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Next.js 15 guides for self-hosted AI SaaS: Docker, Caddy, Auth.js, Stripe, LangGraph, pgvector, and Hetzner cost.

21 posts · page 1 of 4

• 29 Oct 2026 · Hardening & Ops

  Self-Hosting a Next.js 15 AI SaaS, Architecture and Cost

  Serverless limits vs a 4.50 euro Hetzner VPS, unit costs at 1k to 50k MAU, and when a starter kit beats wiring Stripe and Caddy yourself.

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• 28 Oct 2026 · Hardening & Ops

  Serverless vs a VPS for AI SaaS, Real Cost at 25,000 MAU

  Why Vercel duration caps and streaming egress hurt an AI product at 25k MAU, and what a Hetzner Docker box costs for the same workload.

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• 28 Oct 2026 · LangGraph & Agents

  Tool Calling with the Vercel AI SDK in Next.js 15

  Dynamic model routing across OpenAI and Anthropic, tools the model can call, and the same client stream you already use for chat.

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• 28 Oct 2026 · Docker & Infra

  Terraform for Hetzner Cloud, Provisioning Next.js and Docker from Code

  How to create a VPS, firewall, and cloud-init that installs Docker Compose so a Next.js 15 app boots without clicking through the Hetzner UI.

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• 28 Oct 2026 · LangGraph & Agents

  Fixing SSE Connection Drops Behind Reverse Proxies for LLM Chains

  Why LangGraph streams die at 60s or 100s on NGINX, Cloudflare, and idle timeouts, and which timeouts to raise after you already disabled buffering.

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• 28 Oct 2026 · Postgres & pgvector

  Self-Hosted AI SaaS Stack: Next.js 15, LangGraph & pgvector

  The production layers for a self-hosted AI SaaS, from Auth.js and Stripe up to Caddy and Terraform, with links to the deep-dive posts and the $149 Pro pack.

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