Show HN: Samchika – A Java Library for Fast, Multithreaded File Processing

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

Points: 19

# Comments: 13

https://github.com/MayankPratap/Samchika