https://shihub.online/blog Thoughts on AI agents, SaaS engineering, and distributed systems by Shihab Shahriar Antor. en Tue, 02 Jun 2026 22:10:23 GMT https://shihub.online/blog/building-letx https://shihub.online/blog/building-letx Tue, 02 Jun 2026 00:00:00 GMT I built LetX, a real-time collaborative LaTeX editor, using CRDTs for conflict-free editing and a sandboxed Docker compile pipeline. Here is the architecture. https://shihub.online/blog/building-quantumsketch https://shihub.online/blog/building-quantumsketch Mon, 01 Jun 2026 00:00:00 GMT QuantumSketch turns text prompts into narrated STEM animations using LLMs and ManimGL. Here is the pipeline that takes an idea to a finished video. https://shihub.online/blog/solo-founder-ai-stack https://shihub.online/blog/solo-founder-ai-stack Sat, 30 May 2026 00:00:00 GMT As a solo founder I run multiple products with AI coding agents, a shared skills layer and rigorous architecture. Here is the exact stack I use to ship. https://shihub.online/blog/building-bikroybuddy https://shihub.online/blog/building-bikroybuddy Thu, 28 May 2026 00:00:00 GMT BikroyBuddy is an AI shopping agent for Bangladesh that handles discovery and orders over chat, serving 5,000+ users. Here is how the architecture scaled. https://shihub.online/blog/building-bagh-language https://shihub.online/blog/building-bagh-language Mon, 25 May 2026 00:00:00 GMT Bagh is a Bangla-first programming language I designed that compiles to Python. Here is the compiler design and why a native language matters for coding education. https://shihub.online/blog/engineering-from-bangladesh https://shihub.online/blog/engineering-from-bangladesh Fri, 22 May 2026 00:00:00 GMT You can build global-class software from Dhaka. Here is what changes when your home is Bangladesh and your customers are global, and what gives you an edge. https://shihub.online/blog/claude-code-solo-founder https://shihub.online/blog/claude-code-solo-founder Wed, 20 May 2026 00:00:00 GMT I use Claude Code with a custom skills layer to plan, build, test and deploy across products. Here is my exact workflow and the skills I rely on. https://shihub.online/blog/building-context-heavy https://shihub.online/blog/building-context-heavy Mon, 18 May 2026 00:00:00 GMT Context-Heavy is a multi-tenant knowledge-graph API in Go (pgvector + recursive CTEs) that gives AI agents persistent context. Here is the architecture. https://shihub.online/blog/crdt-vs-ot https://shihub.online/blog/crdt-vs-ot Fri, 15 May 2026 00:00:00 GMT CRDTs and OT both enable real-time co-editing; CRDTs merge conflict-free without a central server while OT transforms operations. Here is the breakdown. https://shihub.online/blog/temporal-genai-workflows https://shihub.online/blog/temporal-genai-workflows Tue, 12 May 2026 00:00:00 GMT GenAI video and agent workflows take minutes. Temporal.io makes them durable and retryable. Here is how QuantumSketch uses Temporal end-to-end. https://shihub.online/blog/my-ai-agent-skills https://shihub.online/blog/my-ai-agent-skills Sun, 10 May 2026 00:00:00 GMT I maintain open-source skills that supercharge AI coding agents. softco, skill-builder, openrouter-free-infer and more. Here is the full stack. https://shihub.online/blog/solo-microservices https://shihub.online/blog/solo-microservices Fri, 08 May 2026 00:00:00 GMT Microservices for one engineer pay off when you have the right tooling: Go services, Terraform IaC, AWS ECS Fargate. Here is the exact pattern I use. https://shihub.online/blog/building-chessgoddess https://shihub.online/blog/building-chessgoddess Tue, 05 May 2026 00:00:00 GMT ChessGoddess analyzes games with Stockfish, explains moves with an LLM, and does image-to-FEN — deployed on AWS ECS. Here is the architecture. https://shihub.online/blog/seo-geo-aeo-2026 https://shihub.online/blog/seo-geo-aeo-2026 Sat, 02 May 2026 00:00:00 GMT GEO and AEO is still SEO with extra layers: answer-first content, dense structured data, and being in each AI engine's index. Here is the 2026 