https://mobinshaterian.com/blogs Practical articles about Go, backend architecture, distributed systems, data engineering, and DevOps. en https://mobinshaterian.com/blog/Authentication---Authorization--RBAC--ReBAC--ABAC--and-PBAC-Explained-f3c6b95ad394 https://mobinshaterian.com/blog/Authentication---Authorization--RBAC--ReBAC--ABAC--and-PBAC-Explained-f3c6b95ad394 Wed, 22 Jul 2026 00:00:00 GMT From “who are you?” to “what can you do?” — a complete guide to modern access control models, with real examples using CASL, Keycloak, and… Security Architecture Node.js https://mobinshaterian.com/blog/Keycloak---OpenFGA--A-Practical-Integration-Guide-a9ed984ee205 https://mobinshaterian.com/blog/Keycloak---OpenFGA--A-Practical-Integration-Guide-a9ed984ee205 Mon, 20 Jul 2026 00:00:00 GMT Overview Security Architecture https://mobinshaterian.com/blog/Deploying-a-Lovable--TanStack-Start--App-with-GitHub-Actions---the-Real-Story-272he https://mobinshaterian.com/blog/Deploying-a-Lovable--TanStack-Start--App-with-GitHub-Actions---the-Real-Story-272he Sat, 18 Jul 2026 00:00:00 GMT Deploying a Lovable (TanStack Start) App with GitHub Actions — the Real Story Lovable is a great way to scaffold a TanStack Start app fast. But the moment you want to ship it yourself — on your own domain, through your… DevOps https://mobinshaterian.com/blog/How-Domain-Boundary-Violations-Slowly-Destroy-Your-Codebase-9cef4b11f8f1 https://mobinshaterian.com/blog/How-Domain-Boundary-Violations-Slowly-Destroy-Your-Codebase-9cef4b11f8f1 Sat, 18 Jul 2026 00:00:00 GMT Have you ever opened a “service” file and seen it reach deep into three or four other domains? Ever had to add a workaround like… Architecture https://mobinshaterian.com/blog/The-Entity-You-Modeled-Isn-t-the-Entity-That-Persists-vtwge https://mobinshaterian.com/blog/The-Entity-You-Modeled-Isn-t-the-Entity-That-Persists-vtwge Fri, 10 Jul 2026 00:00:00 GMT A recurring architectural mistake — and the state machine pattern that fixes it. A pattern you've probably seen before There's a particular kind of mess that shows up in almost every system that models a multi-stage bus… Architecture https://mobinshaterian.com/blog/One-Door--Two-Mechanisms--When-Your-Domain-Model-Quietly-Forks-Itself-oewde https://mobinshaterian.com/blog/One-Door--Two-Mechanisms--When-Your-Domain-Model-Quietly-Forks-Itself-oewde Wed, 08 Jul 2026 00:00:00 GMT I want to talk about a bug that, on the surface, looked trivial. An endpoint was missing. Architecture https://mobinshaterian.com/blog/Understanding-Server-Sent-Events--SSE---Architecture--Authentication--and-Testing-in-NestJS-oc5uf https://mobinshaterian.com/blog/Understanding-Server-Sent-Events--SSE---Architecture--Authentication--and-Testing-in-NestJS-oc5uf Fri, 26 Jun 2026 00:00:00 GMT Introduction Modern web applications often need real-time communication. Examples include: Notifications Chat applications Live dashboards Stock prices Progress tracking Monitoring systems Most developers immediately th… API Testing https://mobinshaterian.com/blog/When-Mediums-Bots-Fear-Your-Writing--Why-Im-Leaving-After-6-Years-and-200-Articles-anlqe https://mobinshaterian.com/blog/When-Mediums-Bots-Fear-Your-Writing--Why-Im-Leaving-After-6-Years-and-200-Articles-anlqe Thu, 25 Jun 2026 00:00:00 GMT Six years. Two hundred articles. Technical writing about