com/posts/the-powerful-copy-command-in-duckdb-motherduck-a-quick-reference-guide/The COPY command in DuckDB and MotherDuck is a versatile tool for importing and exporting data. This guide provides a concise overview of how to use COPY both from the DuckDB CLI (SQL only) and from Python, including workflows with Ibis and pandas. Use this as a quick...Tue, 08 Jul 2025 00:00:00 GMTDuckDBData EngineeringData SciencePythonSQLhttps://cfocoder.com/posts/building-a-complete-ducklake-solution-from-local-development-to-cloud-production/https://cfocoder.com/posts/building-a-complete-ducklake-solution-from-local-development-to-cloud-production/DuckLake is revolutionizing the lakehouse architecture by combining the simplicity of DuckDB with the power of modern data lake formats. In this comprehensive guide, I’ll walk you through building a complete DuckLake solution in two parts: first creating a local...Mon, 07 Jul 2025 00:00:00 GMTDuckLakeData EngineeringData ScienceSQLhttps://cfocoder.com/posts/a-sysadmins-tale-from-a-simple-sync-error-to-a-full-server-health-check/https://cfocoder.com/posts/a-sysadmins-tale-from-a-simple-sync-error-to-a-full-server-health-check/Updated with advanced techniques and lessons learned from multiple real-world storage crisesThu, 03 Jul 2025 00:00:00 GMTLinuxSelf-HostingLinuxhttps://cfocoder.com/posts/how-to-set-up-a-powerful-free-forever-server-on-oracle-cloud-caddy-edition/https://cfocoder.com/posts/how-to-set-up-a-powerful-free-forever-server-on-oracle-cloud-caddy-edition/Earlier in 2025, I signed up for Oracle’s “Free Forever” cloud offer. It was, and still is, one of the most generous free tiers available, especially for developers and hobbyists. I wrote a blog post to document my setup, and today I’m updating it with a more modern,...Thu, 03 Jul 2025 00:00:00 GMTCaddyReverse ProxyLinuxhttps://cfocoder.com/posts/the-ultimate-guide-to-installing-and-using-gemini-cli-on-windows-linux-and-vs-code/https://cfocoder.com/posts/the-ultimate-guide-to-installing-and-using-gemini-cli-on-windows-linux-and-vs-code/In the fast-paced world of software development, efficiency is everything. What if you could bring the power of a cutting-edge AI directly into your terminal, ready to answer questions, explain code, and generate commands without ever leaving your command line? That’s...Sat, 28 Jun 2025 00:00:00 GMTGemini CLIAI CodingAIhttps://cfocoder.com/posts/a-step-by-step-guide-to-installing-portainer-with-docker-and-caddy-on-an-arm-server/https://cfocoder.com/posts/a-step-by-step-guide-to-installing-portainer-with-docker-and-caddy-on-an-arm-server/Managing a server with multiple Docker applications can quickly become a juggling act of docker ps, docker logs, and docker-compose commands. While powerful, the command line isn’t always the most efficient way to get a high-level view of your services.Mon, 23 Jun 2025 00:00:00 GMTPortainerDockerLinuxhttps://cfocoder.com/posts/supercharging-your-cloud-server-management-mountain-duck-tailscale-arm-ubuntu-done-right/https://cfocoder.com/posts/supercharging-your-cloud-server-management-mountain-duck-tailscale-arm-ubuntu-done-right/Managing files on a remote server can sometimes feel like navigating a maze. Public IPs, firewalls, SSH keys – it’s a lot to keep track of. But what if I told you there’s a “super cool” way to get seamless, secure file access, even to your Oracle ARM Ubuntu server, all...Fri, 20 Jun 2025 00:00:00 GMTMountain DuckTailscaleLinuxhttps://cfocoder.com/posts/conquering-permission-denied-a-quick-guide-to-ubuntu-file-permissions/https://cfocoder.com/posts/conquering-permission-denied-a-quick-guide-to-ubuntu-file-permissions/Ever been in the middle of setting up a new project, run a command, and then BAM! You’re hit with the dreaded Permission denied (os error 13)? It’s a common stumbling block, especially when dealing with directories that might have been created by root or another user.Sun, 15 Jun 2025 00:00:00 GMTLinux