Architecture

8 articles

· 4 min read

"Global Standard" is a billing tier, not a failover plan

Azure OpenAI lost Sweden Central for six hours last week, then the gateways went in 18 regions. Microsoft's own docs say your global deployment dies with its primary region.

#azure#resilience#architecture

· 2 min read

Prompt caching is the only discount you control

Cache reads cost a tenth of normal input tokens. The math on when caching pays, when it doesn't, and the mistake that quietly doubles your write costs.

#cost#caching#api

· 1 min read

Structured outputs are API contracts, act like it

Schema-enforced output killed the regex parser. It did not kill the need to version, validate and monitor what your model returns.

#structured-outputs#api#reliability

· 4 min read

Your context window needs a budget, not a bigger limit

Million-token windows did not fix context rot, they subsidized it. How I split the window into line items and stopped my agents from getting dumber mid-task.

#context#agents#architecture

· 4 min read

Fine-tuning is the last resort and that's a compliment

The decision tree for prompting, RAG and fine-tuning, in the order your wallet prefers. Most teams asking about fine-tuning need a better prompt and a dataset they don't have.

#fine-tuning#models#cost