Hi, in the backend side (or even frontend), we often use a unique identifier to identify a request in logs / tracing.

There are various method to generate such request/tracing id:

• Some uses UUID (but I personally find them too long and often for my eyes to catch the difference)
• Some uses timestamp with random 4 bytes attach to the end.
• Some just generate a random string of set size.

So,

How do you generate your request id?

Do you think that you should be able to gain information (like time stamp, request method, geo fence, server identifier) from the request id? (for example, cloudflare's cf-ray identification header have its server location attached (546e3d6bfd3xxxxx-LAX))

Should it be base64 or regular string or integers?