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<h1>Prefetching IDs For New Objects</h1><div id="TOC"><div id="TOCinner"><span class="TOCtitle">Contents</span><div class="TOCcontents"><ul><li><a href ="#Advantage">Advantage</a></li><li><a href ="#Effect">Effect</a></li><li><a href ="#Alternate Strategies">Alternate Strategies</a></li></ul></li></ul></div></div></div>
<span name="cs_wiki_filter" csw_filters="net"><p>.NET: </p>
<p><code>void ClientServerConfiguration.PrefetchIDCount(int prefetchIDCount);</code></p>
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<p>Sets the number of IDs to be pre-allocated in
the database for new objects created on the client</p>
<a name="Advantage"></a><h2>Advantage</h2>
<p>Prefetching several IDs for the new objects
created on the client allows to improve the performance by reducing
client-server communication.</p>
<a name="Effect"></a><h2>Effect</h2>
<p>When a new object is
created on a client, the client should contact the server to get the next
available object ID. PrefetchIDCount allows to specify how many IDs
should be pre-allocated on the server and prefetched by the client. This method
helps to reduce client-server communication.</p>
<p>PrefetchIDCount can
be tuned to approximately match the usual amount of objects created in one
operation to improve the performance.</p>
<p>If PrefetchIDCount =1
a client will have to connect to the server for each new objects created</p>
<p>If PrefetchIDCount is
bigger than the amount of new objects to be created the database will keep
unnecessary preallocated space. </p>
<p>The default
PrefetchIDCount is 10.</p>
<a name="Alternate Strategies"></a><h2>Alternate Strategies</h2>
A possible alternative can be using
<a href="../../client-server/remote_code_execution/using_messaging_api_for_remote_code_execution.html" class="wikiLink">Messaging</a>
for bulk inserts on the server.
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This revision (3) was last Modified 2007-05-07T16:41:05 by Tetyana.
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