Facing issue regarding deltafetch

[gopal1414]

Kinldy help me on below issue:

I tried to crawl the data using “DeltaFetch”, but facing below issue:

My DB file is getting updated both time when i am using below command to run the Crawler
“$ scrapy crawl quotes -a deltafetch_reset=1”
“$ scrapy crawl quotes -a deltafetch_reset=0”

My DB file is not getting updated when i am using below command:
“$ scrapy crawl quotes”

Below are the updation i have done in setting.py file:
SPIDER_MIDDLEWARES = {
‘scrapy.contrib.spidermiddleware.referer.RefererMiddleware’: True,
‘scrapy_deltafetch.DeltaFetch’: 100,
}

COOKIES_ENABLED = True
COOKIES_DEBUG = True
DELTAFETCH_ENABLED = True
DELTAFETCH_DIR = ‘/home/administrator/apps/scrapy-deltafetch/Crawling/Crawling/crawl_output’
DOTSCRAPY_ENABLED = True

please find my below code:

import scrapy
from selenium import webdriver
from w3lib.url import url_query_parameter

class QuotesSpider(scrapy.Spider):
name = “quotes_git”

def start_requests(self):
urls = [
‘https://www.wikipedia.org/’,
]
for url in urls:
yield scrapy.Request(url=url, meta={‘deltafetch_key’: url_query_parameter(url, ‘abc001’)}, callback=self.parse)
def parse(self, response):
print (‘testing’)
print(response.url)
self.driver = webdriver.Chrome(‘/home/administrator/Downloads/Gopal/Crawling/Crawling/spiders/chromedriver’)

self.driver.get(response.url)
print(‘check point1’)

title = self.driver.title
print (title)

filename = ‘sample_git.txt’
with open(filename, ‘wb’) as f:
f.write(response.url + title)
print (‘done’)