software architecture, data pipelines, and the tools I work with every day. Career https://mobinshaterian.com/blog/What-Happens-When-You-Hire-a-Junior-Who-Vibe-Codes-as-a-Senior-Engineer-a047146d9ae9 https://mobinshaterian.com/blog/What-Happens-When-You-Hire-a-Junior-Who-Vibe-Codes-as-a-Senior-Engineer-a047146d9ae9 Wed, 24 Jun 2026 00:00:00 GMT On the difference between generating solutions and understanding problems Career https://mobinshaterian.com/blog/Rebuilding-the-Time-Machine--Designing-a-Dual-Purpose-Data-Versioning-System-for-Modern-Backends--c00ddf54bf53 https://mobinshaterian.com/blog/Rebuilding-the-Time-Machine--Designing-a-Dual-Purpose-Data-Versioning-System-for-Modern-Backends--c00ddf54bf53 Tue, 23 Jun 2026 00:00:00 GMT In traditional software engineering, databases are treated as state machines. When a user updates their profile, a transaction executes an… Career Machine Learning https://mobinshaterian.com/blog/The-New-Generation-of-E2E-Test-Automation--Capturing-Traffic-and-Bypassing-Auth-with-Postman-and--16f167e37950 https://mobinshaterian.com/blog/The-New-Generation-of-E2E-Test-Automation--Capturing-Traffic-and-Bypassing-Auth-with-Postman-and--16f167e37950 Mon, 22 Jun 2026 00:00:00 GMT End-to-End (E2E) testing ensures that your systems work cohesively, from the user interface down to the backend database. However, as… Security Testing https://mobinshaterian.com/blog/Serving-an-Offline-GraphQL-Playground-in-Go--Avoiding-the-Gin-Static-File-Pitfalls-dd907b2ab087 https://mobinshaterian.com/blog/Serving-an-Offline-GraphQL-Playground-in-Go--Avoiding-the-Gin-Static-File-Pitfalls-dd907b2ab087 Tue, 09 Jun 2026 00:00:00 GMT When building a GraphQL API in Go using gqlgen and Gin, the built-in playground.Handler is the standard way to serve the GraphiQL UI. Out… Go API GraphQL https://mobinshaterian.com/blog/Tunneling-TCP-Connections-Over-SSH-Using-socat-and-nc-fb142a2d6034 https://mobinshaterian.com/blog/Tunneling-TCP-Connections-Over-SSH-Using-socat-and-nc-fb142a2d6034 Mon, 08 Jun 2026 00:00:00 GMT The Problem https://mobinshaterian.com/blog/Real-Time-Data-Ingestion--Connecting-Distributed-Kafka-to-ClickHouse-in-Docker-1e29e0b0f665 https://mobinshaterian.com/blog/Real-Time-Data-Ingestion--Connecting-Distributed-Kafka-to-ClickHouse-in-Docker-1e29e0b0f665 Mon, 01 Jun 2026 00:00:00 GMT Building a high-throughput analytics pipeline requires a database that can ingest millions of rows per second and a message broker that can… Kafka ClickHouse Docker Performance https://mobinshaterian.com/blog/Integrating-Kafka-with-ClickHouse-using-SSL-SASL--A-Technical-Retrospective-be9d75864340 https://mobinshaterian.com/blog/Integrating-Kafka-with-ClickHouse-using-SSL-SASL--A-Technical-Retrospective-be9d75864340 Sat, 30 May 2026 00:00:00 GMT Integrating ClickHouse with a secured Kafka cluster often presents a challenge because of the strict separation between SQL-level settings… Kafka ClickHouse https://mobinshaterian.com/blog/ClickHouse-Tiered-Storage--Volumes--Storage-Policies--and-TTL-from-Scratch-to-Production-8758d8f3f066 https://mobinshaterian.com/blog/ClickHouse-Tiered-Storage--Volumes--Storage-Policies--and-TTL-from-Scratch-to-Production-8758d8f3f066 Sat, 30 May 2026 00:00:00 GMT Most ClickHouse deployments start simple: one server, one disk, one table. That works fine until the day you