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Operations Basics / Version 2207

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4.10.5.1.2 Other Caches

On some CoreMedia applications, other caches are employed in addition to the CoreMedia cache.

For example, you can request the current cache size for cache richtext on a Headless Server with

http://localhost:8081/actuator/metrics/cache.size?tag=name:richtext

The response will then provide the value for the cache size:

{
  "name": "cache.size",
  "description": "The number of entries in this cache. This may be an approximation, depending on the type of cache.",
  "baseUnit": null,
  "measurements": [{
      "statistic": "VALUE",
      "value": 91.0
  }],
  "availableTags": [
    {
      "tag": "name",
      "values": [
        "richtext"
      ]
    },
    {
      "tag": "cacheManager",
      "values": [
        "cacheManager"
      ]
    }
  ]
}

Depending on the application, different cache names are available. The list of all caches, if any are present, can be retrieved with a call to

http://localhost:8081/actuator/metrics/cache.size

If no other caches are present for the CoreMedia application, the request will return code 404.

The following table lists available metrics for other caches which are present on some CoreMedia applications. Some metrics support additional tags to further drill down into measurements.

Meter NameTagsDescription

cache.size

 

The number of entries in this cache.

cache.gets

result:hit

The number of cache hits, which are cache lookups that returned a cached value.

cache.gets

result:miss

The number of cache misses, which are cache lookups that had to evaluate a value.

cache.puts

 

The number of values inserted into the cache, after successful evaluation or injection.

cache.evictions

 

The number of values evicted from the cache.

Table 4.12. Other Cache Metrics


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