Option to periodically flush collected data from memory to the disk if needed.

[rtarasov-mg]

This option could be helpful in cases when service might be killed with oom or unexpected reboot server, etc. To prevent losing all of the data collected in memory and guarantee delivery after recovery service.
Useful new options:

1. Enable flush to disk
2. How often
3. Retention policy
   Could this feature be implemented?

[saikrishnakethan]

Is this similar to Asynchronous Inserts ? https://clickhouse.com/docs/en/optimize/asynchronous-inserts

[nikepan]

Is this similar to Asynchronous Inserts ? https://clickhouse.com/docs/en/optimize/asynchronous-inserts

yes, it is almost same