Integrating Gemini TTS API into SwiftUI — Two AVAudioEngine Pitfalls I Hit
A practical guide to playing Gemini TTS API's raw PCM audio in SwiftUI using AVAudioEngine. Covers the two hidden pitfalls around PCM format handling and AVAudioSession timing that the official docs don't mention.
3 Gemini Code Execution Errors and How to Fix Them — Import Errors, Timeouts, and Empty Outputs
Fix the most common Gemini API Code Execution issues: missing tool configuration, unsupported library imports, and timeout errors. Includes working code examples for each fix.
Building an AdMob Revenue Anomaly Detector with Gemini API Function Calling
Learn how to build an automatic AdMob revenue anomaly detection system using Gemini API Function Calling — with real Python code, practical tips from 10+ years of indie app development, and Slack alerting integration.
Gemini File API Stuck in PROCESSING State: Timeout Handling and Retry Design
Fix Gemini File API files stuck in PROCESSING state. Learn proper polling with exponential backoff, timeout design, and cleanup strategies with working Python code examples.
Gemini API: RESOURCE_EXHAUSTED When Sending Large PDFs or Videos via inlineData — When to Switch to Files API
Why the Gemini API returns RESOURCE_EXHAUSTED for large PDFs or videos sent via inlineData, and a practical migration path to Files API based on real indie-developer experience.
What I Tried, In Order, When Gemini API Returned User location is not supported in Production
Hitting the Gemini API from Cloudflare Workers or Vercel and getting hit with a sudden 'User location is not supported' error? Here is the exact order I worked through, drawn from a live production incident on my own indie apps.
Gemini API Returns 400 When You Set tools and responseSchema Together — Three Designs That Make Function Calling and Structured Output Coexist
You want function calling to fetch external data and a strict JSON shape for the final answer. Setting tools and responseSchema together returns 400. Here's why, plus three production-tested designs that make both work.
Integrating Gemini API into iOS Widgets: Working Around WidgetKit's Execution Limits
Calling Gemini API directly from a WidgetKit TimelineProvider silently fails after release. Learn the App Groups caching pattern plus BGTaskScheduler refresh that keeps widgets fresh while cutting API calls to roughly one tenth, with field-tested numbers and a pre-release checklist.
Building a Paid Service with the Gemini Multimodal API: Image, Audio, and Video Processing
A complete implementation guide for paid services built on Gemini's multimodal capabilities — covering image analysis, audio transcription, video processing, PDF Q&A, Stripe Metered Billing integration, and production error handling.
Building a RAG Evaluation Framework with Gemini API: RAGAS, LLM-as-Judge, and Custom Metrics Production Masterclass
Complete guide to building a quantitative RAG evaluation framework using RAGAS, LLM-as-Judge with Gemini API, and custom domain metrics — including CI/CD integration and production monitoring.
Monetizing Content Production Services with Gemini 2.5 Flash's Low-Cost Advantage
A practical guide to building profitable content production services using Gemini 2.5 Flash's cost efficiency. Covers model routing between Flash and Pro, async batch processing design, and real revenue simulations.
Never Embed Your Gemini API Key in a Mobile App: Complete Multi-Layer Security Architecture with Firebase App Check
A production-grade guide to securing Gemini API access in mobile apps. Covers Firebase App Check, Cloud Functions proxy, rate limiting, and anomaly detection — with complete iOS and Android code examples.