tsm-odoo d97ff6820e [FIX] mail: fix slow follower insertion
Before this commit, follower insertion checked if a follower
was already in the thread's follower list by using
`Array.prototype.includes`. Since this method must run through
every item in the array to tell whether or not a follower is
present, it is extremly slow with large arrays (especially
since it is called for each follower).

This would slow down the tab for threads having lots of follower
(issue starts appering at 5k+ followers).

This PR solves the issue by replacing thread follower lists by
sets. With this change, inserting even 15k+ follower is almost
instantaneous since the membership test is done in O(1) instead
of O(n).

closes odoo/odoo#127833

X-original-commit: 406c91c8cba32e01eaa8df4b7fb9d0e3ad821e9c
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>
2023-07-07 23:48:43 +02:00
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Odoo

Odoo is a suite of web based open source business apps.

The main Odoo Apps include an Open Source CRM, Website Builder, eCommerce, Warehouse Management, Project Management, Billing & Accounting, Point of Sale, Human Resources, Marketing, Manufacturing, ...

Odoo Apps can be used as stand-alone applications, but they also integrate seamlessly so you get a full-featured Open Source ERP when you install several Apps.

Getting started with Odoo

For a standard installation please follow the Setup instructions from the documentation.

To learn the software, we recommend the Odoo eLearning, or Scale-up, the business game. Developers can start with the developer tutorials

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