v0.1.30 - CPU Auto-Detection for Small VPS

🚀 CPU Auto-Detection for Small VPS

This release adds intelligent CPU detection to prevent overload on small VPS instances.

🔧 Key Changes

CPU Auto-Detection

• Automatically detects CPU cores and adjusts worker threads accordingly
• 1-2 cores → 1 worker thread (small VPS)
• 3-4 cores → 2 worker threads (medium system)
• 5+ cores → 4 worker threads (large system)

Concurrent Batch Optimization

• Auto-detects optimal concurrent API batch requests
• 1-2 cores → 1 concurrent batch (sequential processing)
• 3-4 cores → 2 concurrent batches
• 5+ cores → 3 concurrent batches

Cache Frequency Adjustment

• Reduced auto-reload frequency from 15s to 30s
• Better balance between freshness and CPU efficiency

Startup Logging

• Added detailed CPU configuration logging at startup
• Shows detected cores, worker threads, and concurrent batches

📊 Expected Impact on 2-Core VPS

Before:

• Worker threads: 8 (400% oversubscription)
• Concurrent batches: 3 per worker
• Auto-reload: Every 15s
• CPU usage: 100% constantly

After:

• Worker threads: 1 (optimal for 2 cores)
• Concurrent batches: 1 (sequential)
• Auto-reload: Every 30s
• CPU usage: 30-50% during sync periods, near 0% when idle

🔍 Technical Details

• Added num_cpus dependency for CPU detection
• Updated all workers (daily, slow, crypto) to use auto-detected configurations
• Changed default concurrent_batches from 3 → 1 (conservative fallback)

📝 Files Modified

• Cargo.toml: Add num_cpus dependency
• src/utils.rs: Add CPU detection helpers
• src/commands/serve.rs: Use auto-detected configuration + detailed logging
• src/commands/pull.rs: Use auto-detected concurrent batches
• src/services/data_store.rs: CACHE_TTL_SECONDS 15s → 30s
• src/models/sync_config.rs: Default concurrent_batches 3 → 1
• src/worker/*.rs: Use auto-detected concurrent batches

🚀 Deployment

The optimizations work automatically - no configuration needed. Check startup logs for detected configuration:

```
🔧 CPU Configuration (auto-detected):
💻 CPU cores detected: 2
🔧 Worker threads: 1
⚡ Concurrent batches: 1
```

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Full Changelog: v0.1.29...v0.1.30