Hi HN, I built a Java library called SmartFileProcessor to make high-performance, multi-threaded file processing simpler and more maintainable.
Most Java file processing solutions either involve a lot of boilerplate or don’t handle concurrency, backpressure, or metrics well out of the box. I needed something fast, clean, and production-friendly — so I built this.
Key features:
Multi-threaded line/batch processing using a configurable thread pool
Producer/consumer model with built-in backpressure
Buffered, asynchronous writing with optional auto-flush
Live metrics: memory usage, throughput, thread times, queue stats
Simple builder API — minimal setup to get going
Output metrics to JSON, CSV, or human-readable format
Use cases:
Large CSV or log file parsing
ETL pre-processing
Line-by-line filtering and transformation
Batch preparation before ingestion
I’d really appreciate your feedback — feature ideas, performance improvements, critiques, or whether this solves a real problem for others. Thanks for checking it out!
Comments URL: https://news.ycombinator.com/item?id=44072788
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Article URL: https://arxiv.org/abs/2502.03382
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