hungphan227 commented on code in PR #1857: URL: https://github.com/apache/james-project/pull/1857#discussion_r1429567122
########## src/adr/0071-postgresql-mailbox-tables-structure.md: ########## @@ -0,0 +1,44 @@ +# 71. Postgresql Mailbox tables structure + +Date: 2023-12-14 + +## Status + +Implemented + +## Context + +Apache James was integrated with Postgresql database. The table structure for mailbox was created to store mailbox data in Postgresql database. + +## Decision + + + +Indexes in table message_mailbox: +- message_mailbox_message_id_index (message_id) +- mailbox_id_mail_uid_index (mailbox_id, message_uid) +- mailbox_id_is_seen_mail_uid_index (mailbox_id, is_seen, message_uid) +- mailbox_id_is_recent_mail_uid_index (mailbox_id, is_recent, message_uid) +- mailbox_id_is_delete_mail_uid_index (mailbox_id, is_deleted, message_uid) + +Indexes are used to find records faster + +For some fields, hstore data type are used. Hstore is key-value hashmap data structure. It is useful in some cases. For example, the database needs to store a list of usernames and corresponding rights for a mailbox. By applying hstore, acl that belongs to a specific mailbox and username could be retrieved quickly. Review Comment: fixed -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
