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RAG in production

Name: DField Solutions
Address: Budapest, Budapest, Budapest, 1011, HU
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From LLM demo to production system · retrieval patterns, CI evals, guardrails, and cost control in one place.

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Notes from the studio.

22 April 2026 · AI solutions · Website & online shoppgvector at 10M+ rows · index choice, query patterns, real performance numberspgvector at 10M rows is not scary · if you pick the right index. HNSW vs IVFFlat, filter patterns, real numbers.
22 April 2026 · AI solutionsLLM prompt caching in production · a 60-80% cost cutPrompt caching is the single biggest LLM cost lever in 2026. 4 patterns, real savings numbers, 2 gotchas worth knowing.
22 April 2026 · AI solutions · CybersecurityAgentic AI · the safe tool-use pattern we ship by defaultAgentic AI that can send email and move money is not just a chatbot. Here's the safe tool-use pattern we ship.
22 April 2026 · Website & online shopPostgres migration · 5 mistakes that cost us weeksFive Postgres migration mistakes that burned weeks of our time. Here's the fix for each, and what we now do unconditionally.
22 April 2026 · AI solutionsLLM evals-as-code · the CI gate we run on every RAG deployAn eval that's not in CI is not an eval. Here's the evals-as-code workflow we run on every RAG project.
20 April 2026 · AI solutions · CybersecurityWhat an AI security audit actually checks in 2026AI security isn't a checkbox. Here's the nine-point audit we run on every LLM system we ship, plus which bugs turn up most often on systems we didn't build.
20 April 2026 · AI solutionsHow to ship a production AI chatbot in 14 daysFourteen days from zero to a live AI chatbot your company can actually use. The schedule we follow on every client project, down to what happens on each day.
18 April 2026 · AI solutions · CybersecurityLLM prompt injection playbook · the 2026 attack surfaceThe prompt injection surface is not a single bug · it's five categories, each with a distinct defence. Here's our playbook.
14 April 2026 · AI solutionsMCP (Model Context Protocol): what it means for LLM agentsMCP is the most important agent standard of the past year. What it means in practice, where we use it, and why to bet on it in 2026.
08 April 2026 · AI solutionsShipping AI agents that actually work in productionFrom demo to live system: the retrieval, eval, guardrails and cost control we run on every AI project we ship.
05 March 2026 · AI solutions · CybersecurityGDPR + AI: training on user data in 2026 · what's allowed, what isn't'We train on user data' · one sentence most startups drop without friction. In 2026 it opens a GDPR door. Here's the concrete checklist.
18 February 2026 · AI solutions · CybersecurityEU AI Act for SaaS: what you actually have to do in 2026AI Act is live. Who it affects, which tier you're in, deadlines · and the three things worth starting now.
22 January 2026 · AI solutions · Website & online shopPicking a vector DB in 2026: pgvector, Pinecone, WeaviateThree serious vector DBs, three very different DNA. Here's the decision framework that held up across our 2026 projects.

SHIPPED WORK

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