framework. https://shihub.online/blog/building-comikola https://shihub.online/blog/building-comikola Thu, 30 Apr 2026 00:00:00 GMT ComiKola generates Bangla comics end-to-end — scripting, character design, panel images — on a Go + React + Temporal stack. Here is the architecture. https://shihub.online/blog/engineering-principles https://shihub.online/blog/engineering-principles Tue, 28 Apr 2026 00:00:00 GMT I build by owning the whole problem — design, code, ship, operate — not just implementing specs. Here are the principles that shape how I work. https://shihub.online/blog/building-common-knowledge https://shihub.online/blog/building-common-knowledge Sat, 25 Apr 2026 00:00:00 GMT common-knowledge is a Git-backed memory store I built so AI coding agents keep context across sessions. Here is the design and why Git is the right backend. https://shihub.online/blog/exoplanet-detection-ml https://shihub.online/blog/exoplanet-detection-ml Wed, 22 Apr 2026 00:00:00 GMT My BRAC University research used contrastive learning (SimCLR, Siamese nets) to detect exoplanets in astronomical imagery, reaching 92% accuracy. Here is the approach. https://shihub.online/blog/cheap-always-on-ai-agent https://shihub.online/blog/cheap-always-on-ai-agent Sat, 18 Apr 2026 00:00:00 GMT Run a private always-on AI agent on AWS for about $17/month using free OpenRouter models and Terraform. Here is the exact recipe and cost breakdown. https://shihub.online/blog/tools-for-ai-coding-agents https://shihub.online/blog/tools-for-ai-coding-agents Wed, 15 Apr 2026 00:00:00 GMT I built a toolchain — skills, memory, free-LLM routing — that makes AI coding agents dramatically more capable. Here is the full set and what each enables. https://shihub.online/blog/building-offschool https://shihub.online/blog/building-offschool Sun, 12 Apr 2026 00:00:00 GMT offSchool builds personalized study plans with spaced repetition and knowledge graphs on a Next.js + Go + Python stack. Here is the architecture. https://shihub.online/blog/build-in-public-170-repos https://shihub.online/blog/build-in-public-170-repos Wed, 08 Apr 2026 00:00:00 GMT After 170+ public and private repos, here is what building in public taught me about scope, momentum and reuse — and what I would do differently. https://shihub.online/blog/scaling-ai-agent-kubernetes https://shihub.online/blog/scaling-ai-agent-kubernetes Sun, 05 Apr 2026 00:00:00 GMT Scaling a social-commerce AI agent to 300k+ users meant queueing, autoscaling on Kubernetes, and tight cost control. Here is the architecture that survived. https://shihub.online/blog/bagh-lang-open-source-community https://shihub.online/blog/bagh-lang-open-source-community Fri, 06 Feb 2026 00:00:00 GMT How we grew from a hackathon project to a national open source initiative. https://shihub.online/blog/bagh-lang-emerging-markets-coding https://shihub.online/blog/bagh-lang-emerging-markets-coding Thu, 05 Feb 2026 00:00:00 GMT Language shouldn't be a barrier to logic. How Bagh-lang is creating a new generation of programmers in Bangladesh. https://shihub.online/blog/letx-vs-overleaf-benchmark https://shihub.online/blog/letx-vs-overleaf-benchmark Wed, 04 Feb 2026 00:00:00 GMT We benchmarked LetX against the industry standard. The results? Local-first architecture wins on speed, latency, and reliability. https://shihub.online/blog/letx-scientific-writing-workflow https://shihub.online/blog/letx-scientific-writing-workflow Tue, 03 Feb 2026 00:00:00 GMT Academic writing hasn't changed in decades. LetX introduces cloud-native compilation and real-time collaboration to the research workflow. https://shihub.online/blog/quantumsketch-real-world-applications https://shihub.online/blog/quantumsketch-real-world-applications Mon, 02 Feb 2026 00:00:00 GMT From high school chemistry to YouTube edutainment, here is how QuantumSketch is visualizing the invisible. https://shihub.online/blog/quantumsketch-neuro-symbolic-vision https://shihub.online/blog/quantumsketch-neuro-symbolic-vision Sun, 01 Feb 2026 00:00:00 GMT Why we built a deterministic