Change Log

This page serves to document any changes made between releases.

Scrapy Cluster 1.2.1

Date: 01/19/2018

  • Fixes unit test syntax for link spider
  • Fixes docker version upgrade on Travis for continuous integration tests

Scrapy Cluster 1.2

Date: 03/29/2017

  • Added Coveralls code coverage integration
  • Added full stack offline unit tests and online integration testing in Travis CI
  • Upgraded all components to newest Python packages
  • Switched example Virtual Machine from Miniconda to Virtualenv
  • Add setting to specify Redis db across all components
  • Docker support
  • Improved RedisThrottledQueue implementation to allow for rubber band catch up while under moderation
  • Added support for Centos and Ubuntu Virtual Machines

Kafka Monitor Changes

  • Updated stats schema to accept queue, rest statistics requests.
  • Added plugin API for managing Zookeeper domain configuration
  • Added ability to scale horizontally with multiple processes for redundancy

Redis Monitor Changes

  • Added close() method to plugin base class for clean shutdown
  • Added queue statistics response object
  • Added plugin for executing Zookeeper configuration updates
  • Added ability to scale horizontally with multiple processes for redundancy
  • New limited retry ability for failed actions

Crawler Changes

  • Added ability to control cluster wide blacklists via Zookeeper
  • Improved memory management in scheduler for domain based queues
  • Added two new spider middlewares for stats collection and meta field passthrough
  • Removed excess pipeline middleware

Rest Service

  • New component that allows for restful integration with Scrapy Cluster

Scrapy Cluster 1.1

Date: 02/23/2016

  • Added domain based queue mechanism for better management and control across all components of the cluster
  • Added easy offline bash script for running all offline tests
  • Added online bash test script for testing if your cluster is integrated with all other external components
  • New Vagrant virtual machine for easier development and testing.
  • Modified demo incoming kafka topic from demo.incoming_urls to just demo.incoming as now all crawl/info/stop requests are serviced through a single topic
  • Added new scutils package for accessing modules across different components.
  • Added scutils documentation
  • Added significantly more documentation and improved layout
  • Created new elk folder for sample Elasticsearch, Logstash, Kibana integration

Kafka Monitor Changes

  • Condensed the Crawler and Actions monitor into a single script
  • Renamed to for better PEP 8 standards
  • Added plugin functionality for easier extension creation
  • Improved kafka topic dump utility
  • Added both offline and online unit tests
  • Improved logging
  • Added defaults to scraper_schema.json
  • Added Stats Collection and interface for retrieving stats

Redis Monitor Changes

  • Added plugin functionality for easier extension creation
  • Added both offline and online unit tests
  • Improved logging
  • Added Stats Collection

Crawler Changes

  • Upgraded Crawler to be compatible with Scrapy 1.0
  • Improved code structure for overriding url.encode in default LxmlParserLinkExtractor
  • Improved logging
  • Added ability for the crawling rate to be controlled in a manner that will rate limit the whole crawling cluster based upon the domain, spider type, and public ip address the crawlers have.
  • Added ability for the crawl rate to be explicitly defined per domain in Zookeeper, with the ability to dynamically update them on the fly
  • Created manual crawler Zookeeper configuration pusher
  • Updated offline and added online unit tests
  • Added response code stats collection
  • Added example Wandering Spider

Scrapy Cluster 1.0

Date: 5/21/2015

  • Initial Release