Google may be crawling sites more over the past several days. Several SEOs saying that there are seeing significant growth in crawl rates by GoogleBot.
We also checked in the old Google Search Console, to see the stats, not all, but most, have a significant spike in crawling.
Here is one of many screenshots from the crawl stats section within Google Search Console:
Image Source: SEORoundTable
Also, Read, Why Google Is Not Indexing Your Pages?
Check out some of the comments from WebmasterWorld:
Huge crawling on my site today, far more than usual. Does anyone experience this? There may be something on the way from big G.
I can confirm the big spike in crawling on my site today. Last spike this large was at Mid-July.
Have you noticed such large spikes in crawling? Do let us know in comments section.
Note: Google told crawl spikes do not mean algorithm updates are about to happen.