Circuit Breaker

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Gemini AI Production-Grade Integration: Four-Layer Circuit Breaker Degradation and Triple Quota Control

An in-depth analysis of the production-grade encapsulation of @google-cloud/vertexai (Gemini 2.5 Flash) in a NestJS project, covering core implementations such as a four-layer service level degradation system, triple quota control, circuit breaker pattern, and exponential backoff retry.

Backend Development

AI Multi-Provider Abstraction Layer: Unified Access and Automatic Failover for Gemini + Groq + DeepSeek

The JoyMini API's AI service has evolved from a single Gemini Provider to a multi-Provider abstraction architecture, supporting unified access, automatic failover, Provider-level key rotation, and Admin UI visual configuration for three AI providers: Gemini, Groq, and DeepSeek.

Interface Management

AI Service Migration: Vertex AI to Google AI Studio — Cost Control and Multi-Key Rotation

JoyMini API migrates AI services from Vertex AI (pay-as-you-go) to Google AI Studio (free tier), covering the complete migration story including multi-key rotation, circuit breaker degradation, rate limiting, and cost comparison.

Interface Management

AI-Driven Translation Engine: Google AI Studio Gemini Multi-Layer Elastic Architecture

JoyMini API's AI translation engine is built on Google AI Studio Gemini, encompassing multi-layer elastic patterns such as rate limiting, service level degradation, circuit breaker, exponential backoff retry, and special 429 handling, supporting batch translation, comment moderation, and auto-reply scenarios.

Interface Management