https://sow.pgsty.com/tags/performance/ Recent content in performance on SOW Hugo en Sat, 17 Oct 2026 00:00:00 +0000 https://sow.pgsty.com/blog/release/sow-v0.6.0/ Sat, 17 Oct 2026 00:00:00 +0800 https://sow.pgsty.com/blog/release/sow-v0.6.0/ <p>SOW 0.6.0 improves repository updates, file verification, and recovery after an interruption. It keeps the current command set, configuration format, and public repository layout. A Managed workspace already on 0.5.0 needs no database migration.</p> <p>This note covers the changes since 0.5.0. Use the <a href="https://sow.pgsty.com/docs/start/install/">installation guide</a> for upgrade steps and the <a href="https://sow.pgsty.com/download/">download page</a> for release availability.</p> <h2 id="changes-for-repository-operators">Changes for repository operators </h2> <div class="td-table-scroll td-table-scroll--static"> <table> <thead> <tr> <th scope="col">Area</th> <th scope="col">Change in 0.6.0</th> <th scope="col">Effect on your workflow</th> </tr> </thead> <tbody> <tr> <td>Plain RPM updates</td> <td>Keep current and immediately previous checksum-named metadata</td> <td>Clients can finish fetching metadata referenced by the previous index</td> </tr> <tr> <td>Managed builds</td> <td>Record one publication time for metadata and signatures</td> <td>Recovery preserves the original time; unchanged builds keep their existing output</td> </tr> <tr> <td>File verification</td> <td>Check file identity throughout authenticated reads</td> <td>Replaced or rewritten files are detected, including rewrites that restore the modification time</td> </tr> <tr> <td>Signing keys</td> <td>Read complete OpenPGP key bundles</td> <td>All supplied trusted keys are considered; malformed input is rejected</td> </tr> <tr> <td>State and recovery</td> <td>Preserve locks, consistent reads, and committed results</td> <td>Maintenance errors do not make completed changes appear to have rolled back</td> </tr> <tr> <td>Large repositories</td> <td>Reuse verified data and limit parallel work</td> <td>Builds, imports, checks, and publication avoid repeated work</td> </tr> </tbody> </table> </div> <h2 id="plain-rpm-updates-keep-the-previous-indexes">Plain RPM updates keep the previous indexes </h2> <p>A client first downloads <code>repomd.xml</code>, then requests the metadata files named inside it. An update between those requests could previously remove the old metadata files before the client fetched them.</p>