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This guide will take you through building a simple CDAP application that ingests web logs, aggregates the request counts for different combinations of fields, and that can then be queried for the volume over a time period. You can then retrieve insights on the traffic of a web site and the web site’s health. You will:
Use a Stream to ingest real-time log data;
Build a Workflow to process log entries as they are received into multidimensional facts;
Use a Dataset to store the aggregated numbers; and
Build a Service to query the aggregated data across multiple dimensions.
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| Code Block |
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[
{
"measureName": "count",
"dimensionValues": {},
"timeValues": [
{
"timestamp": 1423375200,
"value": 3
},
{
"timestamp": 1423389600,
"value": 1
}
]
}
] |
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License
Copyright © 2015 Cask Data, Inc.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
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