https://vrajat.com/tags/design/Recent content in Design on vrajatHugoenSun, 15 Mar 2026 12:00:00 +0530https://vrajat.com/posts/rust-associated-types/Sun, 15 Mar 2026 12:00:00 +0530https://vrajat.com/posts/rust-associated-types/<p><a href="https://github.com/vrajat/pgqrs">pgqrs</a> supports multiple databases including PostgreSQL and SQLite.</p> <p>An application uses <code>pgqrs</code> with a specific database that is chosen as a feature.</p> <pre tabindex="0"><code>[dependencies] # PostgreSQL only (default) pgqrs = &#34;0.15.2&#34; # SQLite only pgqrs = { version = &#34;0.15.1&#34;, default-features = false, features = [&#34;sqlite&#34;] } </code></pre><p>The choice of database determines:</p> <ul> <li>dialect</li> <li>client library</li> <li>specific functions such as handling timestamps.</li> </ul> <p>The important detail is that these differences are not chosen per method call. Once the backend is selected, the dialect and timestamp handling are fixed.</p>