realise you are paying NVMe… ClickHouse https://mobinshaterian.com/blog/The-Test-Backdoor-Pattern--Safe-E2E-Automation-for-Hard-to-Test-Flows-8e5e234dc859 https://mobinshaterian.com/blog/The-Test-Backdoor-Pattern--Safe-E2E-Automation-for-Hard-to-Test-Flows-8e5e234dc859 Tue, 26 May 2026 00:00:00 GMT End-to-End (E2E) testing ensures that systems work cohesively from the user interface down to the database. However, modern security… Security Testing https://mobinshaterian.com/blog/How-We-Rebuilt-a-Telecom-KPI-Platform-to-Handle-Billions-of-Records--From-JSON-Blobs-to-Flat--1a4eb6b27574 https://mobinshaterian.com/blog/How-We-Rebuilt-a-Telecom-KPI-Platform-to-Handle-Billions-of-Records--From-JSON-Blobs-to-Flat--1a4eb6b27574 Tue, 26 May 2026 00:00:00 GMT Background Data Engineering https://mobinshaterian.com/blog/Architectural-Optimization-of-Shared-Sandbox-Deployments-in-GitLab-CI-CD-47ccce21fa9d https://mobinshaterian.com/blog/Architectural-Optimization-of-Shared-Sandbox-Deployments-in-GitLab-CI-CD-47ccce21fa9d Tue, 26 May 2026 00:00:00 GMT The shared sandbox deployment strategy provides high feedback velocity at a low cost by using a centralized development environment, yet it… DevOps Architecture Machine Learning https://mobinshaterian.com/blog/Building-a-High-Throughput-KPI-Pipeline-on-ClickHouse--Partitioning--Idempotent-Recalculation--and--3302a12ddf83 https://mobinshaterian.com/blog/Building-a-High-Throughput-KPI-Pipeline-on-ClickHouse--Partitioning--Idempotent-Recalculation--and--3302a12ddf83 Mon, 25 May 2026 00:00:00 GMT Every hour, 15 million rows of raw network measurement data land in our ClickHouse cluster. From that data we calculate per-cell… Star My Experience ClickHouse Performance Data Engineering https://mobinshaterian.com/blog/Solving-the--NaN--Deadlock--Streaming-Kafka-to-ClickHouse-with-Data-Sanitization-530ff573762f https://mobinshaterian.com/blog/Solving-the--NaN--Deadlock--Streaming-Kafka-to-ClickHouse-with-Data-Sanitization-530ff573762f Tue, 19 May 2026 00:00:00 GMT Integrating high-velocity streaming data into ClickHouse often feels like a “set it and forget it” task — until it isn’t. Recently, we… Kafka ClickHouse https://mobinshaterian.com/blog/Mastering-the-Manual--A-Guide-to-Manually-Installing-PostgreSQL-JDBC-Drivers-in-DBeaver-ac5c1507c94b https://mobinshaterian.com/blog/Mastering-the-Manual--A-Guide-to-Manually-Installing-PostgreSQL-JDBC-Drivers-in-DBeaver-ac5c1507c94b Mon, 04 May 2026 00:00:00 GMT In the world of database management, DBeaver is widely regarded as the “Swiss Army Knife” for developers and DBAs. While its automated… Postgres https://mobinshaterian.com/blog/A-Microservice-That-Teaches-Everything-Not-to-Do-e055f7480424 https://mobinshaterian.com/blog/A-Microservice-That-Teaches-Everything-Not-to-Do-e055f7480424 Sun, 03 May 2026 00:00:00 GMT Every engineer eventually encounters a system that becomes a living catalog of anti-patterns. Recently, I reviewed a microservice… Microservices Career https://mobinshaterian.com/blog/Connecting-Kafka-to-ClickHouse-with-SSL--A-Complete-Integration-Guide-e5a0a5957de3 https://mobinshaterian.com/blog/Connecting-Kafka-to-ClickHouse-with-SSL--A-Complete-Integration-Guide-e5a0a5957de3 Thu, 23 Apr 2026 00:00:00 GMT Setting up a production-ready data pipeline requires balancing high performance with rigorous