chibenwa opened a new pull request, #993:
URL: https://github.com/apache/james-project/pull/993
## Motivation
IMAP SEARCH command is used by some clients to resynchronize data and are
often performed queries.
The use of ElasticSearch pose several issues:
- Long lasting queries: it's not uncommon to see some search hanged for
60+ seconds
- Many results returned kicking in ES driver paging
- ElasticSearch is not the primary data store and can get out of date,
reindexed. Indexing is a background process. Acceptable for user search, not
really for resynchronisation.
The scope of this ticket is to allow execution of well chosen search
requests against existing Cassandra datastructures. Optional and extensible.
## TODO
- [ ] Unit tests for search overrides
- [ ] Documentation
- [ ] Unit test for search override loading
- [ ] Gatling tests for performance results
- [ ] JIRA ticket and ADR
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