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<h1><a href="/docs">Documentation</a> / <a href="/docs/setup">Setup</a> / Logging </h1>
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<p>Ebean uses <a href="http://www.slf4j.org/">SLF4J</a> for logging.</p>
<h2 id="sql">SQL and Transaction logging</h2>
<p>
During development it is expected that you include logging of
<code>io.ebean.SQL</code> and <code>io.ebean.TXN</code>.
These log the sql statements executed, bind values for statement execution
and transaction demarcation.
</p>
<div class="syntax xml"><div class="highlight"><pre><span></span><span class="c"><!-- LOGBACK configuration --></span>
<span class="c"><!-- SQL and bind values --></span>
<span class="nt"><logger</span> <span class="na">name=</span><span class="s">"io.ebean.SQL"</span> <span class="na">level=</span><span class="s">"TRACE"</span><span class="nt">/></span>
<span class="c"><!-- Transaction Commit and Rollback events --></span>
<span class="nt"><logger</span> <span class="na">name=</span><span class="s">"io.ebean.TXN"</span> <span class="na">level=</span><span class="s">"TRACE"</span><span class="nt">/></span>
</pre></div>
</div>
<h2 id="summary">Summary logging</h2>
<p>
The summary logging of <code>io.ebean.SUM</code> is useful for showing lazy loading queries and how they relate
back to origin queries. This is useful when looking at more complex object graphs are
built. In tuning queries for N+1 etc.
</p>
<div class="syntax xml"><div class="highlight"><pre><span></span><span class="c"><!-- LOGBACK configuration --></span>
<span class="c"><!-- Summary level details --></span>
<span class="nt"><logger</span> <span class="na">name=</span><span class="s">"io.ebean.SUM"</span> <span class="na">level=</span><span class="s">"TRACE"</span><span class="nt">/></span>
</pre></div>
</div>
<h2 id="l2cache">L2 Cache logging</h2>
<p>The L2 cache events can be logged using the logger entries below.
This is useful when you are starting out using the L2 cache and looking
at the behaviour with L2 caching.
</p>
<div class="syntax xml"><div class="highlight"><pre><span></span><span class="c"><!-- LOGBACK configuration --></span>
<span class="c"><!-- L2 logging --></span>
<span class="nt"><logger</span> <span class="na">name=</span><span class="s">"io.ebean.cache.QUERY"</span> <span class="na">level=</span><span class="s">"TRACE"</span><span class="nt">/></span>
<span class="nt"><logger</span> <span class="na">name=</span><span class="s">"io.ebean.cache.BEAN"</span> <span class="na">level=</span><span class="s">"TRACE"</span><span class="nt">/></span>
<span class="nt"><logger</span> <span class="na">name=</span><span class="s">"io.ebean.cache.COLL"</span> <span class="na">level=</span><span class="s">"TRACE"</span><span class="nt">/></span>
<span class="nt"><logger</span> <span class="na">name=</span><span class="s">"io.ebean.cache.NATKEY"</span> <span class="na">level=</span><span class="s">"TRACE"</span><span class="nt">/></span>
</pre></div>
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