Add caching PersistenceManager proxy
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Key: FELIX-2552
URL: https://issues.apache.org/jira/browse/FELIX-2552
Project: Felix
Issue Type: Improvement
Components: Configuration Admin
Affects Versions: configadmin-1.2.4
Reporter: Felix Meschberger
Assignee: Felix Meschberger
Fix For: configadmin-1.2.8
Each call to the ConfigurationAdmin.listConfigurations method causes a call to
the PersistenceManager.getDictionaries() method. The current file-based
implementation of this interface scans the configuration location and loads
configuration files each time this method is called. Depending on the number of
stored configurations, this may sum up to a considerable amount of time,
In an inhouse implementation using Declarative Services (Apache Felix SCR
1.6.0) and Configuration Admin the use of ConfigurationAdmin.listConfigurations
by the Declarative Services implementation increases system startup time
considerably. With a simple caching layer ontop of the file-based
PersistenceManager service we were able to cut down ca. 10s of a total system
startup time of roughly 25s.
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