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Original rewrites on React, Node.js, TypeScript and AI — practical notes from the same engineering practice behind our operator software. Article bodies are in English.
Tagged: routing
Cut LLM spend with a LiteLLM token router
LiteLLM sits between apps and providers, routing short prompts to cheap models and heavy ones to Opus—about 28% savings in a simulated engineer month.
586 wordsRead articleTyped Decision Models vs LLM Calls: Latency and Stability at the Boundary
A 240-call experiment comparing Jev's native probabilities with an LLM's self-reported ones, and how to turn that signal into a LangChain model router.
2630 wordsRead articleNext.js 16 Upgrade Traps: Parallel Route Defaults and middleware to proxy
Learn why Next.js 16 parallel route slots need a default.js, how to review a middleware.ts to proxy.ts move safely, and what to test before calling the upgrade done.
1342 wordsRead articlePricing a Typed Decision Router in Front of Frontier LLM Calls
How to model the expected cost of gating LLM traffic with a typed decision model like Jev, set confidence thresholds, and validate routing quality before you ship it.
2655 wordsRead articleA Single Source of Truth for Route Paths in Next.js Applications
Learn how a typed central routes module replaces scattered string paths in Next.js, with helper functions for dynamic segments and grouped route exports.
1222 wordsRead articleMigrating from next/router: Params, Shallow URLs and 404s in App Router
See how params, useParams, shallow URL updates, programmatic navigation and real 404 pages work in the Next.js App Router once next/router is gone.
1340 wordsRead article
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