I want to avoid crawling already-visited URLs.
I have downloaded the deltafetch.py script and I put next to the
settings.py script.
I added these codes to my settings.py
>
> SPIDER_MIDDLEWARES = {
> 'General_Spider_code_version_1.deltafetch.DeltaFetch': 100,
> }
> DELTAFETCH_ENABLED = True
> DOTSCRAPY_ENABLED = True
I run my spider the first time, and a .spider folder has been generated.
Then, I run the spider another time, but the spider crawls the
already-crawls URLs.
I know that because I write a json file for each item and each time I run
my spider, new json files for the already scraped-items are generated,
what am i doing wrong please?
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