What are cookies?
Cookies are simple text files that are stored on your computer or mobile device by a website’s server. Each cookie is unique to your web browser. It will contain some anonymous information such as a unique identifier, website’s domain name, and some digits and numbers.
What types of cookies do I use?
I use the two following cookies from Cloudflare:
_cflb cookie for Cloudflare Load Balancer session affinity
When enabling session affinity with Cloudflare Load Balancer, Cloudflare sets a _cflb cookie with a unique value on the first response to the requesting client. Cloudflare routes future requests to the same origin, optimizing network resource usage. In the event of a failover, Cloudflare sets a new _cflb cookie to direct future requests to the failover pool.
Privacy and the _cfduid cookie
The _cfduid cookie collects and anonymizes End User IP addresses using a one-way hash of certain values so they cannot be personally identified. The cookie is a session cookie that expires after 30 days.
The _cfduid cookie does not:
- allow for cross-site tracking,
- follow users from site to site by merging various _cfduid identifiers into a profile, or
- correspond to any user ID in a Customer’s web application.
Generally, Cloudflare keeps user-level data (including the IP address of a requester) for less than 24 hours for domains in the Free, Pro and Business plans, and up to seven (7) days for Enterprise domains that have enabled Cloudflare Logs (formerly Enterprise LogShare or ELS). There may be exceptions with IP addresses that have triggered security alerts. You can find more information about what Cloudflare logs in this blog post.
I set no other cookies, not for tracking, analytics or functionality.
How to delete cookies?
If you want to restrict or block the cookies that are set by our website, you can do so through your browser setting. Alternatively, you can visit www.internetcookies.org, which contains comprehensive information on how to do this on a wide variety of browsers and devices. You will find general information about cookies and details on how to delete cookies from your device.