Announcement
Colly: Elegant Scraper and Crawler Framework for Golang
Colly is a fast and elegant Go library for web scraping and crawling, providing a clean interface and handling complexity like concurrency, distributed scraping, and session management.
Project Introduction
Summary
Colly is an open-source Go library designed to make web scraping and crawling easy, fast, and scalable. It offers a clean API for developers to define how to visit pages and extract data.
Problem Solved
Building web scrapers from scratch in Go can be complex, requiring handling of concurrent requests, error management, session states, and politeness towards target sites. Colly abstracts these complexities, allowing developers to focus on data extraction.
Core Features
Event-Driven Architecture
Provides a simple, event-driven API for building scraping logic.
Distributed Scraping Support
Supports distributed scraping by coordinating multiple instances.
Session and Cookie Management
Handles cookies, sessions, redirects, and maintains order of requests.
Crawler Etiquette Features
Built-in mechanisms for rate limiting, random user agents, and request delays.
Tech Stack
使用场景
Colly is suitable for a wide range of web data collection and automation tasks, including but not limited to:
E-commerce Data Collection
Details
Automatically collecting product information, prices, and reviews from e-commerce websites for market analysis or competitive monitoring.
User Value
Gain competitive insights and automate market data aggregation.
Content Monitoring and Aggregation
Details
Building tools to monitor news websites, blogs, or social media for specific keywords or updates.
User Value
Stay informed on relevant topics or build content aggregation services.
Academic Research Data Gathering
Details
Gathering data from public websites for academic research, such as collecting public records or large text corpora.
User Value
Efficiently collect data needed for studies without manual effort.
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