#Laravel

Diagram of the RAG retrieval loop: six stages split into an offline indexing pipeline (crawl, chunk, embed, store) and an online query pipeline (retrieve, generate), with the loop closing back to re-crawl when content changes

AI & Automation

The Retrieval Loop

What RAG actually does, stage by stage, traced through ChatBotAi — a real Laravel chatbot that crawls a website, indexes it, and answers questions from the retrieved paragraphs alone.

Md Nasir WahidAug 19, 20266 min read

Plug-and-play payment gateway architecture diagram

Software delivery and engineering practice

Plug-and-Play Payments in Laravel: Interfaces, Factory & Tagging (bKash, Nagad, Rocket, EBL, SCB & more)

Stop hard-coding payment gateway logic in Laravel. A clean, testable pattern for wiring bKash, Nagad, Rocket, EBL, SCB, and more using interfaces, a factory, and container tagging.

Md Nasir WahidAug 19, 20262 min read