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Solo Developer Guides: Backend and Tooling

#indiehackers6 posts tagged Indiehackers. Guides for solo developers running a product: background jobs, rate limiting, feature flags, bot protection, prompt versioning and time tracking. All posts

2026

Prompts as Code: How to Version, Test, and Ship the Prompt Layer in 2026May 20 · 14 minMost production AI features are still glueing prompts together with string concatenation in some random Node service. The prompt is the new SQL query and we are all writing it like it is 2003. Here is what treating the prompt layer like real source code looks like in 2026, the workflow that actually catches regressions before users do, and the part that surprised me most when I made the switch.Freelance Time Tracking: The Profit Leak Costing Solo Developers MoneyMay 19 · 14 minMost freelance developers I know are busy. Most of them also have no idea which clients are actually profitable. The gap between "billable hours on the invoice" and "hours the project actually ate" is where six-figure freelance careers quietly turn into $25-an-hour grinds. Here is the profit leak nobody warns you about, the math you should be running every Friday, and the workflow that closed mine.Vercel BotID: How the Invisible CAPTCHA Works and Where It Earns Its PlaceMay 18 · 17 minVercel BotID went GA in mid-2025 and quietly replaced the visible CAPTCHA on a lot of indie SaaS sites in 2026. The promise is real: invisible bot detection that catches headless Playwright sessions without making your real users squint at fire hydrants. The price is real too. Here is what BotID actually does under the hood, the Basic versus Deep Analysis tradeoff, the route patterns I protect with it, and the day a single AI scraper convinced me to wire it in front of an endpoint I thought was already safe.Background Jobs in Node.js for Indie Developers: When You Need a Queue (2026)May 16 · 17 minEvery job queue tutorial is written for companies running ten thousand jobs a second. As a solo developer you do not need Sidekiq Pro and a Kubernetes cluster to send a welcome email. Here is the actual background job setup that earns its place for indie projects in 2026, and the day a Stripe webhook taught me why setTimeout was never going to be enough.API Rate Limiting for SaaS in 2026: Algorithms, AI Scrapers, and a Layered DefenseMay 16 · 17 minA single AI agent scraped one of my endpoints twenty-three thousand times in a night and turned a $40 OpenAI budget into a $312 invoice before I woke up. Most rate limiting tutorials are written for traffic that pretends to be polite. Here is what actually defending a SaaS API looks like in 2026, with the AI bot wave already through the door.Feature Flags for Solo Developers in 2026: When You Need Them and What I UseMay 15 · 18 minEvery feature flag tool is pitched at companies with a hundred engineers. As a solo developer you do not need a $200 a month LaunchDarkly seat to ship safely. Here is the actual feature flag setup that earns its place for small teams and indie projects in 2026, and the moment you finally outgrow a config file.