Wrong. SQLite can handle concurrent writes using a WAL. You do not have to wait any amount of time between writes. Once the write is done, it is done.

Incorrect. Here are some actual numbers: https://blog.wesleyac.com/posts/consider-sqlite

> Writing 512 byte blobs as separate transactions, in WAL mode with synchronous=normal3, temp_store=memory, and mmap enabled, I got 13.78μs per write, or ~72,568 writes per second.

Did you evaluate SQLite on a floppy drive or something?