PermissionsUbuntuLinuxhttps://cfocoder.com/posts/setting-up-ssh-keys-for-gitlab-and-github-a-complete-guide/https://cfocoder.com/posts/setting-up-ssh-keys-for-gitlab-and-github-a-complete-guide/As a developer, I prefer to use GitLab for my private projects and repositories due to its generous free tier for private repos, while using GitHub for public open-source projects where the community and visibility are unmatched. This dual-platform approach means I need...Fri, 13 Jun 2025 00:00:00 GMTSSHLinuxLinuxhttps://cfocoder.com/posts/unleash-the-power-of-symbolic-math-in-python-a-data-scientists-quick-guide-to-sympy/https://cfocoder.com/posts/unleash-the-power-of-symbolic-math-in-python-a-data-scientists-quick-guide-to-sympy/As a Data Science Masters student, I’m constantly working with mathematical concepts. From the calculus behind gradient descent to the linear algebra that powers PCA, math is the bedrock of everything we do. Recently, while tackling some homework, I stumbled upon a...Fri, 13 Jun 2025 00:00:00 GMTSymPyPythonData Sciencehttps://cfocoder.com/posts/deploying-flowise-on-a-secured-subdomain-with-caddy-docker-and-oracle-arm-vm/https://cfocoder.com/posts/deploying-flowise-on-a-secured-subdomain-with-caddy-docker-and-oracle-arm-vm/Introduction: Empowering Analysts and Automating with Flowise & n8nMon, 19 May 2025 00:00:00 GMTFlowiseLLM AppsCloudhttps://cfocoder.com/posts/title-self-hosting-supabase-on-oracle-arm-ubuntu-24-04-with-caddy-docker-compose-a-step-by-step-guide/https://cfocoder.com/posts/title-self-hosting-supabase-on-oracle-arm-ubuntu-24-04-with-caddy-docker-compose-a-step-by-step-guide/So, you’ve got a powerful Oracle Cloud ARM VM running Ubuntu 24.04, complete with SSL, Docker, and a Caddy reverse proxy neatly managing your subdomains. Your blog is humming along on the main domain, and now you want to add the awesome open-source Firebase alternative,...Sun, 18 May 2025 00:00:00 GMTSupabaseSelf-HostingCloudhttps://cfocoder.com/posts/my-ultimate-snowflake-quick-reference-guide/https://cfocoder.com/posts/my-ultimate-snowflake-quick-reference-guide/In today’s data-driven world, the ability to effectively store, process, and analyze vast amounts of information isn’t just an advantage – it’s a necessity. For years, organizations grappled with legacy data warehousing solutions that were often rigid, expensive, and...Wed, 07 May 2025 00:00:00 GMTSnowflakeSQLCloudhttps://cfocoder.com/posts/installing-mautic-6-on-oracle-arm-ubuntu-24-04-with-caddy-docker/https://cfocoder.com/posts/installing-mautic-6-on-oracle-arm-ubuntu-24-04-with-caddy-docker/Marketing automation is a powerful tool for businesses looking to nurture leads, engage customers, and streamline marketing efforts. Mautic stands out as a leading open-source marketing automation platform, offering a robust alternative to expensive proprietary solutions.Sat, 19 Apr 2025 00:00:00 GMTMauticMarketing AutomationLinuxhttps://cfocoder.com/posts/installing-nextcloud-on-oracle-arm-ubuntu-24-04-with-docker-and-caddy/https://cfocoder.com/posts/installing-nextcloud-on-oracle-arm-ubuntu-24-04-with-docker-and-caddy/In today’s data-driven world, managing files, collaborating securely, and maintaining control over your digital assets is paramount. Nextcloud is a powerful, open-source, self-hosted productivity platform that allows you to do just that. Think of it as your own private...Fri, 18 Apr 2025 00:00:00 GMTNextcloudSelf-HostingCloudhttps://cfocoder.com/posts/self-hosting-minio-s3-storage-on-a-mac-mini-with-docker-and-tailscale/https://cfocoder.com/posts/self-hosting-minio-s3-storage-on-a-mac-mini-with-docker-and-tailscale/Want your own private, S3-compatible object storage accessible securely from anywhere? Running MinIO on an always-on Mac Mini combined with Docker and Tailscale is a fantastic solution. This post walks you through setting it up, including navigating a common hurdle when...Fri, 18 Apr 2025 00:00:00 GMTMinIOObject