security. When integrating ClickHouse with a… Kafka ClickHouse Performance Security https://mobinshaterian.com/blog/The--Clear-as-you-go--Pattern--Solving-Memory-Spikes-in-High-Volume-Go-Data-Pipelines-b40b3f7ce2d2 https://mobinshaterian.com/blog/The--Clear-as-you-go--Pattern--Solving-Memory-Spikes-in-High-Volume-Go-Data-Pipelines-b40b3f7ce2d2 Mon, 20 Apr 2026 00:00:00 GMT In the world of data engineering with Go, the OOMKilled (Exit Code 137) error is a common ghost in the machine. It often haunts developers… Go Data Engineering Career https://mobinshaterian.com/blog/Database-Seeder-Implementation-in-the-Go-Wordpress-project-b09ce0a4728d https://mobinshaterian.com/blog/Database-Seeder-Implementation-in-the-Go-Wordpress-project-b09ce0a4728d Mon, 23 Feb 2026 00:00:00 GMT Overview Go https://mobinshaterian.com/blog/Building-a-Category--Config---Product-Management-System-in-Go--A-Deep-Dive-5100ef95f814 https://mobinshaterian.com/blog/Building-a-Category--Config---Product-Management-System-in-Go--A-Deep-Dive-5100ef95f814 Sun, 22 Feb 2026 00:00:00 GMT Overview Go https://mobinshaterian.com/blog/Go-WordPress--A-Robust-Web-Scraping-Architecture-for-Product-Aggregation-e99de3f91bd5 https://mobinshaterian.com/blog/Go-WordPress--A-Robust-Web-Scraping-Architecture-for-Product-Aggregation-e99de3f91bd5 Sat, 14 Feb 2026 00:00:00 GMT Introduction Go Architecture https://mobinshaterian.com/blog/The--Phantom--403--Solving-Django-CSRF-Failures-in-Golang-Clients-83906f4770e8 https://mobinshaterian.com/blog/The--Phantom--403--Solving-Django-CSRF-Failures-in-Golang-Clients-83906f4770e8 Mon, 09 Feb 2026 00:00:00 GMT In the world of backend development, few things are as frustrating as an API that works the first time perfectly but fails mysteriously on… Go API https://mobinshaterian.com/blog/Bridging-Networks--Using-Nginx-as-a-Reverse-Proxy-for-Port-Redirection-b8e1f515b549 https://mobinshaterian.com/blog/Bridging-Networks--Using-Nginx-as-a-Reverse-Proxy-for-Port-Redirection-b8e1f515b549 Mon, 09 Feb 2026 00:00:00 GMT When managing distributed systems or local development environments, you often encounter a common networking hurdle: needing to access a… https://mobinshaterian.com/blog/How-to-Port-Forward-Traffic-to-a-Remote-IP-Using-Iptables-c3a8c10a6228 https://mobinshaterian.com/blog/How-to-Port-Forward-Traffic-to-a-Remote-IP-Using-Iptables-c3a8c10a6228 Mon, 02 Feb 2026 00:00:00 GMT In the world of networking, you often find yourself in a situation where a vital service — like a Swagger API dashboard — is hosted on a… API https://mobinshaterian.com/blog/Go-WordPress-Crawler--Advanced-Structural-Improvements-ec460d05c4f0 https://mobinshaterian.com/blog/Go-WordPress-Crawler--Advanced-Structural-Improvements-ec460d05c4f0 Mon, 02 Feb 2026 00:00:00 GMT A Deep Dive into Enhanced Web Scraping Architecture and Configuration Go Architecture https://mobinshaterian.com/blog/When-Authentication-Grows-Without-a-Plan--A-Hidden-Security-Risk-in-Legacy-Django-and-SPA-Systems-eeb172bc92a8 https://mobinshaterian.com/blog/When-Authentication-Grows-Without-a-Plan--A-Hidden-Security-Risk-in-Legacy-Django-and-SPA-Systems-eeb172bc92a8 Sat, 24 Jan 2026 00:00:00 GMT Modern web applications rarely start complex. A typical backend begins with session-based authentication, a frontend renders server-side… Security