[SNMP4J] SNMP4J-Agent-DB Beta now available

[Frank Fock]

Hi,

There is a new API available for the SNMP agent development with Java:

SNMP4J-Agent-DB 

This API is licensed under the Apache 2 license (like SNMP4J and SNMP4J-Agent) and extends the SNMP4J-Agent API by a persistence provider. 
This provider is able to store MIB data per random access. It uses the Xodus non-relational database from JetBrains. 

SNMP4J-Agent-DB uses the new interface RandomAccessManagedObject of SNMP4J-Agent 3.0 to be able to serialise the MIB data of those ManagedObjects. MOScalar and DefaultMOTable now implement this new interface. 

The advantages in short are:

* Only changed objects are written again to disk. The default DefaultMOPersistenceProvider needs to save all objects in a sequence.
* DB size is smaller - if changes are limited to approximately less than 40% of the MIB objects during runtime.
* Agent shutdown is much faster because no objects need to be saved anymore.
* No unwanted data loss if agent is killed.

Disadvantages are:
* Additional dependency to Xodus
* Increased overall code size (approximately +3.2MB)

You can checkout the new API from here:
https://oosnmp.net/dist/snapshot/org/snmp4j/snmp4j-agent-db/3.0-SNAPSHOT/ <https://oosnmp.net/dist/snapshot/org/snmp4j/snmp4j-agent-db/3.0-SNAPSHOT/>

Best regards,
Frank Fock