... Query Optimization: Replaced heavy nested SQL queries with indexed lookups, reducing response time from ~320ms to under 45ms. 3. Asynchronous Task Queue: Moved non-essential tasks (like sending welcome emails or triggering notifications) to background workers using Celery. This simple optimization not only handled 5x higher concurrent users during stress tests but also cut our estimated monthly infrastructure costs significantly. For fellow tech builders and founders: What is your go-to database optimization technique before going live on Product Hunt ...

... degree. No bootcamp. Just YouTube tutorials, Stack Overflow at 2am, and a lot of stubbornness. Over the last year I built a full SaaS completely alone Flask backend, PostgreSQL, Redis, Celery workers, OpenAI integration, YouTube API OAuth, payment webhooks, the whole thing. Every bug was a lesson. Every deployment that crashed taught me something the tutorials never mentioned. I'm launching soon and honestly terrified but also proud of how far self-education can take you if you're consistent ...

... degree. No bootcamp. Just YouTube tutorials, Stack Overflow at 2am, and a lot of stubbornness. Over the last year I built a full SaaS completely alone Flask backend, PostgreSQL, Redis, Celery workers, OpenAI integration, YouTube API OAuth, payment webhooks, the whole thing. Every bug was a lesson. Every deployment that crashed taught me something the tutorials never mentioned. I'm launching soon and honestly terrified but also proud of how far self-education can take you if you're consistent ...

... talk about your process in building it! Comment from Rise-n-Shine Software(@risenshine): I'm building lightPDF , a high-performance, minimalist document viewer for the desktop. The main goal is to create a fast, lightweight, and privacy-respecting alternative to bloated applications like Adobe Acrobat. It's an "offline-first" app, meaning it processes all your files locally on your machine without sending them to the cloud. Here s a breakdown of the technology stack I'm using ... ... auth its just device id stored in keychain no accounts needed which keeps onboarding super minimal biggest challenge has been text extraction different sites block scrapers differently. revenucat for subscriptions has been great tbh, saves a ton of time vs

... tools How you connect them What you re shipping Let s crowd-source the best combos for 2026. Maybe we catch the next trend early. Comment from Simona O'Neill(@simona_o_neill3): Currently , only ChatGPT & Codex in VS Code plus Vercel. I did use Claude initially to get the core structure of my app, but got really fed up with constant syntax errors so dropped it. I just launched my first solo built/ vibe coded app - 70Lives Beauty ... ... plan), and use ChatGPT (Plus) for small tasks and concepts. I have tried Jules but that did not really work for me, as my environment couldn't run on the instances (Django with Posgres, Redis, Celery