https://mobinshaterian.com/blog/Building-a-Safe--Parallel-WooCommerce-Crawler-in-Go-with-Colly-8786353b4b16 https://mobinshaterian.com/blog/Building-a-Safe--Parallel-WooCommerce-Crawler-in-Go-with-Colly-8786353b4b16 Wed, 07 Jan 2026 00:00:00 GMT Web crawling often starts simple: fetch a listing page, extract some fields, and move on. The complexity appears when you need to enrich… Go Machine Learning https://mobinshaterian.com/blog/Building-a-Go-Microservice-to-Crawl-WooCommerce-Products-3910d3b99f1d https://mobinshaterian.com/blog/Building-a-Go-Microservice-to-Crawl-WooCommerce-Products-3910d3b99f1d Tue, 06 Jan 2026 00:00:00 GMT In this project, we explored how to design and implement a Go‑based microservice that crawls products from a WooCommerce WordPress site. Go Microservices https://mobinshaterian.com/blog/Integrating-SQLC-and-GraphQL-in-Go--A-Practical-Example-with-Product-Filtering-4722e0a53179 https://mobinshaterian.com/blog/Integrating-SQLC-and-GraphQL-in-Go--A-Practical-Example-with-Product-Filtering-4722e0a53179 Tue, 30 Dec 2025 00:00:00 GMT GraphQL provides a powerful query language for clients, while SQLC generates type‑safe Go code directly from SQL queries Go GraphQL https://mobinshaterian.com/blog/Designing-a-Scalable-Poller-Dispatcher-Worker-Architecture-in-Go-eb5576116190 https://mobinshaterian.com/blog/Designing-a-Scalable-Poller-Dispatcher-Worker-Architecture-in-Go-eb5576116190 Tue, 30 Dec 2025 00:00:00 GMT This architecture establishes a production-grade job processing system in Go by decoupling logic into a Poller (decision-maker), Dispatcher Go Architecture Machine Learning https://mobinshaterian.com/blog/Combining-SQLC-and-GraphQL-in-Go-for-Type-Safe-APIs-0b77c1ae0249 https://mobinshaterian.com/blog/Combining-SQLC-and-GraphQL-in-Go-for-Type-Safe-APIs-0b77c1ae0249 Mon, 29 Dec 2025 00:00:00 GMT Modern backend development often requires balancing flexibility for clients with performance and safety in the data layer. Two powerful… Go GraphQL Performance https://mobinshaterian.com/blog/Database-Migration-Mismatch--The--Hash-Client-Secret--Error-in-Django-OAuth---db8fc9a511c7 https://mobinshaterian.com/blog/Database-Migration-Mismatch--The--Hash-Client-Secret--Error-in-Django-OAuth---db8fc9a511c7 Fri, 26 Dec 2025 00:00:00 GMT The error message django.db.utils.ProgrammingError: column oauth2_provider_application.hash_client_secret does not exist is a classic… Security https://mobinshaterian.com/blog/Building-a-GraphQL-API-in-Go-with-Custom-Scalars-0b1a1b3e52f9 https://mobinshaterian.com/blog/Building-a-GraphQL-API-in-Go-with-Custom-Scalars-0b1a1b3e52f9 Fri, 26 Dec 2025 00:00:00 GMT GraphQL has become a powerful alternative to REST APIs, offering clients the ability to request exactly the data they need. In Go, the… Go API GraphQL https://mobinshaterian.com/blog/Successfully-Migrating-from-a-Monolith-to-Microservices-with-a-Technical-Debt-Approach-aa08d713deec https://mobinshaterian.com/blog/Successfully-Migrating-from-a-Monolith-to-Microservices-with-a-Technical-Debt-Approach-aa08d713deec Tue, 23 Dec 2025 00:00:00 GMT Deciding to migrate from a large, aging monolithic system to a microservices architecture is often a reactive response to… Microservices Architecture https://mobinshaterian.com/blog/Complete-Guide--Migrating-from-REST---gRPC-to-GraphQL-in-Go-96c53025d9dc