StorageCloudhttps://cfocoder.com/posts/my-journey-taming-vpn-conflicts-and-securing-server-access-with-tailscale/https://cfocoder.com/posts/my-journey-taming-vpn-conflicts-and-securing-server-access-with-tailscale/Ever found yourself constantly connecting and disconnecting your regular VPN just to SSH into your own server? I certainly did. It was a daily annoyance: fire up the privacy VPN (like ProtonVPN in my case) for general browsing, then disconnect it because my server,...Tue, 15 Apr 2025 00:00:00 GMTTailscaleNetworkingLinuxhttps://cfocoder.com/posts/installing-redpanda-streaming-data-platform-on-oracle-arm-ubuntu-24-04-with-docker-and-caddy/https://cfocoder.com/posts/installing-redpanda-streaming-data-platform-on-oracle-arm-ubuntu-24-04-with-docker-and-caddy/Environment: Oracle Cloud ARM VM, Ubuntu 24.04, Docker, Caddy (non-Docker), CloudflareMon, 14 Apr 2025 00:00:00 GMTRedpandaStreamingLinuxhttps://cfocoder.com/posts/installing-apache-airflow-with-docker-and-caddy-on-oracle-arm-ubuntu-24-04/https://cfocoder.com/posts/installing-apache-airflow-with-docker-and-caddy-on-oracle-arm-ubuntu-24-04/Running data pipelines often requires a robust orchestrator like Apache Airflow. Setting it up on modern ARM-based cloud infrastructure, such as Oracle Cloud’s Ampere A1 instances, can be efficient and cost-effective. This guide walks you through installing Apache...Sun, 13 Apr 2025 00:00:00 GMTAirflowData OrchestrationLinuxhttps://cfocoder.com/posts/installing-self-hosted-airbyte-on-oracle-arm-ubuntu-24-04-with-caddy-cloudflare/https://cfocoder.com/posts/installing-self-hosted-airbyte-on-oracle-arm-ubuntu-24-04-with-caddy-cloudflare/Airbyte is a powerful open-source data integration platform, allowing you to sync data between various sources and destinations. Self-hosting Airbyte gives you full control over your data pipelines. This guide walks through installing Airbyte on an Oracle Cloud ARM...Tue, 08 Apr 2025 00:00:00 GMTAirbyteData IntegrationLinuxhttps://cfocoder.com/posts/self-hosting-chromadb-on-oracle-arm-ubuntu-with-docker-caddy-cloudflare/https://cfocoder.com/posts/self-hosting-chromadb-on-oracle-arm-ubuntu-with-docker-caddy-cloudflare/ChromaDB is a powerful open-source embedding database, essential for building AI applications involving semantic search, retrieval-augmented generation (RAG), and more. While Chroma offers a managed service, self-hosting provides greater control, privacy, and potentially...Tue, 08 Apr 2025 00:00:00 GMTChromaDBVector DatabasesLinuxhttps://cfocoder.com/posts/self-hosting-open-web-ui-on-oracle-arm-with-docker-and-caddy-private-setup/https://cfocoder.com/posts/self-hosting-open-web-ui-on-oracle-arm-with-docker-and-caddy-private-setup/Running your own Large Language Model (LLM) interface offers fantastic benefits like privacy, customization, and potentially lower costs compared to hosted services. Open Web UI is a popular, user-friendly interface for interacting with local LLMs managed by Ollama.Tue, 08 Apr 2025 00:00:00 GMTOpen WebUILLM AppsLinuxhttps://cfocoder.com/posts/the-self-hosted-power-trio-integrating-airflow-airbyte-and-n8n-for-ultimate-data-automation/https://cfocoder.com/posts/the-self-hosted-power-trio-integrating-airflow-airbyte-and-n8n-for-ultimate-data-automation/In today’s data-driven world, moving information, processing it, and acting upon insights are critical. But stitching together these processes can be complex. Thankfully, a powerful trio of open-source tools, when used together, can create incredibly robust and flexible...Tue, 08 Apr 2025 00:00:00 GMTAirflowData OrchestrationCloudhttps://cfocoder.com/posts/installing-matomo-analytics-with-docker-caddy-and-cloudflare-on-arm-ubuntu/https://cfocoder.com/posts/installing-matomo-analytics-with-docker-caddy-and-cloudflare-on-arm-ubuntu/Matomo is a powerful, open-source alternative to Google Analytics that gives you full ownership of your website’s traffic data. This guide walks through installing Matomo on its own subdomain using Docker Compose, Caddy as a reverse