Benoit Tellier created JAMES-3713:
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Summary: DLP matcher: enable caching
Key: JAMES-3713
URL: https://issues.apache.org/jira/browse/JAMES-3713
Project: James Server
Issue Type: Improvement
Components: data, Mailet Contributions
Affects Versions: master
Reporter: Benoit Tellier
Querying DLP rules on top of Cassandra relies on Event sourcing, involves
reading a potentially large event stream and involves some SERIAL reads
(LightWeight transactions) for each processed emails. Conducting flame graphs
on Cassandra tend to show 20% of its activity consists of Paxos transactions
for LWTs and in my setup DLP accounts for ~10% of the LWTs.
DLP rules depending on the domain of the sender, the cardinaility is extremely
low.
Also, we can afford a window of inconsistencies in rules application (eg a
minute)
This makes caching very appealing...
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