https://mobinshaterian.com/blog/Complete-Guide--Migrating-from-REST---gRPC-to-GraphQL-in-Go-96c53025d9dc Sun, 14 Dec 2025 00:00:00 GMT we’ll walk through the complete process of migrating a Go application from a REST API with gRPC to a modern GraphQL Go base Go API gRPC GraphQL https://mobinshaterian.com/blog/Adding-ClickHouse-to-a-Go-Project--A-Practical-Guide-Inspired-by-go-simple-5a4cfef93e41 https://mobinshaterian.com/blog/Adding-ClickHouse-to-a-Go-Project--A-Practical-Guide-Inspired-by-go-simple-5a4cfef93e41 Sun, 14 Dec 2025 00:00:00 GMT ClickHouse has become a favorite for developers who need fast analytical queries, real‑time inserts, and effortless scalability. But… Go ClickHouse https://mobinshaterian.com/blog/Building-a-Complete-Kafka---ClickHouse-Streaming-Stack-with-Docker-Compose-98cbfc4bbf0c https://mobinshaterian.com/blog/Building-a-Complete-Kafka---ClickHouse-Streaming-Stack-with-Docker-Compose-98cbfc4bbf0c Sun, 07 Dec 2025 00:00:00 GMT The article demonstrates building a complete, reproducible real-time data streaming and analytics stack using Kafka and ClickHouse. Kafka ClickHouse Docker https://mobinshaterian.com/blog/Rsync-from-One-Origin-to-Multiple-Destinations--Strategies-and-Solutions----30fb79b4164d https://mobinshaterian.com/blog/Rsync-from-One-Origin-to-Multiple-Destinations--Strategies-and-Solutions----30fb79b4164d Wed, 03 Dec 2025 00:00:00 GMT Scale one-to-many rsync using a concurrent fan-out script or a staged mirroring hierarchy to ensure speed and consistency. Performance https://mobinshaterian.com/blog/Preventing-Race-Conditions-in-Kubernetes-Applications-with-Redis-Locks-7da00ec8c8dd https://mobinshaterian.com/blog/Preventing-Race-Conditions-in-Kubernetes-Applications-with-Redis-Locks-7da00ec8c8dd Wed, 03 Dec 2025 00:00:00 GMT Redis provides a distributed lock for Kubernetes to manage concurrency and prevent race conditions in scheduled tasks. Redis Kubernetes https://mobinshaterian.com/blog/Eliminating-Code-Duplication-in-Go-with-go-generate--A-Practical-Guide-13d40dfa6df1 https://mobinshaterian.com/blog/Eliminating-Code-Duplication-in-Go-with-go-generate--A-Practical-Guide-13d40dfa6df1 Tue, 02 Dec 2025 00:00:00 GMT When building data-intensive applications in Go, you often find yourself writing repetitive boilerplate code. Go https://mobinshaterian.com/blog/Getting-Started-with-Docker-files--A-Complete-Guide-d1d5b2d44d1b https://mobinshaterian.com/blog/Getting-Started-with-Docker-files--A-Complete-Guide-d1d5b2d44d1b Mon, 01 Dec 2025 00:00:00 GMT Docker has revolutionized how developers build, ship, and run applications Docker https://mobinshaterian.com/blog/Atomic-Deployment-of-Go-Binaries-on-Ubuntu-with-Cron-dd7cf94cd8ab https://mobinshaterian.com/blog/Atomic-Deployment-of-Go-Binaries-on-Ubuntu-with-Cron-dd7cf94cd8ab Wed, 26 Nov 2025 00:00:00 GMT This article presents a production-ready deployment strategy for Go applications on Ubuntu servers using GitLab CI/CD and cron scheduling. Go Linux DevOps Machine Learning https://mobinshaterian.com/blog/PostgreSQL-Foreign-Data-Wrappers-for-Data-Federation-7043c561f218 https://mobinshaterian.com/blog/PostgreSQL-Foreign-Data-Wrappers-for-Data-Federation-7043c561f218 Sat, 22 Nov 2025 00:00:00 GMT Foreign Data Wrappers (FDWs) are a powerful feature in PostgreSQL that enables the database to act as a federated data hub ,… Postgres