Function ingestion_stack 

pub fn ingestion_stack(
    path: PathBuf,
) -> Result<MetricsBlockStore<DedupBlockStore<BloomBlockStore<CachedBlockStore<SledBlockStore>>>>>

Create a high-throughput ingestion stack

Optimized for maximum write throughput:

• Deduplication for storage efficiency
• Smaller cache (200MB) to favor writes
• Bloom filter for fast existence checks
• Metrics for monitoring

Best for: Data ingestion pipelines, ETL processes, bulk imports