proxy, storing data on a separate...Mon, 07 Apr 2025 00:00:00 GMTMatomoAnalyticsLinuxhttps://cfocoder.com/posts/install-and-configure-docker-on-oracle-arm-ubuntu-24-04-optimize-storage/https://cfocoder.com/posts/install-and-configure-docker-on-oracle-arm-ubuntu-24-04-optimize-storage/Oracle Cloud Infrastructure (OCI) offers powerful and cost-effective ARM Ampere A1 instances. Running Ubuntu 24.04 LTS (“Noble Numbat”) on these instances is a popular choice. If you’re planning to use Docker, this guide will walk you through the official installation...Sun, 06 Apr 2025 00:00:00 GMTDockerContainersLinuxhttps://cfocoder.com/posts/install-wordpress-with-caddy-auto-ssl-on-oracle-arm-ubuntu-24-04-multi-site-ready/https://cfocoder.com/posts/install-wordpress-with-caddy-auto-ssl-on-oracle-arm-ubuntu-24-04-multi-site-ready/Setting up a WordPress blog or website on an efficient Oracle Cloud ARM instance is a great way to get performance on a budget. Combining it with the modern Caddy web server provides automatic HTTPS, simple configuration, and an excellent foundation for hosting multiple...Sat, 05 Apr 2025 00:00:00 GMTWordPressAstroLinuxhttps://cfocoder.com/posts/installing-qdrant-vector-database-on-oracle-arm-ubuntu-with-docker-caddy-cloudflare/https://cfocoder.com/posts/installing-qdrant-vector-database-on-oracle-arm-ubuntu-with-docker-caddy-cloudflare/This guide details how to install the Qdrant vector database on an Oracle Cloud Infrastructure (OCI) ARM Ampere VM running Ubuntu 24.04. We’ll use Docker Compose for easy management, Caddy as a secure reverse proxy with automatic SSL, and store Qdrant’s data on a...Sun, 30 Mar 2025 00:00:00 GMTQdrantVector DatabasesLinuxhttps://cfocoder.com/posts/avoiding-the-pitfalls-a-smoother-guide-to-restoring-oci-instances/https://cfocoder.com/posts/avoiding-the-pitfalls-a-smoother-guide-to-restoring-oci-instances/Restoring a virtual machine instance from a custom image or backup in Oracle Cloud Infrastructure (OCI) should be straightforward. You click a few buttons, and presto, your server is back, right? Well, as many of us discover, the reality can involve frustrating SSH...Sat, 29 Mar 2025 00:00:00 GMTLinuxSelf-HostingLinuxhttps://cfocoder.com/posts/hosting-wordpress-on-oracle-arm-ubuntu-24-04-nginx-certbot-root-domain-setup/https://cfocoder.com/posts/hosting-wordpress-on-oracle-arm-ubuntu-24-04-nginx-certbot-root-domain-setup/So you’ve snagged one of Oracle Cloud’s awesome “Always Free” Ampere A1 (ARM) Compute instances running Ubuntu 24.04 LTS. Fantastic! Now, you want to host a WordPress blog on your main domain (like yourdomain.com) and keep the door open for future web apps on subdomains...Fri, 28 Mar 2025 00:00:00 GMTWordPressAstroBloghttps://cfocoder.com/posts/running-your-own-ai-installing-ollama-on-ubuntu-arm-with-docker-and-caddy/https://cfocoder.com/posts/running-your-own-ai-installing-ollama-on-ubuntu-arm-with-docker-and-caddy/Self-hosting Large Language Models (LLMs) is becoming increasingly accessible, offering benefits like privacy, cost savings, and customization. Ollama makes it incredibly simple to run open-source models like Llama 3, Phi-3, Mistral, and more, right on your own hardware.Thu, 27 Mar 2025 00:00:00 GMTOllamaLLM AppsLinuxhttps://cfocoder.com/posts/installing-odoo-18-with-docker-compose-and-caddy-on-ubuntu-24-04-oracle-arm-the-easy-way-after-hitting-a-snag/https://cfocoder.com/posts/installing-odoo-18-with-docker-compose-and-caddy-on-ubuntu-24-04-oracle-arm-the-easy-way-after-hitting-a-snag/Odoo is a fantastic suite of open-source business apps, covering CRM, ERP, accounting, inventory, and more. Running it yourself gives you full control, and Docker makes the deployment process much smoother. This guide walks you through installing Odoo 18 Community...Wed, 26 Mar 2025 00:00:00 GMTOdooSelf-HostingCloudhttps://cfocoder.com/posts/guide-self-hosting-quickchart-on-arm-with-docker-local-build-caddy/https://cfocoder.com/posts/guide-self-hosting-quickchart-on-arm-with-docker-local-build-caddy/This