Hello, World — Setting Up This Blog

Raymond — Thu, 07 May 2026 00:00:00 +0000

This post exists to verify the full rendering pipeline: code blocks, math, diagrams, RSS, and search. If you’re reading this on the deployed site, everything works.</p>

fn</span> fibonacci</span>(</span>n</span>:</span> u32</span>)</span> -></span> u64</span> {</span></span>
    let</span> (</span>mut</span> a</span>,</span> mut</span> b</span>)</span> =</span> (</span>0</span>u64</span>,</span> 1</span>u64</span>);</span></span>
    for</span> _</span> in</span> 0</span>..</span>n</span> {</span></span>
        let</span> next</span> =</span> a</span> +</span> b</span>;</span></span>
        a</span> =</span> b</span>;</span></span>
        b</span> =</span> next</span>;</span></span>
    }</span></span>
    a</span></span>
}</span></span>
</span>
fn</span> main</span>() {</span></span>
    for</span> i</span> in</span> 0</span>..</span>10</span> {</span></span>
        println!</span>(</span>"fib(</span>{</span>i</span>}</span>) = </span>{}</span>"</span>,</span> fibonacci</span>(</span>i</span>));</span></span>
    }</span></span>
}</span></span></code></pre>
And the SQL I run more often than I’d like to admit:</p>
SELECT</span></span>
    table_schema,</span></span>
    table_name,</span></span>
    pg_size_pretty(pg_total_relation_size(quote_ident(table_schema) </span>||</span> '.'</span> ||</span> quote_ident(table_name))) </span>AS</span> total_size</span></span>
FROM</span> information_schema.tables</span></span>
WHERE</span> table_schema </span>NOT IN</span> (</span>'pg_catalog'</span>, </span>'information_schema'</span>)</span></span>
ORDER BY</span> pg_total_relation_size(quote_ident(table_schema) </span>||</span> '.'</span> ||</span> quote_ident(table_name)) </span>DESC</span></span>
LIMIT</span> 20</span>;</span></span></code></pre></span></a>
Math (KaTeX)</h2>
The mass-energy equivalence, inline: $E = mc^2$.</p>
A block equation — the Cauchy–Schwarz inequality:</p>
$$
\left( \sum_{i=1}^{n} a_i b_i \right)^2 \le \left( \sum_{i=1}^{n} a_i^2 \right) \left( \sum_{i=1}^{n} b_i^2 \right)
$$</p>
</span></a>
Diagram (Mermaid)</h2>
A typical CDC pipeline:</p>

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Hello, World — Setting Up This Blog