API Integration

Overview

The Crypto Price Alarm integrates with external APIs to fetch real-time cryptocurrency price data. This section documents the API integration strategy, polling mechanisms, and technical implementation details.

CoinGecko: Primary Data Source

All price data is sourced from CoinGecko’s free public API, which provides:

No Authentication: No API keys required
Comprehensive Coverage: 10,000+ cryptocurrencies
Reliable Uptime: Industry-standard availability
Free Tier: 50 calls/minute (sufficient for most use cases)

Key Topics

Polling Architecture

15-second update intervals
Background job scheduling
Efficient batching strategies

Price Calculation

Stablecoin pairs (BTCUSDT, ETHUSDC)
Crypto-to-crypto pairs (ETHBTC, BNBETH)
Ratio calculations and USD proxies

Rate Limiting & Resilience

Error handling and retry logic
Exponential backoff strategies
Network failure recovery

Performance Optimization

Request batching for multiple pairs
In-memory caching (15s TTL)
Latency monitoring

Next Steps

Dive into the CoinGecko Integration documentation for complete implementation details.