guide provides step-by-step instructions to install a self-hosted QuickChart instance on an ARM-based server (like Oracle Cloud Ampere A1) running Ubuntu 24.04, using Docker Compose and Caddy.Sat, 22 Mar 2025 00:00:00 GMTQuickChartChartsData Sciencehttps://cfocoder.com/posts/adding-and-mounting-a-block-volume-in-ubuntu-with-systemd/https://cfocoder.com/posts/adding-and-mounting-a-block-volume-in-ubuntu-with-systemd/This guide explains how to add a new block storage volume (like an additional hard drive or a cloud-provided block storage device) to an Ubuntu system, format it, and mount it permanently. We’ll cover the steps for modern Ubuntu systems that use systemd, including the...Fri, 21 Mar 2025 00:00:00 GMTStorageUbuntuLinuxhttps://cfocoder.com/posts/installing-n8n-with-docker-compose-and-caddy-on-ubuntu/https://cfocoder.com/posts/installing-n8n-with-docker-compose-and-caddy-on-ubuntu/Workflow automation tools are incredibly powerful, and n8n is a fantastic open-source, self-hostable option. It allows you to connect various apps and services to automate tasks visually.Fri, 21 Mar 2025 00:00:00 GMTn8nAutomationLinuxhttps://cfocoder.com/posts/installing-openbb-platform-api-on-oracle-arm-ubuntu-24-04-with-docker-caddy/https://cfocoder.com/posts/installing-openbb-platform-api-on-oracle-arm-ubuntu-24-04-with-docker-caddy/OpenBB has evolved. While known for its powerful terminal and, previously, a self-hostable web application, the core of the self-hosted OpenBB Platform is now its robust set of API endpoints. This post will clarify what the current self-hosted OpenBB Platform offers, how...Thu, 20 Mar 2025 00:00:00 GMTCaddyReverse ProxyData Sciencehttps://cfocoder.com/posts/free-forever-oracle-virtual-private-server-vps/https://cfocoder.com/posts/free-forever-oracle-virtual-private-server-vps/I recently discovered a super cool offer from Oracle, to setup a free-forever Virtual Machine instance with an ARM processor, 4 OCPUs, 24 GB of RAM memory and 200 GB of storage. So this guide is to remind myself what settings I have to use to create a virtual machine...Mon, 17 Mar 2025 00:00:00 GMTLinuxSelf-HostingLinuxhttps://cfocoder.com/posts/time-series-forecasting/https://cfocoder.com/posts/time-series-forecasting/Time Series is a topic that I’m very passionate about, because for many years I have worked in the preparation of Forecasts and Budgets for Revenue, Expenses and Headcount in Excel, but so far, I have never seen the use of Time Series techniques at work, to this day,...Thu, 09 Jan 2025 00:00:00 GMTTime SeriesForecastingData Sciencehttps://cfocoder.com/posts/data-science-vs-ai-vs-data-engineering/https://cfocoder.com/posts/data-science-vs-ai-vs-data-engineering/I recently met with a group of colleagues from the accounting firm (KPMG), where I worked many years ago, and I found it hard to explain to them, what I do in the field of Data Science and what Artificial Intelligence is and is not, so after giving it a lot of thought, I...Fri, 06 Sep 2024 00:00:00 GMTData SciencePythonData Sciencehttps://cfocoder.com/posts/git-quick-reference-guide/https://cfocoder.com/posts/git-quick-reference-guide/This is a quick reference guide about Git so I can have it at hand. I took the data from the official documentation located at: https://git-scm.com/docsThu, 05 Sep 2024 00:00:00 GMTGitDeveloper ToolsData Sciencehttps://cfocoder.com/posts/azure-databricks-quick-reference-guide/https://cfocoder.com/posts/azure-databricks-quick-reference-guide/Databricks is an analytics and data engineering platform that sits on top of Spark, an analytics engine for big data processing and machine learning. Spark uses in-memory processing using a distributed computer platform of clusters that work as if they were a single one.Sat, 24 Feb 2024 00:00:00 GMTDatabricksData EngineeringData Sciencehttps://cfocoder.com/posts/python_practical_reference_guide/https://cfocoder.com/posts/python_practical_reference_guide/This