Hi,
The limitation on keeping the separate RDF Delta project going is
maintainability. The setup with zookeeper is complicated and all too
easy to misconfigure.
It takes time&resources for testing configurations and responding to
issues with the separate Zookeeper layer and difference choices for the
patch storage. I don't have access to the resources necessary.
What has made it time to decide is that AWS are declaring end-of-life
for version 1 of their Java library to work with S3.
What will remain for some time will be the file-server backed
functionality variant. There is a branch with that on already. This
simpler setup is supportable. (If the file patch server isn't available,
the Fuseki servers are still operate for read operations so it is not
24x7 for updates. File patch server restart is fast.)
Long term, a V2 architecture would aim to make operating a cluster
easier by using RAFT (Apache Ratis) and distribute the patches via
Apache Kafka or Apache Pulsar.
Andy
On 21/08/2025 12:16, Gaspar Bartalus wrote:
Hello,
We were looking into the possibility of having multiple jena-fuseki
instances with data replication.
We've found https://afs.github.io/rdf-delta/ as a potential solution, but
we also saw that the project has been discontinued.
Is there an alternative solution available?
Thanks in advance,
Gaspar