AI video engine in an era of hallucination. A founder's perspective on the future of STEM education. https://shihub.online/blog/localized-seo-edtech-bagh-lang https://shihub.online/blog/localized-seo-edtech-bagh-lang Sat, 31 Jan 2026 00:00:00 GMT Educational tools have unique discovery patterns. Here is how we optimized Bagh-lang for parents, teachers, and students in Bangladesh. https://shihub.online/blog/bagh-lang-democratizing-coding-bengali https://shihub.online/blog/bagh-lang-democratizing-coding-bengali Fri, 30 Jan 2026 00:00:00 GMT Bagh-lang is a Bengali-first programming language designed to remove language barriers from computer science education. It is not just a toy; it is a gateway to the future. https://shihub.online/blog/saas-growth-linkless-discovery-strategy https://shihub.online/blog/saas-growth-linkless-discovery-strategy Thu, 29 Jan 2026 00:00:00 GMT How do you grow a SaaS product when nobody clicks links anymore? A deep dive into the Entity SEO strategy behind LetX.app. https://shihub.online/blog/letx-next-gen-collaborative-latex-editor https://shihub.online/blog/letx-next-gen-collaborative-latex-editor Wed, 28 Jan 2026 00:00:00 GMT LetX is the modern, real-time alternative to Overleaf. Built by Shahriar Labs, it combines the power of LaTeX with the speed of local-first editing. https://shihub.online/blog/entity-seo-strategy-quantumsketch https://shihub.online/blog/entity-seo-strategy-quantumsketch Tue, 27 Jan 2026 00:00:00 GMT Traditional SEO is dead. Here is how we optimized QuantumSketch to be the primary answer for AI Overviews and LLM citations in 2026. https://shihub.online/blog/what-is-quantumsketch-neuro-symbolic-ai https://shihub.online/blog/what-is-quantumsketch-neuro-symbolic-ai Mon, 26 Jan 2026 00:00:00 GMT QuantumSketch is an advanced AI video engine that transforms text into high-fidelity STEM animations. Built by Shahriar Labs, it allows educators and creators to visualize complex physics and math concepts instantly. https://shihub.online/blog/letx-vs-overleaf-local-first-latex https://shihub.online/blog/letx-vs-overleaf-local-first-latex Tue, 20 Jan 2026 00:00:00 GMT Overleaf is the standard, but it's built on old web tech. LetX uses a custom CRDT engine and WebGL renderer to make LaTeX collaboration feel like a video game. https://shihub.online/blog/python-vs-go-ai-agents-benchmarks https://shihub.online/blog/python-vs-go-ai-agents-benchmarks Sat, 10 Jan 2026 00:00:00 GMT Python is the language of AI training. But for AI serving and orchestration layers? Go eats Python for lunch. Here are the benchmarks from migrating a high-throughput agent router. https://shihub.online/blog/advanced-rag-architecture-semantic-caching-knowledge-graphs https://shihub.online/blog/advanced-rag-architecture-semantic-caching-knowledge-graphs Fri, 02 Jan 2026 00:00:00 GMT Retrieval-Augmented Generation (RAG) is the 'Hello World' of AI systems. To build production-grade search that actually understands intent, you need GraphRAG and Semantic Caching. https://shihub.online/blog/beyond-wrapper-first-principles-engineering https://shihub.online/blog/beyond-wrapper-first-principles-engineering Fri, 05 Dec 2025 00:00:00 GMT Everyone is wrapping OpenAI and calling it a startup. True value comes from owning the physics of your software universe. A manifesto on deep tech. https://shihub.online/blog/saas-engineering-global-south-bangladesh https://shihub.online/blog/saas-engineering-global-south-bangladesh Thu, 20 Nov 2025 00:00:00 GMT Building for a global audience from a developing economy requires a different kind of engineering discipline. How we built high-margin SaaS using serverless scale and localized payments. https://shihub.online/blog/building-reliable-multi-agent-systems-python https://shihub.online/blog/building-reliable-multi-agent-systems-python Wed, 15 Oct 2025 00:00:00 GMT Autonomous agents often fail in production due to context pollution. Here is the exact 'Manager-Critic' architecture and Pydantic pattern I used to achieve 95% reliability.