Programming articles from Sudo engineers: Java design patterns, Python, AI and data, and web development, with runnable code examples.
An LLM only produces text. To let it look up an order, calculate shipping or issue a refund, you have to give it a way to ask your application to do that, and the standard mechanism today is tool call...
An online shop starts with an orders table and one OrderService class that does everything. A year later, the admin screen needs to list orders with totals, the query that joins five tables runs slowl...
Getting the HTML from a crawler is only half the job. The other half is structured data extraction: turning a page into typed records you can load into a database or a report. The classic approach to...
You edit the prompt, change how chunks are split, swap the embedding model, and the chatbot "seems better". But better by how much, on which questions, and which questions are quietly getting worse? W...
Many order and payment systems still run on Spring Boot 2.7 with Java 8 or 11, because "if it works, don't touch it." Standing still has a price: security patches stop, new libraries drop support for...
The previous article ended on an uncomfortable number: out of 22 questions, 4 never got the right passage into the top 3. When the right passage is not in the prompt, the model makes things up or refu...
A Spring Boot project starts out clean: the controller calls a service, and the service calls a repository. Two years later, an @Entity shows up in the JSON response, a service imports HttpServletRequ...
A language model answers fluently about your store's return policy, but the "14 days" it quotes appears in none of your documents. That is why RAG (Retrieval-Augmented Generation) has become the defau...
After Embeddings and semantic search: sentence-transformers and FAISS, every project hits the same next question: where do the vectors live once the data grows, gets edited, gets deleted and has to be...
Most order systems we run into share the same symptom: classes like Order, Customer and Product are just bags of getters and setters, while every business rule is scattered across services. Money is a...
The search box on most websites still matches keywords: a customer types "drop my order" (the colloquial Vietnamese phrase), the system finds no such word in the article "How to cancel an order," and...
Every order admin screen has a filter block: status, date range, customer city, product code, minimum total. Users can pick any combination, and on the backend the code that builds the query often tur...
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