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https://issues.apache.org/jira/browse/JAMES-4177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18061221#comment-18061221
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Benoit Tellier commented on JAMES-4177:
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Yes sorry
> Finner grain Cassandra profiles
> -------------------------------
>
> Key: JAMES-4177
> URL: https://issues.apache.org/jira/browse/JAMES-4177
> Project: James Server
> Issue Type: Improvement
> Reporter: Benoit Tellier
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> h3. Why ?
> As a Cassandra operator I want more control on the consistency levels
> EG:
> - I want globally to write at QUORUM but for my reads I do want to operate
> at LOCAL_ONE
> The idea: we offer a way for the operator to trade small window of
> inconsistency for more performance without compromising correctness (Not
> loosing non replicated writes).
> Also I want to be able to do this on a per collection matter - eg reading
> domains at LOCAL_ONE is trivially ok, so I'd want to be able to squeeze the
> extra perf out of it.
> h3. How?
> In cassandra-diver.conf define the read + write profiles defaulting to QUORUM
> Each DAO would propose 2 extra profiles, read-name-of-the-dto and
> write-name-of-the-dto, and if undefined in the conf fallback to read / write
> profile. Done in the DAO constructor:
> {code:java}
> public String resolveProfile(CqlSession session, String profileName, String
> fallback) {
> Map<String, DriverExecutionProfile> profiles =
> session.getContext()
> .getConfig()
> .getProfiles();
> return profiles.containsKey(profileName) ? profileName : fallback;
> }
> {code}
> We would supply in the conf a full list of supported profiles.
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