scrapy-db

Similar to scrapy-redis, using the database as a queue, database-based scrapy components.

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Features

• Distributed crawling/scraping

  You can start multiple spider instances that share a single db queue. Best suitable for broad multi-domain crawls.

• Distributed post-processing

  Scraped items gets pushed into a DB queued meaning that you can start as many as needed post-processing processes sharing the items queue.

• Scrapy plug-and-play components

  Scheduler + Duplication Filter, Base Spiders.

Requirements

• Python 3.7+
• peewee >= 3.16.0
• Scrapy >= 2.7.0
• pymysql >= 1.0.3

Installation

From pip

pip install scrapy-db

From GitHub

git clone https://github.com/libra146/scrapy-db.git
cd scrapy-db
python setup.py install

From poetry

poetry add scrapy-db

If you are conducting distributed crawling tasks, scraper db is a very practical scraper component that can help you complete tasks more efficiently.

Use

Clone the current project and run the example crawler in example-project to experience it.

❗️Notice

This repository is still under development and may be unstable.

Why is there this library

Because I have a huge request pool, I don't have that much memory for redis to save it, so, I thought about database, I created it with reference to scrapy-redis and it works fine.