Apache StormCrawler

Apache StormCrawler is an open-source SDK designed for building scalable, low-latency web crawlers using Apache Storm. It provides a modular and extensible framework with reusable components, enabling developers to create efficient and resilient crawlers tailored to real-time or large-scale data extraction needs.

Features

• Built on Apache Storm for distributed stream processing.
• Core modules for fetching, parsing, and indexing web content.
• Integration with external tools like Apache Tika for document parsing.
• Spouts and bolts for OpenSearch and other indexing backends.
• Support for sitemap parsing and URL frontier management.
• Maven archetype for quick project setup.
• Politeness enforcement via hostname partitioning.
• Local and cluster deployment modes.

Capabilities

• Real-time stream-based crawling and processing.
• Recursive crawling with low latency.
• Fault-tolerant and scalable architecture.
• Customizable topology for different crawling strategies.
• Efficient handling of redirects, errors, and content updates.
• Modular design for easy extension and integration.
• Suitable for both small-scale and enterprise-grade deployments.

Benefits

• Rapid development with ready-to-use components.
• High performance for time-sensitive data extraction.
• Flexibility to adapt to various crawling scenarios.
• Open-source and community-supported.
• Easy integration with existing data pipelines.
• Maintained and used in production by multiple organizations.
• Reduces complexity of building distributed crawlers from scratch.