sqlite doesn't have a native async interface, and instead will use traditional OS-level mutexes to ensure thread safety. Using those when under contention in a tokio scheduler thread can lead to blocking of the tokio scheduler threads, which can prevent timely delivery of data via websockets, or timely processing of incoming log records. This commit fixes up the sqlite access points to use tokio's spawn_blocking function to move that style of mutex acquisition to a more suitable context.
KumoMTA
KumoMTA is an open-source Message Transfer Agent (MTA) designed for high-performance outbound email functionality, similar to commercial enterprise MTAs such as Momentum, PowerMTA, and Halon.
The KumoMTA project was founded by a group of email industry veterans with decades of experience building and managing high-performance On-Prem MTAs and is supported by a community of some of the largest senders in the world.
Because it is designed for high-performance sending environments, KumoMTA is for experienced email operations professionals who are accustomed to high-performance sending environments and familiar with DevOps practices.
Learn more in our FAQ and at https://kumomta.com/.
Documentation
You can learn more about KumoMTA from the Documentation.
Community
Real-time discussion is available on Our Discord.
Developers
If you are interested in contributing/extending KumoMTA, take a look at DEVELOPERS.md. The #devel channel on Our Discord is for contributors to discuss KumoMTA development.
Reporting Bugs
See How to Report Bugs.
Getting Help
See How to Get Help. For paid support see https://kumomta.com/support.
Getting Updates
You can subscribe to updates at https://kumomta.com/subscribe, we send updates periodically and will never sell nor share your information.
Talk to Us
We're available to talk about the project, book us at https://cal.com/team/kumomta/talk-with-kumomta.