Model = Props = Cache - sgml/signature GitHub Wiki

Here's a brief overview of the caching policies for Nutch, Heritrix, and OpenSearchServer:

1. **Nutch**: Nutch does not have a specific caching policy built into its core functionality. However, it can be integrated with other caching solutions or frameworks to manage caching based on the specific needs of the deployment.

2. **Heritrix**: Heritrix does not have a built-in caching policy either. It focuses on web crawling and archiving, leaving caching policies to be managed by the systems that use Heritrix or by integrating with external caching solutions.

3. **OpenSearchServer**: OpenSearchServer has a more defined caching policy. It includes an **index request cache** designed to enhance search performance by storing the results of frequently executed search queries at the shard level. This cache is enabled by default and is particularly useful for read-heavy workloads. The cache is automatically invalidated at the configured refresh interval, ensuring that stale results are never returned. Users can configure the cache size and other parameters to optimize performance based on their specific needs.

Would you like more detailed information on configuring caching policies for any of these tools?

function sharedCache($cacheFactory)
   {
   var sharedCache = $cacheFactory.get('sharedCache') ? $cacheFactory.get('sharedCache') : $cacheFactory('sharedCache');

   return sharedCache;
   }

function bar(sharedCache)
   {
   var data = {
     firstName: 'John',
     lastName: 'Smith',
     pocket: 30
     };

   sharedCache.put('sharedCache', data);
   }

bar.$inject = ['sharedCache', '$scope'];
sharedCache.$inject = ['$cacheFactory'];

angular.module('foo',[]);
angular.module('foo').constant('sharedCache', sharedCache);
angular.module('foo').run(bar);

function bop(name)
  {
  var data = baz.data.get('sharedCache');
  var tmpl = '';

  try
     {
     tmpl = tmpl.concat('<h1>',data.firstName, '</h1>');
     baz.tmpl.put(name, tmpl);
     }
  catch(e)
     {
     console.log(e);
     }
  }

function baz($templateCache, sharedCache)
  {
  baz.tmpl = $templateCache;
  baz.data = sharedCache;
  return bop;
  }

baz.$inject=['$templateCache', 'sharedCache'];
angular.module('foo').filter('baz', baz);

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="foo">
  <div ng-include="'userContent' | baz"></div>
</div>