January 2019
Beginner
132 pages
3h 14m
English
Content preview from Go Web Scraping Quick Start Guide
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Etag
The Etag is also important in keeping cached information. This is a key unique to this page, and will only change if the content of the page changes. After the cache expires, you can use this tag to check with the server if there is actually new content, without downloading a fresh copy. This works by sending an If-None-Match header containing the Etag value. When this happens, the server will check if the Etag on the current resource matches the Etag in the If-None-Match header. If it does match, then there have been no updates and the server responds with a status code of 304 Not Modified, with some headers to extend your cache. The following is an example of a 304 response:
HTTP/1.1 304 Not ModifiedAccept-Ranges: bytesCache-Control: ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.