[regext] Éric Vyncke's No Objection on draft-ietf-regext-rdap-sorting-and-paging-16: (with COMMENT)

[Éric Vyncke via Datatracker <[e-mail]>]

Éric Vyncke has entered the following ballot position for
draft-ietf-regext-rdap-sorting-and-paging-16: No Objection

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COMMENT:
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Thank you for the work put into this document.

Please find below a couple of non-blocking COMMENT points (but, to be honest, I
was close to put a DISCUSS about server performance impact that is not fully
addressed in the security section).

I hope that this helps to improve the document,

Regards,

-éric

== COMMENTS ==

-- Section 2.1 --
I find the wording a little confusing in ""totalCount": "Numeric" (OPTIONAL)
...  It MUST be provided if and only if ...". While I understand the meaning,
would another wording avoid the conflicting "OPTIONAL" <-> "MUST" ? I.e., the
"OPTIONAL" could possibly be removed.

-- Section 2.2 --
I am concerned that a server having to compute "totalCount" (even if only to
return the first 10 entries) may spend a lot of time computing this number in
the absence of index... The security section does not offer a definitive answer
to this issue IMHO. E.g., I would prefer to allow the server to refuse to serve
"totalCount" until the last page (and even).

-- Section 2.3 --
Is there a reason why RFC 5952 was not used to represent the IPv6 address ?

I am concerned that a server having to sort on client-side selection of
properties may have a huge performance impact in the absence of relevant DB
indexes.The security section does not offer a definitive answer to this issue
IMHO.

-- Section 2.3.1 --
Is there a reason for this unusual writing of 'ipV4' (uppercase V) ?

-- Section 2.4 --
Suggestion: mention that the cursor value is opaque for the client ?

== NITS ==

-- Section 2.2 --
Is a 'figure' element really required for a single line example ?

Should the URI be
"https://example.com/rdap/domains?name=*example.com&count=true" (also
applicable to section 2.3)