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copied!<h1>Summary</h1> <ul> <li><strong>12-14</strong> : Date of the request. <strong>12</strong> is the month (December), <strong>14</strong> is the day of the month (Tuesday).</li> <li><strong>05:21AM</strong> : Time of the request, <a href="http://code.google.com/p/googleappengine/issues/detail?id=1102#c4" rel="noreferrer">PST</a> offset. <strong>05</strong> is the hour. <strong>21</strong> is the minute.</li> <li><strong>57.593</strong> : Time of request, <a href="http://code.google.com/p/googleappengine/issues/detail?id=1102#c4" rel="noreferrer">PST</a> offset. <strong>57</strong> is the second. <strong>593</strong> is the millisecond.</li> <li><strong>/match/...</strong> : HTTP request path</li> <li><strong>200</strong> : HTTP return code. (200 = OK)</li> <li><strong>343ms</strong> : The total time (in milliseconds) it took to calculate and return the response to the user</li> <li><strong>123cpu_ms</strong> : The time (in milliseconds) the request spend on CPU calculation</li> <li><strong>30api_cpu_ms</strong> : The time (in milliseconds) the request spend on API calls (Datastore get and co...)</li> <li><strong>1kb</strong> : The size (in kilobytes) of the response that was sent to the user</li> <li><strong>Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7,gzip(gfe)</strong> : <a href="http://en.wikipedia.org/wiki/User_agent" rel="noreferrer">User Agent</a> note that gzip(gfe) is added by AppEngine front end.</li> </ul> <h1>Details</h1> <ul> <li><strong>IP</strong> <code>yellow masked out</code> : The IP address of the client initiating the request</li> <li><strong>HTTP Referrer</strong> : Note that it's empty on this request because it's a direct hit</li> <li><strong>[14/Dec/2010:05:21:57 -0800]</strong> : Date, including timestamp offset specification.</li> <li><strong>"GET /match/... HTTP/1.1"</strong> : The HTTP GET URI.</li> <li><strong>200</strong> : HTTP return code. (200 = OK)</li> <li><strong>1036</strong> : The size (in bytes) of the response that was sent to the user</li> <li><strong>Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7,gzip(gfe)</strong> : <a href="http://en.wikipedia.org/wiki/User_agent" rel="noreferrer">User Agent</a> note that gzip(gfe) is added by AppEngine front end.</li> <li><strong>ms=344</strong> : The total time (in milliseconds) it took to calculate and return the response to the user</li> <li><strong>cpu_ms=123</strong> : The time (in milliseconds) the request spend on CPU calculation</li> <li><strong>api_cpu_ms=30</strong> : The time (in milliseconds) the request spend on API calls (Datastore get and co...)</li> <li><strong>cpm_usd=0.003648</strong> : The amount (in us $) that 1000 requests such as this one would cost. <a href="http://code.google.com/appengine/docs/java/runtime.html#Responses" rel="noreferrer">ref</a></li> </ul> <h2>log record</h2> <ul> <li><strong>12-14</strong> : Date of this specific application emitted log entry. <strong>12</strong> is the month (December), <strong>14</strong> is the day of the month (Tuesday).</li> <li><strong>05:21AM</strong> : Time of this specific application emitted log entry, <a href="http://code.google.com/p/googleappengine/issues/detail?id=1102#c4" rel="noreferrer">PST</a> offset.</li> <li><strong>57.833</strong> : Time of request, <a href="http://code.google.com/p/googleappengine/issues/detail?id=1102#c4" rel="noreferrer">PST</a> offset. <strong>57</strong> is the second. <strong>833</strong> is the millisecond.</li> <li><strong>[...-prod/0-0-39.346862139187007139]</strong> : The identifier of current version of the application that emitted this log message. Note: <strong>...-prod</strong> is the application name. <strong>0-0-39</strong> is the deployed version name (app.yaml). <strong>.346862139187007139</strong> is the time? (in what format?) when this version was deployed to appengine cloud. </li> <li><strong>stdout</strong> : The channel to which the application emitted this log message. Can be either stdout or stderr.</li> <li><strong>INFO ....Matcher - ... Id 208 matched.</strong> : Application level output. Can be done via either System.out.print or (as in this case) using a logging framework, <a href="http://logback.qos.ch/" rel="noreferrer">logback</a></li> </ul>

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