An LLM gateway is failure handling on one request path: routing, retries, a circuit breaker, streaming fallbacks and per-tenant budgets, with a FastAPI gateway you can run and the numbers its tests measured.
Six rate limiting algorithms run through the same 100-a-minute limit and the same traffic, with what each let through, what it costs in Redis, and atomic Lua code for Python.
A timeout can’t tell you whether the card was charged, so an idempotency key lets the retry get the original result back instead of charging twice.
px.imshow keeps every cell square by default, so a wide matrix becomes a thin strip. One argument fixes it, and here is what else to know about size, zoom and go.Heatmap.
Most prompt engineering advice was written for models that no longer exist. Here’s what still works.
How multiple AI agents team up to solve problems no single LLM can handle.
A complete walkthrough of the ReAct pattern teaching LLMs to reason and act with LangChain.
Turn messy datasets into clear, compelling charts with Python’s three most powerful libraries.
Ditch print() for good — IceCream makes Python debugging faster and far less painful.
Slow loops are killing your code; here are the faster, cleaner ways to transform data.