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<h2 class="title" style="clear: both"><a id="am_sync"></a>Flushing the database cache</h2>
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<p>The <a href="../api_reference/C/dbsync.html" class="olink">DB->sync()</a> method flushes all modified records from the database
cache to disk.</p>
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<strong>It is important to understand that flushing cached information
to disk only minimizes the window of opportunity for corrupted data, it
does not eliminate the possibility.</strong>
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<p>While unlikely, it is possible for database corruption to happen if a
system or application crash occurs while writing data to the database. To
ensure that database corruption never occurs, applications must either:</p>
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<li>Use transactions and logging with automatic recovery.</li>
<li>Use logging and application-specific recovery.</li>
<li>Edit a copy of the database, and, once all applications
using the database have successfully called <a href="../api_reference/C/dbclose.html" class="olink">DB->close()</a>, use
system operations (for example, the POSIX rename system call) to
atomically replace the original database with the updated copy.</li>
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