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Key-value store domain: kv.sslip.io → k-v.io

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I didn't want a really long domain for the key-value store; I wanted a
short, easy-to-remember domain. And it cost $400 for ten years.

Many good domains (e.g. keyvalue.store, kv.io)
were taken, and some weren't easily registered (e.g. the Albanian
domain, keyv.al).

Browsing these domains that were never put into use is like strolling
along the Boulevard of Broken Dreams: high hopes dashed against the hard
rocks of reality.
This commit is contained in:
Brian Cunnie
2021-12-29 19:56:52 -08:00
parent 3066a22f57
commit 5065229a03
4 changed files with 68 additions and 81 deletions
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@@ -227,45 +227,32 @@ dig @ns.sslip.io txt ip.sslip.io +short -6 # forces IPv6 lookup; sample reply "2
"https://icanhazip.com/">https://icanhazip.com/</a> requires 8692 bytes spread out over 34 packets—over 14 times
as much! Admittedly bandwidth usage is a bigger concern for the one hosting the service than the one using the
service.</p>
<h4 id="key-value-store"><code>kv.sslip.io</code>: (key-value) read/write/delete TXTs</h4>
<p>We enable special behavior under the <code>kv.sslip.io</code> subdomain: it can be treated as a key-value
store, the sub-subdomain being the key, and the TXT record being the value.</p>
<h4 id="key-value-store"><code>k-v.io</code>: (key-value) read/write/delete TXTs</h4>
<p>We enable special behavior under the <code>k-v.io</code> domain: it can be treated as a key-value store, the
subdomain being the key, and the TXT record being the value.</p>
<p>For example, to write ("put") the value "12.0.1" to the key "macos-version" on the
<code>ns-gce.sslip.io.</code> nameserver, you'd use the following <code>dig</code> command:</p>
<pre><code class="lang-shell">dig @ns-gce<span class="hljs-selector-class">.sslip</span><span class=
"hljs-selector-class">.io</span>. txt put.<span class="hljs-number">12.0</span>.<span class=
"hljs-number">1</span><span class="hljs-selector-class">.macos-version</span><span class=
"hljs-selector-class">.kv</span><span class="hljs-selector-class">.sslip</span><span class=
"hljs-selector-class">.io</span>.
</code></pre>
<pre><code class="lang-shell">dig @ns-gce.sslip.io. txt put.12.0.1.macos-version.k-v.io</code>.
</pre>
<p>To read ("get") the value back, you'd write the following <code>dig</code> command:</p>
<pre><code class="lang-shell">dig @ns-gce<span class="hljs-selector-class">.sslip</span><span class=
"hljs-selector-class">.io</span>. txt get<span class="hljs-selector-class">.macos-version</span><span class=
"hljs-selector-class">.kv</span><span class="hljs-selector-class">.sslip</span><span class=
"hljs-selector-class">.io</span>.
</code></pre>
<pre><code class="lang-shell">dig @ns-gce.sslip.io. txt get.macos-version.k-v.io.</code>
</pre>
<p>Since "get" is the default behavior, you don't need to include it in the domain name:</p>
<pre><code class="lang-shell">dig @ns-gce<span class="hljs-selector-class">.sslip</span><span class=
"hljs-selector-class">.io</span>. txt macos-version<span class="hljs-selector-class">.kv</span><span class=
"hljs-selector-class">.sslip</span><span class="hljs-selector-class">.io</span>.
</code></pre>
<pre><code class="lang-shell">dig @ns-gce.sslip.io. txt macos-version.k-v.io.</code>
</pre>
<p>Finally, when you're done with the key-value, you can "delete" it:</p>
<pre><code class="lang-shell">dig @ns-gce<span class="hljs-selector-class">.sslip</span><span class=
"hljs-selector-class">.io</span>. txt delete<span class="hljs-selector-class">.macos-version</span><span class=
"hljs-selector-class">.kv</span><span class="hljs-selector-class">.sslip</span><span class=
"hljs-selector-class">.io</span>.
<pre><code class="lang-shell">dig @ns-gce.sslip.io. txt delete.macos-version.k-v.io.
</code></pre>
<p>Notes:</p>
<p><code class="lang-shell">Notes:</code></p>
<ul>
<li>Keys are case-insensitive (to accommodate DNS convention). In other words, <code>KEY.kv.sslip.io</code> and
<code>key.kv.sslip.io</code> return the same TXT record.</li>
<li>Values are case-sensitive. <code>put.CamelCase.style.kv.sslip.io</code> sets the TXT record to
"CamelCase".</li>
<li><code>put</code> requests will return the TXT record being put; i.e.
<code>put.hello.world.kv.sslip.io</code> returns one TXT record of one string, <code>hello</code>.</li>
<li>Keys are case-insensitive (to accommodate DNS convention). In other words,
<code>KEY.k-v.io</code> and <code>key.k-v.io</code> return the same TXT record.</code></li>
<li>Values are case-sensitive. <code>put.CamelCase.style.k-v.io</code> sets the TXT record to "CamelCase".</li>
<li><code>put</code> requests will return the TXT record being put; i.e. <code>put.hello.world.k-v.io</code>
returns one TXT record of one string, <code>hello</code>.</li>
<li><code>delete</code> requests will return the TXT record being deleted; i.e.
<code>delete.world.kv.sslip.io</code> returns one TXT record of one string, <code>hello</code>. If the TXT
record does not exist, no TXT records will be returned.</li>
<code>delete.world.k-v.io</code> returns one TXT record of one string, <code>hello</code>. If the TXT record
does not exist, no TXT records will be returned.</li>
<li>Values are limited to 63 bytes to mitigate using the sslip.io servers in a <a href=
"https://us-cert.cisa.gov/ncas/alerts/TA13-088A">DNS amplification attack</a>.
</li>