is a Python reference guide that I wrote for myself, with code samples so I can remember how to write them. I embedded a Jupyter notebook inside this blog post to test them.Sun, 07 Jan 2024 00:00:00 GMTPythonData SciencePythonhttps://cfocoder.com/posts/kql-and-azure-data-explorer-reference-guide/https://cfocoder.com/posts/kql-and-azure-data-explorer-reference-guide/Recently I’ve been learning a new database query language, KQL which stands for “Kusto Query Language”. It is the language used by Azure Data Explorer, a tool in Microsoft’s Azure Cloud that helps query Kusto Databases. These databases run on server clusters so they are...Sat, 16 Dec 2023 00:00:00 GMTKQLAzure Data ExplorerSQLhttps://cfocoder.com/posts/advanced-sql-server-guide/https://cfocoder.com/posts/advanced-sql-server-guide/This is a short quick guide on advanced SQL Server topics, that I recently learned in this course from Udemy. The examples run in this post, use the AdventureWorks2019 sample database provided by Microsoft.Mon, 22 May 2023 00:00:00 GMTSQL ServerSQLSQLhttps://cfocoder.com/posts/sql-server-integration-services-ssis-guide/https://cfocoder.com/posts/sql-server-integration-services-ssis-guide/SQL Server Integration Services (SSIS) GuideFri, 16 Dec 2022 00:00:00 GMTSQL ServerSQLSQLhttps://cfocoder.com/posts/netstat-cheat-sheet/https://cfocoder.com/posts/netstat-cheat-sheet/Here is a quick cheat sheet about NetStat that I gathered from the video I share at the bottom of this post. NetStat is a very useful tool for managing system network connection ports among other things.Mon, 12 Dec 2022 00:00:00 GMTNetworkingLinuxLinuxhttps://cfocoder.com/posts/how-to-setup-an-azure-virtual-machine-for-python-development/https://cfocoder.com/posts/how-to-setup-an-azure-virtual-machine-for-python-development/As part of the Data Science course I’m currently studying in Tec de Monterrey, I learned how to do remote python development using Github Codespaces for free. I found this to be an eye-opener as it meant I could use Visual Studio Code for coding Python apps directly on a...Fri, 09 Dec 2022 00:00:00 GMTPythonData ScienceCloudhttps://cfocoder.com/posts/cloud-services-comparison-aws-vs-google-vs-azure/https://cfocoder.com/posts/cloud-services-comparison-aws-vs-google-vs-azure/This is a quick reference guide to compare the basic cloud services among the 3 top competitors, Microsoft Azure, Google Cloud Services, and Amazon AWS. This compilation was made based on two articles published by Microsoft, and the prices I was able to get in their...Mon, 24 Oct 2022 00:00:00 GMTCloudComparisonCloudhttps://cfocoder.com/posts/how-to-connect-to-an-amazon-ec2-virtual-machine-from-windows-10/https://cfocoder.com/posts/how-to-connect-to-an-amazon-ec2-virtual-machine-from-windows-10/Connecting to Amazon’s EC2 Virtual Machine from Linux is easy, as all we have to do is download the PEM key file into the project folder, change the permissions with the CHMOD command as in the example below, and then connect to the virtual machine from the terminal...Fri, 21 Oct 2022 00:00:00 GMTAWSCloudCloudhttps://cfocoder.com/posts/how-to-install-linux-ubuntu-on-linux/https://cfocoder.com/posts/how-to-install-linux-ubuntu-on-linux/I recently learned how to install Ubuntu on my Windows 10 laptop, not as a virtual machine, but as part of my normal Windows installation, so I have the advantage of not wasting resources dedicated to Ubuntu on a virtual machine.Wed, 19 Oct 2022 00:00:00 GMTUbuntuLinuxLinuxhttps://cfocoder.com/posts/docker-and-kubernetes-guide/https://cfocoder.com/posts/docker-and-kubernetes-guide/Additional parameters to run a containerSat, 01 Oct 2022 00:00:00 GMTDockerContainersCloudhttps://cfocoder.com/posts/guide-to-yaml/https://cfocoder.com/posts/guide-to-yaml/YAML is a data serialization language, which is very easy for a human to understand and is widely used in the configuration files of different applications.Fri, 30 Sep 2022 00:00:00 GMTYAMLConfigurationCloud