Description:
A Controller Service that starts an embedded server and listens for connections from clients. The
server provides the ability to query the cache, add data to the cache, and remove data from the cache.
Properties:
In the list below, the names of required properties appear
in bold. Any other properties (not in bold) are considered optional.
If a property has a default value, it is indicated. If a property
supports the use of the NiFi Expression Language (or simply,
"expression language"), that is also indicated.
- Port
- The port to listen on for incoming connections
- Default value: 4557
- Supports expression language: false
- SSL Context Service
- If specified, this service will be used to create an SSL Context that will be used to secure communications; if not specified, communications will not be secure
- Default value: no default
- Supports expression language: false
- Maximum Cache Entries
- The maximum number of cache entries that the cache can hold
- Default value: 10,000
- Supports expression language: false
- Eviction Strategy
- Determines which strategy should be used to evict values from the cache to make room for new entries. Valid values:
Least Frequently Used
, Least Recently Used
, and First In, First Out
- Default value: Least Frequently Used
- Supports expression language: false
- Persistence Directory
- If specified, the cache will be persisted in the given directory; if not specified, the cache will be in-memory only
- Default value: no default (in-memory)
- Supports expression language: true - JVM and System Properties Only
See Also: